Update to 5.9.0

Button-functions.md

@@ -15,6 +15,7 @@ In many cases, the long press duplicates the `F+` action, but some buttons have
 * `F+` means: press `F #`, then press the target button
 * navigation labels may be `UP` / `DOWN` or `LEFT` / `RIGHT`, depending on the model and `SetNav`
 * the programmable shortcuts are listed in [Custom button functions](#custom-button-functions)
+* in Fusion `v5.9.0`, pressing `F` and then **holding** a side button opens the [side-key action picker](#side-key-action-picker)
 
 ## Front keypad
 
@@ -99,13 +100,32 @@ The keypad lock always disables the front keypad, except that long-pressing `F #
 ### `Side button 1️⃣`
 * short press - user programmable in the menu: `F1Shrt`
 * long press - user programmable in the menu: `F1Long`
-* `F+` - increases the Step value in VFO mode
+* `F` then short press - increases the Step value in VFO mode
+* `F` then hold - opens the side-key action picker in Fusion `v5.9.0`
 
 ### `Side button 2️⃣`
 * short press - user programmable in the menu: `F2Shrt`
 * long press - user programmable in the menu: `F2Long`
 * this button can also be used to send the `1750 Hz` tone by holding it together with the `PTT` button
-* `F+` - decreases the Step value in VFO mode
+* `F` then short press - decreases the Step value in VFO mode
+* `F` then hold - opens the side-key action picker in Fusion `v5.9.0`
+
+### Side-key action picker
+
+The action picker runs an available shortcut without changing the functions saved in `F1Shrt`, `F1Long`, `F2Shrt`, or `F2Long`.
+
+From the normal radio screen:
+
+1. Short-press `F` so the `F` indicator appears.
+1. Hold side button 1️⃣ or side button 2️⃣ until the picker opens.
+1. Use `UP` / `DOWN` to highlight an action.
+1. Press `M` to run it immediately.
+
+The screen shows the previous, selected, and next action. `EXIT` or `F` cancels without running anything. Pressing `PTT` closes the picker and continues with normal PTT handling, so it does not block an urgent transmission.
+
+The picker also closes automatically after approximately five seconds, when reception begins, if the keypad becomes locked, or when another screen takes over. Each side button remembers its last highlighted picker action for the current session; the selections reset when the radio restarts.
+
+The picker lists the same compiled actions documented below, except `NONE`. Normal action restrictions still apply: an action that is unavailable in the current radio state is refused with the usual error beep.
 
 ## External microphone
 ### `PTT`
@@ -170,14 +190,16 @@ Assign `FOX HUNT / BEACON` to one of the customizable shortcuts (`F1Shrt`, `F1Lo
 
 In Fox Hunt mode:
 
-* `UP` / `DOWN` changes the receiver attenuation
-* `1` cycles between silent, Geiger-style beep, and received-station audio
-* `2` toggles between the S-meter staircase and recent signal-history graph
-* `M` resets the peak and signal-trend reference
+* `1` toggles between the S-meter staircase and recent signal-history graph
+* `2` cycles between silent, Geiger-style beep, and received-station audio
+* `3` cycles through `ATT 0`, `ATT 6`, `ATT 15`, `ATT 27`, `BYP`, and `BYP+`
+* `UP` / `DOWN` changes the receiver attenuation directly
+* `M` resets the peak, minimum, and signal-trend references
+* holding `F` for approximately 0.5 seconds locks or unlocks the Fox Hunt / Beacon controls; attenuation arrows remain available while Fox Hunt is locked
 * either side button switches to Beacon
 * `EXIT` leaves the feature
 
-In Beacon mode, `UP` / `DOWN` changes the silent interval between Morse identifications. Either side button returns to Fox Hunt, while `EXIT` leaves the feature. Switching to Beacon starts the first transmission immediately.
+In Beacon mode, keys `1`, `2`, and `3` adjust the TX window, silent interval, and fox identifier. Either side button returns to Fox Hunt, while `EXIT` leaves the feature. Switching to Beacon starts the first transmission immediately. The same long `F` gesture locks or unlocks all Beacon controls, including during an active transmission.
 
 See [Fox Hunt and Beacon](./Fox-Hunt-and-Beacon) for the screen readings, Beacon identification, transmit protections, saved settings, and safety information.
 

