Europe. Bought from eBay. Can't use thermal camera as no myflir app in either fresh install or install copied from previous phone.

Can somebody link me to the app or rom?

Are you sure you have the pro version ?
Check Settings > System > Advanced > About Phone

The app is just a rebranded cat61 app, you can try https://play.google.com/store/apps/deta ... flir.tiger
The full ROM is available here viewtopic.php?f=285&t=532354