using TL866 or SDL, SCL and GND (just open bottom case) like picture. Power on radio with 12v conecting pins 12v, safe and gnd. When it is a radio display CODE, it can be used as the radio button. After success programming disconect power supply and connect it again after 2 minutes. enter code marked in file. I am not responsible for your radio.
using TL866 or other programmer tools connect pins respectively SDA, SCL and GND (just open bottom case)like picture. Power on radio with 12v conecting pins 12v, safe and gnd. When radio display CODE, just conect programmer tool, open one of the files attached (select 24c64 eeprom) and write to device. After success programming disconect power supply and connect it again after 2 minutes. enter code marked in file you loaded and everything is ok. I am not responsible for any damage of your radio,.