PAL ATV stands for the analog tuner system (Phase Alternating Line) and indicates this is the standard TV software version rather than a digital-only variant.

The file is placed on a FAT32-formatted USB drive.

You may find listings on Software Zone which specifically mentions the P130-338 V6.0 USB-updatable firmware. How it is Used

Because these are technical repair files, they are usually hosted on specialized technician forums or software repositories:

Sites like Fórum Diagramas or Monitor.net.ru often host these .rar archives for technicians to download via a subscription or points system.

The .rar file is extracted to find a file usually named allupgrade_338_4G_sos.bin or similar.