| Error | Solution | |-------|----------| | | Reformat to FAT32. Use a smaller USB (under 8GB). | | Update fails at 50% | Bad download. Re-download the firmware. Check USB for bad sectors. | | Screen is upside down | Change "Mirror" or "Flip" setting in Factory Menu (press 8899 on remote in Menu). | | TV turns on but no backlight | Your inverter or LED strips may be faulty – this is not a firmware issue. | | Remote not working after flash | Re-pair IR receiver or flash the correct key mapping file (contact supplier). |