Originally Posted by mshahjamali
I have similar problem. My first trial of rooting Kindle 1st gen was not successful and now I cannot do anything because the Supersu can't be removed even after factory reset and now it does not work with any other rooting method. How can I remove supersu from this tablet?
If i can remove that , all my problem will be solved and I can install a custom ROM. I really appreciate any help. Thank you.
Several pieces of advice here:
1) This section/thread is specific to the HTC One (M8). Each Android device has it's own specific nuances and differences. Following advice intended for other Android devices is not the best idea, and may even result in damage to your advice. It's best to get specific advice in your specific device forum.
I can give some general advice (below) but again, it's best to seek advice from those experienced with your specific device:
2) You also seem to be confused about that a "factory reset" means. All a factory reset does, is wipe user data (apps, settings, etc.). It actually doesn't magically restore the ROM, or even touch the partitions associated with the ROM (system and kernel). And root is achieved on a system/kernel level. Since a factory reset doesn't touch those partitions, it is therefore not the proper way to unroot.
There are a number of possible ways to unroot, but again you should seek specific advice form other Kindle owners. Typically, you can restore a TWRP backup of the stock ROM, which you should always make before
you root. Alternately, SuperSU (depending on the version) has the ability within the SuperSU app itself to remove root (unroot). Another alternative, is that there may be official stock recovery images available from the manufacturer, that will allow you to return to stock (and therefore unroot).
3) You need to properly unroot before you can try another root method. That is a pretty universal rule of thumb, and should be expected.