There is a common saying in the VCDS community: "If it ain't broke, don't fix it." If your HEX-V2 is working perfectly with your 2015 Golf and you never plan to touch a 2024 Audi Q8, you do not need to update. New firmware sometimes introduces stricter timing that can actually break compatibility with very old (pre-2005) VAG cars.
does need to be plugged into a vehicle to update its firmware. Just plug it into your laptop's USB port. Step-by-Step Update Guide Launch VCDS : Open the VCDS software on your computer. Connect the Interface : Plug your into a USB port. ross tech hex v2 firmware update
The VIN limit is stored in a secure EEPROM sector that is not touched during standard firmware updates. Your unlimited status and existing VINs remain intact. There is a common saying in the VCDS