FM-broadcast-radio-receiver.md

@@ -5,10 +5,10 @@
 
 The radio can receive broadcast FM from `76` to `108 MHz`. It uses a separate chip (`BK1080`) for this. RDS is not supported.
 
-_During broadcast reception the active VFO still has priority. This means that any reception on the active VFO will temporarily disable broadcast reception and the radio switches to VFO reception. At the end of VFO reception the radio switches back to broadcast._
+_During normal broadcast listening, the active VFO still has priority. Reception on the active VFO temporarily disables broadcast audio; at the end of VFO reception, the radio switches back to broadcast. While a manual or automatic FM station scan is actively running, `v5.9.0` temporarily ignores main-channel reception so the station scan can finish without being interrupted._
 
 > [!NOTE]
-> - the active VFO always has priority over broadcast FM
+> - the active VFO has priority during normal broadcast listening, but not during an active FM station scan
 > - auto scan overwrites all `48` FM memories
 
 ![FM](https://github.com/user-attachments/assets/5737c8e4-802d-44e1-a540-da28707eabaa)
@@ -57,10 +57,14 @@ In MR mode, pressing `M` allows you to delete that memory channel.
 Start with `F` + `* Scan` or by long-pressing `* Scan`.
 The radio scans for stations and stores the first `48` stations in memory. Scanning starts at the low side of the band. Starting auto scan deletes previously stored channels. `EXIT` ends auto scan.
 
+While auto scan is running, an incoming signal detected on the main transceiver channel does not interrupt the FM scan. Normal main-channel priority is restored as soon as FM scanning stops.
+
 ### Manual scan
 
 A short press on `* Scan` starts manual scan. The radio scans upward from the current frequency until a station is received. You can continue scanning in either direction using the arrow keys. `EXIT` stops scan mode.
 
+The same temporary main-channel exception applies during manual scan. Once the scan stops on a station or is cancelled, ordinary broadcast listening again yields to reception on the active VFO.
+
 ## Button functions
 
 * `1 BAND` - long press, switch FM broadcast ranges

Fox-Hunt-and-Beacon.md

@@ -8,7 +8,7 @@
 * **Fox Hunt** is a receive-only signal-strength aid used to home in on a hidden transmitter.
 * **Beacon** turns the radio *into* the hidden transmitter and repeats a Morse identifier on a timed cycle.
 
-The feature opens in Fox Hunt mode. Press either side button while the feature is open to switch between Fox Hunt and Beacon.
+The feature opens in Fox Hunt mode. Press either side button while the controls are unlocked to switch between Fox Hunt and Beacon.
 
 > [!WARNING]
 > Beacon starts transmitting immediately when it is selected. Before entering Beacon mode, verify the active TX frequency, power, antenna, `F Lock`, `TXLock`, identification requirements, and the regulations applicable in your country. Do not leave an unattended beacon transmitting where autonomous or periodic transmissions are prohibited.
@@ -60,15 +60,19 @@ The trend arrow and signed `dBm` difference compare the current level with the l
 
 ### Fox Hunt controls
 
-Every setting has its own key — there are no navigation arrows to remember, and each press cycles to the next value, wrapping back to the start at the end. To go the other way, press `F` first: an `F` appears in the status bar (as on the main screens) and the next number key steps that setting **backwards** through its cycle instead. The reverse arm lasts for one key press; any other key cancels it. This is the same `F` + number scheme used in Beacon.
+Every setting has its own number key, and each press cycles to the next value, wrapping back to the start at the end. To go the other way, short-press `F` first: an `F` appears in the status bar and the next number key steps that setting **backwards** through its cycle instead. The reverse arm lasts for one key press; any other key cancels it. This is the same `F` + number scheme used in Beacon.
+
+`UP` and `DOWN` provide direct attenuation control without first selecting setting `3`.
 
 | Control | Action |
 | --- | --- |
 | `1` | Toggle between the S-meter staircase and the signal-history graph |
 | `2` | Cycle audio: silent → Geiger-style beeps → received station audio → silent |
-| `3` | Cycle the receiver attenuation: `0` → `6` → `15` → `27 dB`, then back to `0` |
+| `3` | Cycle receiver gain: `ATT 0` → `ATT 6` → `ATT 15` → `ATT 27` → `BYP` → `BYP+` → `ATT 0` |
+| `UP` / `DOWN` | Increase or decrease attenuation by one step; these remain available while locked |
 | `F` then `2` or `3` | Step audio or attenuation **backwards** through its cycle; an `F` shows in the status bar while armed |
 | `M` | Reset the peak (`PK`), minimum (`MN`) and trend references |
+| Hold `F` for approximately 0.5 seconds | Lock or unlock the Fox Hunt / Beacon controls |
 | Either side button | Switch immediately to Beacon mode |
 | `EXIT` | Leave Fox Hunt / Beacon and return to the normal radio screen |
 
