: Go to Car Settings > System Settings > About and note your current "App Version" or "Build Number". Prepare the USB Drive : Use a high-quality USB drive formatted to FAT32 .
Before starting, follow these expert recommendations to avoid permanent damage: allwinner t5 firmware update full
Do not power off the car or disconnect the USB during this time, as it can brick the device. Method 2: Online OTA Update : Go to Car Settings > System Settings