Using firmware from a different Sharp model (e.g., LC32LE280M instead of LC32LE280X) can:
The Sharp LC32LE280X was alive, running on a portable, repacked heartbeat that the manufacturer never intended it to have. It was a messy, unauthorized, perfect fix. sharp lc32le280x firmware download repack portable
You would dump the SPI flash (usually a 25Q32 or 25Q64 chip) and then flash that dump into your bricked TV. This is effectively creating your own "repack portable," but it requires soldering in many cases. Using firmware from a different Sharp model (e