@@ -76,7 +80,7 @@ Every setting has its own key — there are no navigation arrows to remember, an
 
 Direction finding with a handheld relies on watching *how the level changes*, not its absolute value:
 
-* **Attenuation** is the key tool as you close in. When a nearby transmitter drives the meter to full scale you lose the ability to tell "closer" from "farther"; add attenuation (`3`) to bring the reading back into the middle of the scale so small changes stay visible. Four levels are available: `0`, `6`, `15`, and `27 dB`.
+* **Attenuation** is the key tool as you close in. When a nearby transmitter drives the meter to full scale you lose the ability to tell "closer" from "farther"; add attenuation with `3` or `UP` to bring the reading back into the middle of the scale so small changes stay visible. The normal steps are `ATT 0`, `ATT 6`, `ATT 15`, and `ATT 27`, followed by the deeper `BYP` and `BYP+` front-end-gain settings.
 * **Body scan** is how you get a bearing without a directional antenna. Hold the radio against your chest and turn slowly through a full circle: your body shields the antenna when it faces the transmitter, producing a clear **minimum (null)** in one direction. Reset with `M`, sweep once, and read the bearing where the level dips.
 * **Peak (`PK`) and minimum (`MN`) hold** keep the strongest and weakest levels seen since the last reset. They bracket a rotation — the deeper `MN` sits below `PK`, the sharper and more reliable the null. Reset both with `M` before each sweep.
 * **Trend** shows whether the signal is rising or falling over the last second — useful while walking a bearing.
@@ -85,6 +89,25 @@ The signal-history graph (`1`) also shows the shape of a rotation directly: the
 
 In Geiger audio mode, the beeps become faster and higher-pitched as the received level rises. In station-audio mode, the received audio is routed to the speaker. Both audio modes remain silent below approximately `-120 dBm` to avoid continuous noise-floor output.
 
+### About BYP and BYP+
+
+`BYP` and `BYP+` are convenient labels for close-range gain settings; they do **not** activate a hardware LNA-bypass switch. Both keep the final PGA gain low and reduce gain earlier in the BK4829 receiver chain. `BYP+` applies the deepest reduction.
+
+The displayed `dBm` value is not compensated for the selected gain setting, so it intentionally drops when changing to a deeper step. Use readings comparatively while staying on the same step rather than comparing absolute values across two different steps.
+
+After every gain change, the firmware waits briefly for the RSSI detector to settle, then resets the peak, minimum, trend, and signal-history references to the new level. This prevents an old high-gain peak or an artificial graph cliff from carrying into the new range.
+
+### Fox Hunt / Beacon keypad lock
+
+Hold `F` for approximately 0.5 seconds to toggle the local keypad lock. A padlock appears in the status line. This lock is shared when switching between Fox Hunt and Beacon, but it is separate from the radio's normal `SetLck` keypad setting.
+
+While Fox Hunt is locked, every control is ignored except:
+
+* `UP` and `DOWN`, which remain available to adjust attenuation during the final approach
+* another long press of `F`, which unlocks the controls
+
+While Beacon is locked, all ordinary controls are ignored, including during an active transmission. Hold `F` again to unlock. The lock is temporary and is always cleared when Fox Hunt / Beacon is opened again; it is not saved with the other settings.
+
 <img width="640" height="384" alt="screenshot_2026-08-03_21-37-47-157Z" src="https://github.com/user-attachments/assets/f3352763-c1d6-4048-85a6-decb94a2aed1" />
 
