Moved an app to system and stuck on bootloop

basically I moved a mock locations app to system files and when i rebooted its forever stuck on bootloop

so i flashed twrp through odin and deleted all data but still nothing works

so i think i need to reflash original firmware - my model sm-N920I - but there is no firmware on sammobiles

I live in the UK. I found some australian ones tied to some network - can I still use this or is there any better option?

thanks.