The TV turns on but hangs indefinitely on the Android or brand logo.
A stable power supply (a sudden shutdown during flashing can permanently damage the board). 3. Steps to Install (USB Method)
I can help point you toward the correct resolution file for your setup. Share public link
Ultimate Guide to TP.SK518D.PB802 Firmware: Free Download and Installation Guide
Files available on Softaawy include configurations such as 1GB RAM paired with 8GB storage and 1920×1080 resolution, as well as variants designed for 1366×768 panels.
This means the firmware successfully installed but uses a different panel map.