diff --git a/AGENTS.md b/AGENTS.md
index d0ed878..5ebbbb7 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -625,6 +625,22 @@ One thing that cost a round here: the server gives the emulator it starts a seri
 QEMU exit **before** it opens QMP -- which surfaces only as "QMP socket never appeared", with
 nothing else naming the cause. QEMU's option errors go to stdout, which the launcher discards.
 
+**Launching one is `F` then `7`, then MENU to run it.** That is upstream's own wording --
+UVStudio's `locales/en.js` says "launch them from the F + 7 menu" -- and it is what
+`App/apps/app_menu.c` does: `KEY_MENU` on an installed row calls `APP_LaunchOverlay(sel)`,
+which "runs until the app exits"; EXIT leaves the menu. Verified in the emulator, with
+`Tetris.app` installed through the page's own endpoint:
+
+    F, 7   -> the app region goes from 0 reads to 8, and a boxed "F4HWN APPS" screen appears
+    MENU   -> one read inside slot 0's code, and the game's own screen replaces the radio's
+    DOWN   -> the piece moves; the screen is still the game two seconds later
+
+For a while before that I could not find the way in at all: twenty keys short and long, the
+whole 79-entry settings menu, and the multiboot menu all left the app region untouched, and
+the multiboot menu reads firmware slots rather than apps. **The answer was written down in
+the flasher's own translation file**, not in the firmware source I had been reading -- so
+when a feature's entry point is missing, the host tool that installs it is the document.
+
 ## The keypad: two real bugs, both fixed
 
 The old note here said "keys reach the firmware but the UI does not react" and
diff --git a/AGENTS.zh-CN.md b/AGENTS.zh-CN.md
index 023fa30..e2d38fd 100644
--- a/AGENTS.zh-CN.md
+++ b/AGENTS.zh-CN.md
@@ -507,6 +507,19 @@ UVStudio **只用槽 0..7 并显示为 1..8**；而且它**最后才写头** —
 缺 DLL 会让 QEMU **在打开 QMP 之前**就退出，而这只表现为"QMP socket never appeared"，
 没有别的线索。QEMU 的参数错误走的是 stdout，而启动器把它丢掉了。
 
+**启动方式是先按 `F` 再按 `7`，然后用 MENU 运行。** 这是上游自己的措辞 ——
+UVStudio 的 `locales/en.js` 原文是 "launch them from the F + 7 menu" —— 也正是
+`App/apps/app_menu.c` 的做法：在已安装的那一行按 `KEY_MENU` 会调用 `APP_LaunchOverlay(sel)`，
+它"一直运行到应用退出"；EXIT 退出菜单。在模拟器里验证过，`Tetris.app` 是通过页面自己的接口装的：
+
+    F, 7   -> app 区读取从 0 次变成 8 次，出现带框的 "F4HWN APPS" 界面
+    MENU   -> 槽 0 代码区出现 1 次读取，游戏自己的画面取代了电台界面
+    DOWN   -> 方块移动；两秒后屏幕上仍然是游戏
+
+在此之前我找了很久都进不去：二十个键的短按与长按、整整 79 项设置菜单、以及多系统菜单，都没让
+app 区被读过 —— 而多系统菜单读的是**固件槽**，不是应用。**答案写在刷机工具自己的翻译文件里**，
+不在我一直在读的固件源码里 —— 所以当一个功能的入口找不到时，**安装它的那个主机工具就是文档**。
+
 ## 键盘：两个真 bug，都已修复
 
 这里原来的笔记写的是"按键到达了固件但界面不反应"，并且归咎于机器模型。结果发现有**两个