: While the TV is unplugged, insert the USB. Press and hold the Power button on the TV itself (not the remote) while plugging the TV back in to trigger the update process. Recommended Support Channels
: Firmware for the H43N5300UK (a UK model) is typically found on Hisense Global or local European support pages rather than the US site. Download RSAG7 820 7454 Hisense H43N5300UK part03 rar
If you have the from the sticker on the back of the set? Hisense Firmware Downloads & Updates | Support : While the TV is unplugged, insert the USB
