: Use a drive with at least 1GB of space. Format it to FAT32 on your computer to ensure the projector can read the boot files.
: Ensure the file is named correctly (usually MERGE.bin or similar) and the USB is formatted to FAT32, not NTFS. kt20-y-multi-v2.0 update
: Plug in the power cord and long-press the power button until the upgrade progress bar appears. : Use a drive with at least 1GB of space