I decided to play around with some things in minecraft, just to see what I could do. I switched folder names of texture packs I wanted to use with those that are unlocked by default, and am now able to use and save with the ones I want. This of course makes the ones that were unlocked by default read as a trial pack, telling me that I need to download it. Is there a file that can be altered so that the DLC packs will be read as already unlocked? Is it possible to unpack, edit and repack different texture packs, allowing for custom texture packs?