The filename indicates that this is the of a multi-part RAR archive. To use it, you must have all parts (e.g., part1, part2, and part3) in the same folder before extracting. Once extracted, you will typically find a .img or .bin file, such as allupgrade_aml950d4_an13_8G_1GB_70.img . How to Install the Firmware via USB
: This part of the filename seems to be a product or model identifier. "TP" could stand for a company or product line (perhaps "TechPro" or a similar abbreviation), "SK513S" might be a specific model or product code, and "PB802" could represent another product or variant specification. TP.SK513S.PB802 1920x1080-1G-8G-ONVO-USB.part3.rar
Do not turn off the power until the process is 100% complete, as this can "brick" the motherboard. Troubleshooting Common Issues The filename indicates that this is the of