Finally managed to do this. It wouldn't flash SailfishX for me saying the android version was wrong, so I reflashed the image you shared, booted into android, and then shutdown and repeated and it worked fine.

Brilliant! All the worries about having to find a Windows PC seem unfounded



As for the network issues, there was a post on another thread where the user reported that leaving the phone in Airplane mode before flashing SF resulted in the SIM services being inoperative. Is this the case here?