Updating via SD card (the "Burn Card" method) is safer than USB because it doesn't require a PC connection during the actual flash.

Instead of using a PC USB cable (Amlogic USB Burning Tool), the SD card method lets you flash firmware by:

Method 1: Using Amlogic Burn Card Maker (for .img files)

Release the button and let the upgrade process finish. The box will reboot automatically into Android 7.1.2. Troubleshooting Common Flashing Issues The Device Boots to the Old Screen / Ignores SD Card

Found in some budget or "fake" versions.

: Your SD card might not be formatted to FAT32, or the files are hidden inside a subfolder. Ensure the files are loose on the card. Alternatively, try a different SD card under 16GB, as older boxes struggle to read larger storage formats. Stays Stuck on the MXQ Pro 4K Boot Loop Logo

“[ROM] MXQ Pro 4K (S905X) Android 7.1.2 Stock Firmware (all wifi chips)”