 ## Beacon mode
@@ -134,6 +157,7 @@ The three settings map to the number keys in the order they appear on screen, an
 | `2` | Cycle the `IDLE` interval: `5` → `240 s`, then back to `5` |
 | `3` | Cycle the `FOX` identifier: `MOE` → `MOI` → `MOS` → `MOH` → `MO5` → `MO` → `CALL` → `MOE` |
 | `F` then a number | Step that setting **backwards** through its cycle (handy for the long `IDLE` range); an `F` shows in the status bar while armed |
+| Hold `F` for approximately 0.5 seconds | Lock or unlock all Beacon controls, including during TX |
 | `M` | Stop the current transmission and begin a fresh silent interval; during the silent phase, restart the `IDLE` countdown |
 | Either side button | Return to Fox Hunt (interrupts the current transmission if necessary) |
 | `EXIT` | Leave Fox Hunt / Beacon (interrupts the current transmission if necessary) |
@@ -152,7 +176,7 @@ Before every Beacon burst, the firmware checks the normal transmit restrictions
 
 If transmission is refused, Beacon displays the corresponding radio status, such as `TX DISABLE`, `BAT LOW`, or `VOLTAGE HIGH`, then returns to Fox Hunt mode.
 
-Beacon continues running through normal inactivity periods, so `SetOff` does not put the radio to sleep while it is acting as a beacon. Battery level is refreshed during silent intervals and the transmit checks are repeated before every burst.
+Fox Hunt and Beacon both continue running through normal inactivity periods, so `SetOff` does not put the radio to sleep or return it to the main VFO while either mode is active. The normal backlight timeout still operates. Battery level is refreshed during idle operation and the transmit checks are repeated before every Beacon burst.
 
 ## Saved settings and Air Copy
 
@@ -167,6 +191,8 @@ The following Fox Hunt / Beacon settings are stored in external flash:
 
 Changes are saved automatically and restored the next time the feature is opened. They are also included in an Air Copy `Settings` transfer. A full factory reset clears them.
 
+The temporary Fox Hunt / Beacon keypad lock is not stored or copied.
+
 ## Related pages
 
 * [Button functions](./Button-functions)

Getting-started.md

@@ -12,13 +12,13 @@ If you only want to program a frequency, test the radio, and save it:
 1. Select the active VFO with `F` + `2 A/B`.
 1. Switch that VFO to `frequency mode` with `F` + `3 VFO/MR`.
 1. Enter a frequency with the keypad.
-1. Open the menu with `M` and adjust the basic items you need (`Step`, `Power`, tones, offset, bandwidth, `Mode`, `TXLock`).
+1. Open the menu with `M`, choose `Channels` (or `All`), and adjust the basic items you need (`Step`, `Power`, tones, offset, bandwidth, `Mode`, `TXLock`).
 1. Save the setup with `ChSave` if you want to keep it as a memory channel.
 1. Switch back to `channel mode` with `F` + `3 VFO/MR` when you want to browse saved channels.
 
 If you need to view or control the radio from a browser, inspect RF activity, flash firmware, back up calibration, or upload a custom boot logo, use [UV Studio](./UV-Studio). It combines K5Viewer and UVTools2 in one interface. If you prefer programming memories from a computer, use the `CHIRP` driver provided with each firmware release. See [Programming with CHIRP](./Programming-with-CHIRP) for the dedicated `Fusion` workflow.
 
-If you already know the firmware and only want the main changes prepared for `v5.6.0`, see [Recent changes](./Recent-changes).
+If you already know the firmware and only want the main changes prepared for `v5.9.0`, see [Recent changes](./Recent-changes).
 
 > [!WARNING]
 > Do not use Quansheng CPS. It overwrites custom settings.
@@ -86,6 +86,7 @@ These terms appear throughout the wiki:
 * `VFO mode`: you type frequencies directly and adjust live settings before saving them
 * `Channel mode` / `memory mode`: you browse saved memory channels
 * `Main VFO`: the active upper or lower line, marked by `►`
+* `Menu category`: the first menu level in Fusion `v5.9.0`; `All` restores the original flat order and global numbering
 * `F Lock`: the main TX band plan
 * `TXLock`: an extra per-channel TX permission when a frequency is outside the selected `F Lock` plan
 * `Scan list`: one of the `24` memory-scan groups, or `ALL`

Home.md

@@ -9,7 +9,7 @@ The Fusion edition brings together, in a single firmware, all the different edit
 
 If you are new to the firmware, a good reading order is: [Getting started](./Getting-started), [Programming with CHIRP](./Programming-with-CHIRP) if you manage the radio from a computer, [Radio operation](./Radio-operation), [Scanning](./Scanning), [Menu](./Menu), then [Button functions](./Button-functions). If you prefer visual walkthroughs, see [Videos and tutorials](./Videos-and-tutorials).
 
