Write dBmCorrTable only if flash zone is erased

App/settings.c

@@ -100,9 +100,21 @@ void SETTINGS_InitEEPROM(void)
 
             // 5. Reset dBmCorrTable
             int8_t buf[7];
-            for (uint8_t i = 0; i < 7; i++)
-                buf[i] = dBmCorrTable[i];  // values from misc.c
-            PY25Q16_WriteBuffer(0x00A0B9, buf, 7, false);
+            PY25Q16_ReadBuffer(0x00A0B9, (uint8_t *)buf, 7);
+
+            bool allFF = true;
+            for (uint8_t i = 0; i < 7; i++) {
+                if ((uint8_t)buf[i] != 0xFF) {
+                    allFF = false;
+                    break;
+                }
+            }
+
+            if (allFF) {
+                for (uint8_t i = 0; i < 7; i++)
+                    buf[i] = dBmCorrTable[i];
+                PY25Q16_WriteBuffer(0x00A0B9, buf, 7, false);
+            }
         }
     }