I saw in a couple of videos in Youtube as well as a few pages in the internet that some Wismec Presa 75 owners had managed to change the firmware on their Presa 75TC for the much prettier looking one of the Joyetech Evic VTC Mini screen, but ALL pages and videos I've found so far that show this are in German, lamentably. So I wonder, has anyone here actually tried this, and if sol, has it worked well? Thanks, guys...