Flash the firmware from repository.
Flashing firmware from file.: C:\Users\Robert\Desktop\quad\kkmulticopterflashtool_0.63\tmp\KK2_1V5\kk2.hex
C:\Users\Robert\Desktop\quad\kkmulticopterflashtool_0.63\lib\avrdude\windows\avrdude.exe -C C:\Users\Robert\Desktop\quad\kkmulticopterflashtool_0.63\lib\avrdude\windows\avrdude.conf -p m324pa -P usb -c usbasp -B 8 -e -U flash:w:C:\Users\Robert\Desktop\quad\kkmulticopterflashtool_0.63\tmp\KK2_1V5\kk2.hex:i
avrdude.exe: set SCK frequency to 93750 Hz
avrdude.exe: warning: cannot set sck period. please check for usbasp firmware update.
avrdude.exe: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.02s
avrdude.exe: Device signature = 0x1e9511
avrdude.exe: erasing chip
avrdude.exe: set SCK frequency to 93750 Hz
avrdude.exe: warning: cannot set sck period. please check for usbasp firmware update.
avrdude.exe: reading input file "C:\Users\Robert\Desktop\quad\kkmulticopterflashtool_0.63\tmp\KK2_1V5\kk2.hex"
avrdude.exe: writing flash (32112 bytes):
Writing | ################################################## | 100% 19.34s
avrdude.exe: 32112 bytes of flash written
avrdude.exe: verifying flash memory against C:\Users\Robert\Desktop\quad\kkmulticopterflashtool_0.63\tmp\KK2_1V5\kk2.hex:
avrdude.exe: load data flash data from input file C:\Users\Robert\Desktop\quad\kkmulticopterflashtool_0.63\tmp\KK2_1V5\kk2.hex:
avrdude.exe: input file C:\Users\Robert\Desktop\quad\kkmulticopterflashtool_0.63\tmp\KK2_1V5\kk2.hex contains 32112 bytes
avrdude.exe: reading on-chip flash data:
Reading | ################################################## | 100% 18.08s
avrdude.exe: verifying ...
avrdude.exe: 32112 bytes of flash verified
avrdude.exe done. Thank you.