To restore an "Extra Quality" 22.3.1 clone, follow this repair workflow. 1. Identify the Chipset

If it shows as a generic "USB Serial Port," the EEPROM is corrupted.

Open the shell of your HEX-V2. Look for the main processor. If it is an chip, you cannot use the old "Mule" or "VAGCOM_EEWrite" tools meant for ATMEGA chips. You will likely need an ST-Link V2 programmer . 2. The Loader Software

Check the in Device Manager. It should typically be 0403 / FA24 .

Never update the software via the official Ross-Tech pop-up.

Solder wires to the points on the PCB. Connect to an ST-Link V2.

The "Extra Quality" clones typically use an or STM32F429 ARM chip. Unlike the older ATMEGA-based HEX-USB+CAN cables, these V2 clones support the newer VIN-limited protocols and faster communication speeds required for modern VW, Audi, Seat, and Skoda vehicles. Common failure symptoms include: