: Poor or incorrect wiring connections between the Kess V2 and the vehicle's OBD-II port can also prevent proper communication.

If the card is corrupted, you must re-image it. Simply copying files is often insufficient because the card contains hidden partitions or specific file structures. Get a New Card : Purchase a high-quality 2GB or 4GB industrial-grade SD card

: Visual guide on rewriting the microSD card located on the electronic board.