Yeah, that’s the third option i was referring to.
There are a few youtube videos explaining how to do that too, but i rather do it via a Sim. But if i have to, that might be the last resort.
Rebel and Gevey are two of the most commonly referred to unlock sims. It’s basically a paperthin sim circuit, you place that in the tray first, then your sim card on top of it, insert sim tray in the phone, power on and it should now work on the sim card (any sim card).
Lets see if it actually works… 
Had no luck with Gevey Plus2 so far…