If your cable is "bricked" (lights flashing red or license revoked), you may need to force a firmware update or use a specialized loader.
: If the interface is unrecognized or stuck in a loop, it may be in a failed firmware update state (indicated by flashing red lights). Accessing the VCDI config utility through the Ross-Tech official site and forcing a download update can sometimes reset the device. vcds hex v2 clone repair better
Erase the chip, then write the HEX firmware (usually VCDS_HEX_V2_1.96.hex or similar). Then, write the EEPROM file ( eeprom_24c64.bin ) to the external 24C64 chip via the SOIC8 clip. If your cable is "bricked" (lights flashing red
Some specific PDF-like threads (often printable): Erase the chip, then write the HEX firmware
: Older "HEX-V2" clones may actually be HEX+CAN (V1) hardware using an ATmega 162 chip, which has limited support for newer (post-2019) UDS vehicles.