DUring a fresh install of Debian buster recently, I went through the armbian-config setup, which finished with "install a whole lot of package updates, and update the boodloader." Since I've rebooted from that, the board no longer boots.
It's been a while, so I have unfortunately forgotten the details of what actually happened. I didn't expect that set of updates to change anything in the firmware, only the OS and u-boot on the MMC-card.
The board powers on, attempts to boot from the MMC and then bails.
This is the error log: (slightly trimmed)
I've tried several different MMC cards. I've tried booting from SPI, SATA and UART, all with various forms of failure.
SATA & SPI also give bad header messages.
UART just never seems to do anything - there don't appear to be any functional docs for this recovery method.
What's next? This board is currently a heavy (and hot) paperweight.