Firmware updates are typically used to fix "boot loop" issues (hanging on the logo) or software glitches. : Use a FAT32 formatted USB flash drive.
Due to the generic nature of this board, a TP.MS3458.PB801 or TP.MS3458.PC756 service manual will be 95% identical to the PC757. Only the panel timing and firmware differ.
Here’s what you should know and how to find a helpful article/manual: