@LoseHu I found a bug. Please investigate to determine the cause.
Device UVK5, Mainboard silkscreen V1.6
Function 23, 24, 25, 26, and 27: When using the up/down keys to switch between short/long press functions for side buttons 1 and 2, the previous setting remains. Directly pressing a number does not.
For example, pressing and holding the M key - 27 disables it.
At this point, press the power button to enter the long press of side key 2-26, or disable it.
If you press and hold the side button 2-26, entering the number 26 will display the real power adjustment function.
The same applies to the others.
Additionally, long-pressing any key other than the PTT key will continuously display "Unlock All Keys," and releasing it allows normal operation. What is this function?