Hello, I am brand new to this site, and teaching myself the ins and outs of the android world, or trying to, lol. I am an iphone repair tech, and I wanted to learn more about Androids. I have a bunch of older Samsung Galaxy S series 6 and 7 models, and I am just messing around with them to practice and learn. I used the latest odin flash tool, which I have used many times before, and I flashed a few last night, and two of them are now having issues. I will start with the Samsung Galaxy S6 Edge. It is stuck on some custom firmware, and I cannot boot it into recovery mode. I have included pics. Any help is appreciated!!