Folks,
Thank you all for the support and the help.
I finaly managed to install the latrest updated image of OpenPli.
I leave you here how I managed to do it on my Zgemma H8.2 box:
1. Download the latest image onto a FAT32 USB stick and extract it on the root folder.
2. Shut down the box - using the power button on the back of the unit. - Use the hardware button NOT the power button on the remote.
3. Plug in the 32FAT USB stick with the image in it.
4. Press the MENU key on the remote and keep pressing it all the time.
5. Power the unit back ON again using the same power button on the back of the receiver
6. When you see the first image when powering up. STOP pressing the MENU button (release it).
7. The box will automatically update the image.
I wasn't releasing the MENU button, and the box wasn't updating... - this was my error.
To you all thank you for the suggestions and help.
Much appreciated,
MifPT