So we can assume that the problem is with NOOBS and some incompatibility with your board. My advise is burning a new openplotter NOOBS 0.10.0. Do the first install (I think it will work even with your board connected). Take the SD and put it into any computer and follow the instructions to force the partition boot.
autoboot.txt file should go into the unique accessible partition from another computer, the first one where the recovery system resides, not SETTINGS partition.
Thanks to you for testing.
autoboot.txt file should go into the unique accessible partition from another computer, the first one where the recovery system resides, not SETTINGS partition.
Thanks to you for testing.