Ok, tried this on my solo2 with image of 1224, 1221, working box, no working cifs mount (creative, as it's my replacement hdd)
Tried flashing 1218 and 0128, both boot up to pli image, can login via ssh, no response on the screen. All images hang on 'UBIFS Update' while flashing. (first time waited 1 hour, afterwards didn't wait to long on it)
Tried flashing 1224 again, will let it run until finished or I'm fed up with waiting. I hope it finishes and reboots by itself, else I'll need to download the Doctor Who Christmas episode.