[Kindle Fire General] isjonamon:
So, I've been up all night after buying this Fire trying to fix it, and I've decided to go along with my original decision to just return it. I'll rewind a bit to give you guys a play by play to show how I got to what I've determined is a FUBAR situation, and hopefully you guys can help me at least remove TWRP so I can return it without much issue.

If it's tl;dr, I bolded the main errors I got from the console and TWRP

1. I purchased my Kindle Fire from Best Buy with a 1 Year Protection plan, so in all reality, I could just break it in half and get a replacement, but I don't necessarily want a replacement.

2. I initially purchased it for my mom, but when I found out that the stock Fire OS didn't have Korean input or the option to have a Korean interface, I did a bit of research and started reading up on how to root, how to install the market, things like that. My mom's not a native English speaker, so this was an important thing for her, etc etc.

3. I read multiple guides on this forum and others, and rooted using the guide found here , since a few of the threads I was reading through seemed to point in that direction, and I had a bad experience with SOCR on my Droid X.

4. The root was successful, so I moved on and used KFU .3 to do the rest of the important bits; android market, etc etc.

5. Everything was working fine, but, after looking through it, I realized that it wouldn't work for what I needed it to, and I would have to return it, so, I attempted to unroot the tablet using TWRP's interface.

6. I cleared the cache, the devlak cache, and system wiped, then restored using the system restore point in the TWRP folder, figuring after that, the Kindle would boot up with stock OS and then I would just system restore the default way. This method got me stuck in a recovery-loop, and no matter what I did, the Fire always booted to recovery mode.

7. I figured I had bricked it, so I followed the steps in this guide, but always seemed to have problems at the step where I have to chmod 755 of the zergRush. I get "Not a directory" error, which after doing some research, I believe is on account of me no longer having rw privilege?

8. I looked around some more, ignoring that guide, and found a method to force-push the amazon update, but TWRP would no longer run the update, saying it could not Mount the SD Card due to an Invalid Argument, and I have yet to determine what that means.

9. After manually changing it to fastboot in an attempt to at least get it out of recovery mode, I have the Fire recognizable as a device in my ADB, but it is now stuck in a fastboot loop, and when I attempt to re-root it in order to give myself rw privileges again, it stalls on "waiting for device" and never gets past that point.

Update

I tried to reroot while the Fire was stuck in the Kindle Fire splash screen using the KFU tool, and used zergRush, but the error message I got was - exec '/system/bin/sh' failed: No such file or directory (2) - 4 times over.

What I think the problem is, is that when I wiped the cache/devlak cache/ and system reformatted, it wiped my SU privileges, and as a result, no longer allowed me to write the backup to the Fire, therefore leaving me in a perpetual state of limbo?

What I'm asking for from you is;

What can I do to fix this?

Is there any more information you need/want from me?

And finally,

Is there an easy way for me to remove TWRP from the system?

Thank you.