From OpenPLi Wiki
How to flash the receiver...
Download a image from: https://openpli.org Unpack the ZIP file and place the content on a USB disk.
FLASHING THE RECEIVER.
- Unzip compressed file.
- Copy the folder to a USB Pen Drive.
- Power off or reboot the receiver. Connect USB Pen Drive.
- Power on receiver.
- You will be prompted on your TV screen to press and hold down OK button on your remote control to commence the flashing process. The flashing process will then commence and progress show on TV screen.
- Booting will start automatically once the flashing process has completed