| Error / symptom | What to do | |----------------|-------------| | “No update file found” | Check file is .epk, in root of FAT32 USB | | “Downgrade not allowed” | v3.51.01 is older than current → you cannot install it | | TV freezes during update | Unplug power, USB, restart. TV will revert to old firmware | | USB not recognized | Try smaller drive (≤4 GB) or older USB 2.0 drive |

⚠️ Do not power off the TV or remove the USB drive during the update. Interruption may permanently damage the TV.

: Create a new folder in the root directory of the USB drive named exactly