www.makemkv.com

I’m pretty sure make mkv doesn’t do this so this might be off topic however is there a way to change or remove region coding to region 1 or region free .iso/backup ? With or without software even outside mkv?

I found some links online but wasn’t sure how trustworthy since they all require downloads

On BluRays region lock is purely software related. So if you use e.g. VLC and set VLC to the specified region, your BluRay should play.

(https://i.imgur.com/87pFTmi.png if the picture isn't shown)