-If you are upgrading from an earlier `v5.x` build, see [Recent changes](./Recent-changes) for the main user-visible changes in recent releases and the current `v5.8.0` development branch.
+If you are upgrading from an earlier `v5.x` build, see [Recent changes](./Recent-changes) for the main user-visible changes in recent releases and the current `v5.9.0` development branch.
 
 > [!WARNING]
 > THIS FIRMWARE HAS NO REAL BRAIN. PLEASE USE YOUR OWN.

Menu.md

@@ -5,19 +5,43 @@
 
 The menu can be accessed with the `M` button _(short press)_.
 
-Once in the main menu, the items are displayed on the left-hand side of the screen. The currently selected item is highlighted, and its current value is shown on the right. The menu item number is shown at the bottom-left corner, ranging from `01` up to the highest number.
+In Fusion `v5.9.0`, the menu opens on a category browser. Select a category with `UP` / `DOWN`, then press `M` to open its item list. The selected item is displayed on the left-hand side of the screen and its current value is shown on the right.
 
-To find a menu item, use the `UP` and `DOWN` arrow buttons, or enter the **_menu item number_** (see the lists below) on the numeric keypad. For instance, to access `SysInf`, enter `52` on the keypad.
+To find a menu item, browse its category or select `All` to use the original flat menu. You can also enter the **global menu item number** from the category screen; for instance, enter `52` to access `SysInf`. Direct number entry switches to `All` and preserves the established `01` to `77` numbering.
 
 Once the desired menu item is highlighted, pressing the `M` button enters that menu item.
 
-Once the menu item is selected, pressing the `UP` and `DOWN` arrow buttons adjusts the setting for that item. To confirm the selection, press the `M` button. To cancel the selection, press the `EXIT` key.
+Once the menu item is selected, pressing the `UP` and `DOWN` arrow buttons adjusts the setting for that item. To confirm the selection, press the `M` button. To cancel the selection, press `EXIT`.
+
+From an item list, short-press `EXIT` to return to the category browser. Short-press `EXIT` again to leave the menu and return to the radio screen.
 
 ![Menu](https://github.com/user-attachments/assets/e12cd5c2-c1ad-441d-819f-b90c047c2f7a)
 
+## Categorized menu browser
+
+The Fusion category screen shows the previous, current, and next category on the left. The right side shows how many items the highlighted category contains.
+
+| Category | Fusion items | Contents |
+| --- | ---: | --- |
+| `Channels` | 20 | frequency step, power, tones, offset, bandwidth, channel and memory settings |
+| `Scan` | 6 | scan list, priority channels, resume mode and scan engine |
+| `Keys` | 10 | programmable shortcuts, keypad lock, PTT mode and call channel |
+| `Power` | 4 | battery saver/display, inactivity timeout and screen saver |
+| `Display` | 11 | channel display, startup screen, backlight and UI settings |
+| `Timers` | 4 | TX timeout, EOT and RX/TX timer settings |
+| `Audio` | 5 | microphone, keypad beep, volume and RX audio profiles |
+| `Radio` | 6 | squelch, STE, roger beep, VOX and RX mode |
+| `DTMF` | 5 | up/down codes, side tone, preload and live decoder |
+| `Service` | 6 | hidden startup menus; only visible after the hidden-menu boot gesture |
+| `All` | 71 normally, 77 with Service | original flat-menu order and global numbering |
+
+The item counter inside a filtered category is local to that category. Use `All`, or enter a number from the category screen, when you want the global numbers listed below.
+
+The firmware remembers the last selected category and the last highlighted item in each category for the current session. These navigation positions are not saved across a restart.
+
 ## Quick tips
 
