I'm loading the original software into the Dreambox release-dm7020hdv2-4.1.0, which works fine. Now I'm going to turn off the receiver. Then put it in a stopmos and load your software.
OpenPLi 9.x: http://openpli9xstar.japhar.net/OpenPLi9xstar/
The software is now loaded. The screen is restarting. Now I'm waiting to see if it continues booting. It can take a while. I'm waiting patiently... the box shuts down again. It restarts... but unfortunately, this didn't help either.
Now I've installed a different version of PLI 12.3. and with that, the Dreambox 7020v2 boots normally again.