TP.SK706S.PC822 is a popular Chinese universal TV mainboard (chassis) used in a variety of LED/LCD televisions from brands like LEFF, Vityaz, and Erisson. Repacking or updating the firmware is typically done via USB to fix boot issues, software bugs, or to adapt the board to different screen panels. Firmware Repacking & Installation Steps
The string tpsk706spc822 does not correspond to a mainstream consumer device (like a smartphone or router). Instead, it strongly suggests a : tpsk706spc822 firmware repack
Initial analysis of a stock tpsk706spc822.bin reveals a multi-section layout common in embedded Linux systems: tpsk706spc822 firmware repack