-* the first 13 items are the main live VFO/channel settings
+* in `All`, the first 13 items are the main live VFO/channel settings
 * `ScList`, `ScPri`, `PriCh1`, `PriCh2`, and `ScnRev` are the key scan-related items
 * `F1Shrt`, `F1Long`, `F2Shrt`, `F2Long`, and `M Long` control customizable shortcuts
 * the hidden menu is only available at startup with `PTT` + `SIDE BUTTON 1️⃣`
@@ -205,16 +229,15 @@ The hidden menu is activated by holding `PTT` + `SIDE BUTTON 1️⃣` while turn
     * GMRS FRS MURS
     * DISABLE ALL - disables TX on all frequencies
     * UNLOCK ALL - enables TX on all bands. It has an additional lock; see [how to turn that on](./Advanced-features#tx-on-all-bands).
-1. `350 En` - enables RX on `350 MHz`
-1. `BatCal` - battery voltage calibration. Compare the displayed voltage with a multimeter and adjust it until they match as closely as possible
-1. `BatTyp` - battery type / discharge curve used for the battery percentage calculation. It affects `%`, not the measured voltage itself
-1. `SetNav` - configures the navigation type (UP/DOWN for UV-K5, LEFT/RIGHT for UV-K1)
-1. `Reset` - resets radio configuration settings
+73. `350 En` - enables RX on `350 MHz`
+74. `BatCal` - battery voltage calibration. Compare the displayed voltage with a multimeter and adjust it until they match as closely as possible
+75. `BatTyp` - battery type / discharge curve used for the battery percentage calculation. It affects `%`, not the measured voltage itself
+76. `SetNav` - configures the navigation type (UP/DOWN for UV-K5, LEFT/RIGHT for UV-K1)
+77. `Reset` - resets radio configuration settings
    * VFO - removes only channel settings
    * ALL - resets all (channel and radio settings)
 
-> [!NOTE]
-> In upcoming `v5.6.0` builds, `SetSav` adds one item to the main menu, so the hidden menu starts at `72` instead of `71` as it did in `v5.5.0`.
+On the categorized menu screen, these six entries appear in the `Service` category. They are also appended to `All`, where the complete counter runs through `77/77`.
 
 ## Related pages
 

Radio-operation.md

@@ -161,6 +161,8 @@ then your radio will automatically enter sleep mode. You will be notified 10 sec
 
 Note that sleep mode will be activated even if you are scanning, as long as no reception occurs.
 
+Fox Hunt and Beacon are deliberate exceptions in `v5.9.0`: while either mode is active, the radio ignores `SetOff` and remains in that mode until you explicitly leave it. The normal backlight timeout still operates. See [Fox Hunt and Beacon](./Fox-Hunt-and-Beacon#transmission-protections).
+
 Once in sleep mode:
 
 * the screen is completely off

Recent-changes.md

@@ -7,16 +7,56 @@ This page summarizes the main user-visible changes in recent `v5.x` builds and o
 
 For the official release archive, see the [GitHub releases page](https://github.com/armel/uv-k1-k5v3-firmware-custom/releases).
 
-## v5.8.0 development highlights
+## v5.9.0 development highlights
+
+These changes are based on commits after the `v5.8.0` tag in `feature_update_v5`.
+
+### Categorized menu browser
+
+Fusion development builds open the menu on a category screen instead of immediately showing the original flat list. The available categories are `Channels`, `Scan`, `Keys`, `Power`, `Display`, `Timers`, `Audio`, `Radio`, and `DTMF`. The hidden-menu startup also adds a `Service` category.
+
+The `All` category keeps the original flat-menu order and global numbering. Entering a menu number directly from the category screen also switches to `All`, so existing numbered-menu shortcuts continue to work. The firmware remembers the last selected category and the last item used in each category for the current session.
+
+See [Menu](./Menu#categorized-menu-browser).
+
+### Side-key action picker
+
+After pressing `F`, hold either side button to open a temporary action picker. Use `UP` / `DOWN` to browse the available compiled shortcut actions and press `M` to run the highlighted action. `EXIT` or `F` cancels the picker; pressing `PTT` closes it and continues with normal transmit handling.
+
+The picker closes automatically after approximately five seconds or when reception starts. Each side button remembers its last picker selection until the radio restarts. A normal short `F` + side-button press keeps its existing Step-up / Step-down behavior.
+
+See [Button functions](./Button-functions#side-key-action-picker).
+
+### Fox Hunt / Beacon improvements
+
+Fox Hunt adds two deeper front-end-gain steps after the original `ATT 0`, `ATT 6`, `ATT 15`, and `ATT 27` settings. They are shown as `BYP` and `BYP+`; these names describe convenient close-range modes, not a literal hardware bypass. `UP` and `DOWN` now change attenuation directly.
+
+After a gain change, the firmware briefly lets the RSSI detector settle and then resets the peak, minimum, trend, and signal-history references. This avoids stale peaks and artificial jumps when moving between gain ranges.
+
+Holding `F` for approximately 0.5 seconds toggles a temporary keypad lock shared by Fox Hunt and Beacon. In Fox Hunt, `UP` and `DOWN` remain available for attenuation while locked. In Beacon, all normal controls are blocked until the same long press unlocks the keypad, including during an active transmission.
+
+Fox Hunt and Beacon now both ignore the normal `SetOff` inactivity timer and remain active until explicitly exited. Their ordinary backlight timeout and battery updates continue to operate.
+
+See [Fox Hunt and Beacon](./Fox-Hunt-and-Beacon).
+
+### Scan and FM broadcast fixes
+
+During memory scan, changing the active scan list temporarily holds scan resumption while the scan-list name is actually displayed. This keeps the hidden progress gauge and the scan position synchronized. Frequency and range scans are not paused because they do not show the name overlay.
+
+An active FM broadcast station scan now ignores an incoming signal detected on the main radio channel, so the FM scan is not interrupted. Normal FM listening still yields to main-channel reception as before.
+
+See [Scanning](./Scanning#changing-the-scan-list-during-scan) and [FM broadcast receiver](./FM-broadcast-radio-receiver#scanning-for-stations-from-fm-vfo).
+
+## v5.8.0 highlights
 
