FriendlyARM NanoPi M4 RK3399 not booting

Hi,

I'm trying to install LibreElec on FriendlyARM NanoPi M4 RK3399 but I'm not seeing anything boot.
When powering the device nothing happens - no LEDs, no HDMI output.
I used the official release from https://releases.libreelec.tv/LibreELEC-RK33…anopi-m4.img.gz ( I went a couple of releases back as well -no change).
via LibreElec USB Creator.

I am certain that the device is functional - it was running Armbian just before and I've also successfully installed DietPi.
Help is appreciated!
Thanks in advance

I managed to solve the problem by:

- installing libreelec 10

- (optional) upgrading to libreelec 12 by placing the img.gz in the update share