Once the car system (especially in a closed ecosystem) undergoes a major version upgrade, its bootloader is usually locked, preventing downgrades. If this happens, there is basically no solution in an overseas environment. Therefore, we strongly warn: do not blindly insert a USB drive to upgrade while offline.

We maintain an absolute skeptical attitude. In addition to regular visual inspections, we focus on checking for sediment accumulation around the sunroof drainage channels and look for water stains under the A-pillar trim and front floor mats. This is the only effective physical evidence to determine if the sunroof drainage holes are blocked, leading to hidden leaks.

Our responsibility ends with delivering the vehicle to the Russian border or Far East port and providing the legal Chinese export documents. The payment of Scrap Tax, application for SBKTS (Vehicle Structure Safety Certificate), and activation of the final e-PTS electronic passport must be fully handled by the Russian buyer and their local customs broker.