for the update progress bar to appear on the screen. Do not turn off the TV during this process.

HV430QUB-N4E or HV430QUB-N1A (depending on the specific version)

Software for this board is typically hosted on specialized technical forums. You can find firmware versions and discussions on: KenotronTV : Often hosts the exact USB firmware for this TP.MT5522S.PC822

The text you are looking for relates to the for a Polarine 43PU11TC-SM

Remont-aud.net : A common source for "dumps" and USB update files for technicians. ⚠️ Critical Installation Warning

Updating firmware is risky and should only be done if your TV is stuck on the logo, restarting, or has software bugs.

all parts of the RAR (including Part 07) into one folder. Copy the .pkg file to the root of a blank USB drive. Unplug the TV from power. Insert the USB into the TV.

If you need the of this file or a different panel version , I can help you search for those specific links.