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 will provide the transfer record from the vehicle registration certificate. A high number of transfers does not necessarily indicate poor condition (for example, internal transfers within a family for quota purposes), but we will consider it a risk factor and conduct a more thorough physical inspection to verify its actual condition.

We will remove the chassis guard to physically inspect the battery pack's lower shell for serious dents or scratches, and check for signs of mud or sand intrusion in the waterproof vent at the edge of the battery pack.