For the adventurous there are in fact some other options:
- flashing the
devinfo
partition using EDL mode, see Fairphone 3 unlocking without oem unlocking - trying to MITM the requests to the unlock server and faking a correct response as described here: /e/ OS Q (Android 10) for FP3/FP3+ - #14 by _tmp
(When I looked into the android 10 unlock code a few month ago it did not verify that the ssl certificate matches the hostname which is indicated by the not really correctWARNING: Hostname is not matched for cert.
entry in the log)