You must source the specific firmware from the seller or authorized distributor to match the 2021 hardware revision. Technical Specifications Model Input Signals DVB-T2, DVB-C, DVB-T, ATV (Analog) Resolution Supports up to 1920 x 1080 (HD) Panel Voltage Adjustable: 3.3V, 5V, or 12V Interfaces HDMI, VGA, PC Audio, AV In, USB Firmware Installation Procedure Updating this board requires a manual flash via USB: Format a USB drive to FAT32 .
If you are working on a custom build right now, tell me: What is the ? I can help you confirm its native resolution and correct drive voltage before you begin flashing. Share public link rr52c03a firmware 2021
If your display turns on but the colors appear washed out, distorted, or negative, the board is working but requires fine-tuning. You must source the specific firmware from the