Keyboard can't work

[Manlio]

My keyboard can't work some time,then I read back the hex from device. And I find that there are 4 byte be changed.

if I modify the left 4 red bytes to right. Then programm the hex to device, the device can work again.

I don't know why. Can you give me some advice?

Thank You!

[Manlio]

There SDK is nRFready Desktop 2 v1.0.5. And the softdevice is 5.2.1. Chip version is N51822 QFAAC0 1324BJ.

assert_nrf... s_line_num = 769, s_file_name = ......\common\modules\m_coms_ble_flash.c

assert_nrf... s_line_num = 783, s_file_name = src\ll_lm.s0.c

Beginning, we can connect and bond, and it can work normally. Somtime it can't work suddenly. Then we debug, find that error message and the data in 0x3FC00 to 0x3FC20 is different.