SG-1100 failed upgrade, stuck on Marvell prompt

[mloebl]

Upgraded a SG-11100 thru the UI and it never came back after an hour so. Checked the console and noticed it's stuck on a Marvell bootloader prompt:

>> FreeBSD EFI boot block
   Loader path: /boot/loader.efi
   Initializing modules: ZFS UFS
   Probing 4 block devices......* done
    ZFS found no pools
    UFS found 1 partition
Failed to read size of '/boot/loader.efi' ino: 138866
Failed to load '/boot/loader.efi'
panic: No bootable partitions found!
## Application terminated, r = -22
Marvell>>

Is there a process for reimaging it at this point? Any help would be appreciated, thanks!

[kiokoman]

https://docs.netgate.com/pfsense/en/latest/solutions/sg-1100/reinstall-pfsense.html

[mloebl]

Thank you!