Following advice from Philips Support , Arthur realized he couldn't fix this through the menu—he had to perform a manual "re-load".
Switch off the TV using the power switch, wait 30 seconds, and turn it back on with the USB inserted. philips tv software upgrade application q5481
| Issue | Solution | |-------|----------| | TV doesn’t enter recovery | Try a different USB port. Ensure file is named autorun.upg . Hold button longer (up to 20 sec). | | “No update file found” | USB must be FAT32. File must be in root directory. Redownload the correct region version. | | Upgrade stuck at 99% | Wait 30 min. If frozen, unplug power for 1 min – TV may roll back. Then retry. | | TV keeps rebooting after upgrade | Perform a factory reset: Settings > Device Preferences > Reset . | Following advice from Philips Support , Arthur realized
Go to the Philips Support website and enter your TV model number. Locate the section. Ensure file is named autorun