It entirely depends on what unit you have, and which part is causing such error.
1. If it is "hardware", then you have to fix it electronic wise.
2. If it is an EEPROM problem, you can only use Dejan flasher on units that have EEPROM emulated in flash (i.i 3310, 6210, 7110). If not (like 5110, 3210, etc), then you need a separate hardware to extract EEPROM contents then repair the file.
3. If it is an MCU or PPM data corruption.
Regards,
aCe