 These changes are based on commits after the `v5.7.0` tag in `feature_update_v5`.
 
 ### Fox Hunt / Beacon
 
-Fusion development builds add a programmable `FOX HUNT / BEACON` action with two complementary modes:
+Fusion builds add a programmable `FOX HUNT / BEACON` action with two complementary modes:
 
 * Fox Hunt provides a calibrated `dBm` display, S-meter and peak readings, a one-second signal trend, selectable attenuation, Geiger-style or received-station audio, and a choice between a staircase gauge and an approximately 18-second signal history.
-* Beacon uses the active TX VFO to transmit `<CALLSIGN> BEACON` in Morse, followed by an adjustable `5` to `60-second` silent interval.
+* Beacon uses the active TX VFO to transmit an ARDF identifier or `<CALLSIGN> MOE` in Morse, with adjustable `5` to `60-second` TX windows and `5` to `240-second` silent intervals.
 
 Beacon takes its callsign from CHIRP `Message Line 1` and begins its first transmission immediately when selected. Before every burst, the firmware checks the applicable TX frequency lock, per-VFO `TXLock`, battery state, and modulation restriction.
 

Scanning.md

@@ -123,6 +123,10 @@ The active scan list can be changed without stopping the scan.
 
 If the requested list is empty, the radio beeps and jumps to the next valid, non-empty list.
 
+When a memory scan switches lists, the list name temporarily replaces the progress gauge. In `v5.9.0`, scan resumption is held while that name is actually visible, so the hidden gauge and the current scan position cannot drift apart and then jump forward when the gauge returns.
+
+This short hold applies only to memory scan. Frequency scan and `ScnRng` may still arm the same overlay countdown through their controls, but they do not display a scan-list name and therefore continue without an unexplained pause.
+
 ### Changing Scan Direction
 
 While scanning, press a navigation key:

Troubleshooting.md

@@ -188,6 +188,8 @@ Check these menus:
 
 If `SetOff` is not `OFF`, the radio can enter sleep mode after inactivity even while scanning, as long as no reception occurs.
 
+In `v5.9.0`, Fox Hunt and Beacon intentionally ignore `SetOff`. If the radio remains awake in either of those modes, leave Fox Hunt / Beacon with `EXIT` before diagnosing the inactivity timer.
+
 See also: [Radio operation](./Radio-operation#about-the-setoff-menu).
 
 ## Navigation seems to move in the wrong direction
@@ -213,6 +215,7 @@ Check these possibilities:
 1. `SetLck` may also lock the programmable side-button / `M Long` actions, the `PTT`, or both
 1. RescueOps mode disables most long presses and `F` key combinations
 1. some actions differ between `F+` and long press
+1. in Fusion `v5.9.0`, `F` followed by a short side-button press still adjusts Step, while `F` followed by holding that side button opens the action picker
 
 See also: [Button functions](./Button-functions) and [Advanced features](./Advanced-features#rescueops).