XIEGU X5105 Firmware Update Instructions page 9

c) Transfer start
If you forgot to check the 1K checkbox, the speed will drop down to about 4KB/s instead of
8~10KB/s and the transfer will fail. So better keeping eyes on it.
6. Configurations after update
There might be some random data stored in the internal EEPROM of X5105, so after the
updating, configurations need to be done.
a) Power ON the X5105.
b) If the keypad of X5105 is not respond, Press the LOCK KEY for several times, and make
sure the LOCK ICON is disappeared.
c) Press and hold MENU KEY for about 2 seconds to entering the System Setting Menu,
Press Left or Right button to select MENU#21, Tuning the MAIN DIAL KNOB to change
the menu item to YES, Press YES button to apply main reset.
Blinking