Kindle Fire HD 7" can't go past "Kindle Fire System Recovery" screen

[TheOnlyChicken]

Hello everyone! So about a month ago I bought my friend's old Kindle Fire HD. It worked perfectly fine. I decided to root it and install TWRP. Everything was working, until I turned off the kindle and turned it back on. It wouldn't go into TWRP recovery anymore, and was stuck in a bootloop. I ordered a fastboot cable, and it came yesterday. I tried to wipe it and reinstall stock Amazon software, and now it just goes to the system recovery screen with the red triangle and 2 options:
Either turn off your Kindle and turn it back on,
or factory reset it
I've tried both and nothing happens. I've tried using Kindle First Aide, but it doesn't download the boot, recovery, or system images. Please help me! I can provide any more information needed. Thank you!

 

[Rushead]

Does your fastboot cable work?

 

[TheOnlyChicken]

Does your fastboot cable work?

Yes, I can get the device to boot into fastboot. Also, I know it's being recognised because when I do the fastboot command to check if device is connected, the Kindle shows up.

 

[Rushead]

You should never revert to stock unless you want to keep it stock. I would have reflashed twrp initially. I'm not familiar with kf 1st aid.

 

[Red_81]

http://xdaforums.com/showthread.php?t=1951254

Use this to return to 7.2.3 and then reinstall twrp

 

[TheOnlyChicken]

http://xdaforums.com/showthread.php?t=1951254

Use this to return to 7.2.3 and then reinstall twrp

Oh my god thank you so much! I tried using this tool atleast twice, and didn't think doing it again would hurt. Thank you so much!!