Ac8257 Firmware New -

If you have obtained the correct "update.zip" or configuration files: Prepare Media : Format a USB drive to Transfer Files : Copy the update files directly to the root directory (not inside a folder). Installation Insert the USB drive into the head unit's OTG port. Navigate to Settings > System Update The unit should auto-detect the file. Tap : The process takes 5–15 minutes Do not power off the vehicle

: Do not power off the vehicle or disconnect the drive during the 5–10 minute process, as this can "brick" the unit. Critical Troubleshooting ac8257 firmware new