So...about a month ago, I went out and bought a shield tablet (one of the newer editions). It works fine and all, but rooting it required a bit more than running kingoroot or a simple PC program. I quickly found this guide, but only yesterday came around to do most of the steps (good thing: I've barely used the tablet, so I don't mind if programs and settings are gone). Things went fine until step 8 of the root procedure (meaning: 'minimal ADB and fastboot' finds the tablet just fine and its bootloader is unlocked). For some reason, it just didn't boot to the twrp, even though the installation commands said all was fine. So I started digging on the internet, and found that my tablet could be newer than that, and/or there is a more recent twrp that worked. Oh, and USB3.0 isn't the best way to go with this. So I found this page and went with instructions given there (which were identical, except of course a more updated twrp-image). This worked to boot into TWRP (which apparently stands for Team Win Recovery Project...and shows my knowledge on this field ). At this point I decided to install supersu to the system, in accordance with the first guide (if that wouldn't work, I could still go with phh's superuser based on guide #2). However, I found out that rebooting into system just brought me back to the TWRP menu. And that's where I'm currently stuck. After about an hour of trying to get into twrp, I now find myself unable to get out. Booting to the bootloader works okay, but no matter what further option I choose (restart, continue or recovery) I always end up in TWRP. Since it sometimes shows a fallen droid with open belly and exclamation mark on it, I assume I screwed up something (perhaps the installation of supersu?), but I'm currently unaware how to fix things exactly. Does anyone here now? eg. how to (again) use the stock rom to install over the current system? Thanks.