I tried playing around with that information, hoping to enable SSH on the original firmware.
- mount -o remount,rw /wd_config
- touch /wd_config/enable_root
Next I took sshd from Debian Buster (ARM64) and placed it on a USB drive together with my SSH public key (id_ecdsa.pub) and an SSH host key (ssh_host_rsa_key).
Unfortunately later on, there is a step fw_verify which requires some certificate (sshd.cert).
Conclusion
Without a USB rescue or a serial connection we currently cannot touch the enable_root on the config partition.
We currently don’t have a valid certificate file to show (any certificate would do, if you happen to catch one during OTA…)
