This is getting stranger by the minute.
All of a sudden the abovementioned development version has also started having the same (re)boot failure issue.
I am doing all testing on this device booting from different SD cards.
Just to be sure, I also explicitly updated to the abovementioned development version by putting the .img file and corresponding device tree file in the update folder and rebooted, but still reboot failure issues. I even reflashed using the toothpick method using the abovementioned development version. And still reboot failure issues ???
The only difference between now and a few days ago when I executed as much as 20 successful consecutive reboots using that development version, is that yesterday I updated the bootloader on the device as suggested by someone else in this thread. My device was running 1.07L Android firmware from NAND and I updated just the bootloader with the bootloader from the 1.05L Android firmware as suggested (without seeing any noticeable effect ).
Should I anyhow upload the development version, or? If yes, how should I upload it?
[hr]
After applying second test kernel, there are still the same reboot failue issues.
After applying the second test kernel, I was able to soft reboot (from LibreElec menu) the device 5 times in a row and then the 6th got stuck on the Beelink Bear logo.
The 1st cold reboot thereafter (unplugging and replugging power) failed, as well as the 2nd, 3rd and 4th. The 5th cold reboot attempt succeeded, but then the first soft reboot attempt therefafter failed.
(NOTE: I am using 2 different SD cards to boot from when testing the different versions. 7.0.3.10-development versus 7.0.3.11 )