Press and on the TV keypad (not the remote).

Q2 2024 Firmware Compatibility: Hardware rev 368 (P75-368A/B/C) Update Type: Minor release (feature + security)

No. The flashing process requires a USB 2.0 drive with a capacity between 4GB and 8GB, formatted to the FAT32 file system. Using a drive that does not meet these specifications is the most common reason for flashing to fail.

: You must source the exact original dump file and flash it using an RT809H or CH341A hardware programmer tool directly to the board's flash IC chip.

If you are currently troubleshooting an installation, let me know:

Technicians often encounter software-related failures with these boards, particularly "Logo Hang" or "Bootloop" issues.

The software can often be toggled between 1366x768 and 1920x1080 to match the specific LCD panel being used.