Because these printers use similar chipsets (typically 32-bit ARM Cortex or proprietary Chinese SoCs), the firmware files are often interchangeable or specifically labeled for both models.
If you still cannot find the firmware file, contact your original seller on Alibaba/Aliexpress with the subject: "Request: Firmware binary for TP SK706S PC822 (PCB version X.X)" . Most respond within 48 hours. tp sk706s pc822 firmware download
Wait for the update to complete (do not power off). The TV will restart automatically. Disclaimer Wait for the update to complete (do not power off)
If you want, I can:
Powerline firmware updates are high-risk. Do not update unless the device is completely non-functional. Do not update unless the device is completely non-functional
TP.SK706S.PC822 is a 4K intelligent WiFi TV motherboard commonly used in various TV brands like Asano, Polarline, BBK, and Vityaz. Finding and installing the correct firmware is critical for repairing "stuck on logo" or "boot loop" issues. Firmware Download Sources