I spent a bunch fo time yesterday trying to get the 2.799 release to work on my existing Raspberry Pi 3B+. From what I can tell, 2.799 is just not bootable on that hardware.
I started with the in place upgrade which would not boot. I then re-imaged the SD card multiple times without success. I tried to a new SD card and had the same result.
I imaged the SD with 2.779 which did boot. I then tried the upgrade again and it would not boot.
I attached the Pi to a monitor and there’s no bios/boot output at all.
I would appreciate any help. Also, let me know if there are other steps I can take to help debug.