Bad eeprom checksum IHAS 122-04B


I done a bad eeprom flash on a IHAS 122 now the led is blinking and the eeprom utility says checksum is bad when I try to repair…says contact the codeguys
I have a backup of the eeprom but it doesn’t work… I used the RESTORE option but…led still blinks

how I can recover the drive? thanks

have you found out how to do it yet as mines the same