Regarding the modifications in CA520 latest version 260522, please be informed as follows:

• 1. Support for camera model 8800.
• 2. Optimized the issue of TX disconnecting intermittently (low probability).
• 3. Optimized the issue where the TX disconnect light keeps flashing but fails to reconnect (low probability).
• 4. Optimized the issue where TX light does not flash and RX does not display camera view (low probability).
• 5. Fixed the issue on LZY-QT76 where after pressing the car's home button to return to the head unit interface, it cannot come back.
• 6. Optimized the issue on Mercedes-Benz original buttons where music pauses correctly but cannot resume playback when pressed again.
• 7. Optimized the issue on Volkswagen 869 where there is no sound for a second incoming call while in the FM interface.
• 8. Optimized the issue where reconnecting after disconnection does not restore the previous split-screen or picture-in-picture state.
• 9. Optimized the issue where switching the camera view in CarPlay may flash one frame of the CarPlay UI (low probability).
• 10. Optimized the issue where the overlay function bar is positioned too low on irregular head units.
• 11. Optimized the reconnection logic.
• 12. Optimized the low-probability freeze issue of the camera view.
• 13. Optimized issues listed in the bug list.
• 14. Modified knob-related issues.
• 15. Improved the upgrade process and added SN-based upgrade.
• 16. Fixed the issue where the screen freezes when switching between split-screen and picture-in-picture modes.
• 17. Optimized the issue where the TX fails to connect with low probability after long-term simulated repeated plugging/unplugging of the receiver.
• 18. Optimized icon overlapping and improved the issue of overly small icons on low-resolution head units.
• 19. Optimized UI stability.
• 20. Fixed the issue where opening the phone's camera app while the camera is in full screen automatically switches to the CarPlay interface.
• 21. Optimized the issue where TX enters recovery mode for upgrade, fails again, and then pairs with RX with low probability.