[Kindle Fire Q&A, Help & Troubleshooting] Thepooch:
If your main intent is to flash a ROM no need to root simply just allow installation from unknown sources under device in your kindle settings when you plug it it disconnect the USB transfer app. Then select option for twrp it should reboot then swipe open and stop USB app again this time send fff. Then use the boot loader to enter recovery when there select backup make a backup that you will later name noroot631 without spaces after you have created a backup reboot to os then use the USB app to place a ROM zip and a gapp zip on your SD card but do not place it inside of a folder this is considered the root of your sdcard then boot back into recovery . Go to install make sure you can locate the files you intend to flash then use the back button or home button in upper right to return to twrp main screen. At this point you have a safety net and a backup and you are getting familiar with the functions and learning how to navigate in twrp. Now for a flash if you are gonna flash modaco for the stock like adventure its not required to perform any wipes just simply flash and reboot. No gapps required either now you are rooted:-) If you intend to flash a different flavor like cm7 cm9 or jelly bean it gets a bit more technical . After placing ROM and appropriate gapps on your SD card this time your gonna wipe and its very important you do so!!! First go and wipe factory reset then wipe cache then wipe dalvik here's the scary part wipe system do not reboot you have no system!! There is no need to wipe sdcard or external storage as it is called in the new twrp if you did you would have nothing to flash:( then hit the home button above right taking you back to the twrp main screen this time select install tap on the ROM zip swipe to install then home again install again this time select gapps swipe to install select reboot and system if prompted. It will reboot initial boot takes time I would say 5-8 mins longer and then you need to be a little alarmed If your greeted by an android for account setup your good congrats your rooted. If boot takes longer than 10 mins hold power button return to recovery restore your backup after the wipes I mentioned above try again later with new ROM and new gapps. Good luck as for kfu awhhh so many things broken for so many people near impossble to say why so many fail to root frankly operator error accounts for at least 80% of failures could be more like 90% . Common mistakes thinking you need to root to flash a ROM, bad drivers windows is terrrrrible,wrong cable,using a 3.0 USB port instead of 2.0, and general miscommunication between the device your computer and the utility. Whewwww all that said install twrp install fff if you can 100% verify that you have both and you know how to use both and move files to your SD card and have made a backup every time before you flash. Then flash Awaaaayyy!!! Hope I didnt miss anything oh and the usual disclaimer know what your doing or you shoot your eye out lol and of course I'm not responsible if you brick your kindle!! Good luck

---------- Post added at 10:57 PM ---------- Previous post was at 10:55 PM ----------

Ohh and if you can't read that I'm sorry for the novel punctuation and such costs more :-)

---------- Post added at 11:11 PM ---------- Previous post was at 10:57 PM ----------

PS as well after creating the huge safety net I explained above go ahead after your backup and select permanent root with superuser you have a backup and a bootloder that resets your boot mode have it but IMO that function is broken for too many people these days :confused: I don't recommend it because if our gonna flash a ROM all ROMs are rooted so what's the point?