[Kindle Fire Q&A, Help & Troubleshooting] Jeffjb:
I have a KF1 I had bought off ebay to try to repair so I know I was pretty much throwing money away but it was a rather cheap buy so I went ahead and bought it. The condition was stated "Freezes" but overall physical appearance was near mint.

On receiving the KF it would not power up, no power light, no logo, no nothing. So I plugged it in let it charge for a while. Still no light or any response from hitting or holding the power button. So I thought maybe it has a bad usb connection/battery. Took it apart and got my Multimeter out and measured voltage at the battery. 3.7V while plugged in. Took the battery out and measured voltage at the charge port solder connections, can't remember what the reading was (3.7 - 4.1 ?) but I knew the port was undamaged anyway. Pulled out my factory cable and plugged it into my computer. Still nothing. No signs of life at all.

At this point I went and did some research and found the "Firekit LiveUSB kit 1.1" followed instructions and after several attempts finally got it to boot into recovery by shorting usb bootmode trick and using the "usb_fix_parts_and_install_fff_twrp" script. However I could not do much else. It would not mount anything. No sdcard, no cache, no system, no nothing.

I did some more research and found the How To thread for fixing failure to mount xxxxx. Followed those steps but nothing worked. when trying to run parted on /dev/block/mmcblk0 it would always say "unable to stat device" or something like that. I could not do much with the recovery that was loaded with the firekit either so I thought I would download the newest recovery and try that with the "usb_fix_parts_and_install_fff_twrp" script. Once I got a newer recovery up I could use the file manager and look inside /dev/block/. There was no mmcblk0 in there at all. all that was there was a bunch of "loop" files and "ram" files. nothing else.

I did some more research and found the EMMC curruption fix by Hashcode. Tried running that several times but would always have problems using the mmc_utils. It would always hang. I thought I would try anyway to leave the mmc_utils vendor 0 and vendor 4 commands running for 5 minutes each and continue with the next steps. Moving from the next steps in that forum I was not able to get into recovery. it would always stay at the TWRP splash screen (although ADB commands would still work).

At this point I was ready to give up. I shut everything down pulled the battery out and was looking to see if I could find any info on the motherboard. When I put the battery back in it booted up the kindle and got stuck in a bootloop of the Yellow triangle (FFF) then kindle logo. Before this I always had to do the usb boot shorting method to get it to boot, so at least I'm getting somewhere. I then used fastboot commands to perform oem format and flash the xloader, fff1.4a bootloader, and recovery. succeeded on all of those so I thought I had got it working. Rebooted device and it would get to the FFF1.4a blue kindle logo, I could then hit the power button and select recovery. Unfortunately it would just sit there and not do anything.

I rebooted the device and did the fastboot command to boot the recovery image. Stuck at TWRP splash just like before. Rebooted device again and this time used fastboot commands to flash recovery followed by boot the same recovery image I just used to flash the recovery. Success! was able to get into TWRP. But I'm still stuck! lol. Can't do anything with it since it cannot mount any partition. mmcblk0 or any other partition does not exist in /dev/block/. Can't even mount the sdcard yet somehow adb push xxx /sdcard works and I can view sdcard inside the file manager in recovery. Can't wipe anything, can't install anything. Always get errors. I was able to copy recovery log to sd card from the advanced menu and pull it to my computer with adb pull.

So as to the reason I'm posting this. What now? lol. I'm at a loss for what to do.