If the web interface is stuck in a boot loop:

Turn the TV off and unplug it from the wall. Insert the USB drive into the "USB 1" port.

Continue holding the button until a "Software Updating" progress bar appears on the screen. Release the button and wait. The TV will automatically reboot once finished.

Last updated: October 2025. This guide is crowd-sourced from repair logs and ISP engineering documents. Always cross-check with your device’s specific datasheet.