Installing Sailfish X on Sony XA2 that had a locked sim

Hi,

I was wondering when new Sailfish hardware with reasonable size ala Xperia X will be available. As fallback I was looking at some used XA2, but all I could find were with locked sim. Of course the provider can unlock them, however I do not remember correctly if there was an issue flashing them.

I already shipped back one I bought new, because I could not flash and there was no time to experiment further.

So what is your experience and advice