[Kindle Fire Android Development] RazorChrist:
Okay guys, I got the drivers setup correctly, finally. So now I run option 2 to install Perm Root w/ SU. It's not getting stuck on the "waiting for device" at the end, it actually does reboot back to normal bootmode. But it doesn't appear to be installing twrp or fff. After it booted back up normally, I have the SuperUser app and I can run it just fine. Looks like it's working. Should I proceed with Option 3 on KFU or should I manually try installing twrp/fff? Here's the entire output of running Option 2 in KFU:

find: /I: No such file or directory
find: bootmode: No such file or directory
***********************************************
* Installing Permanent Root *
***********************************************

***********************************************
* Activating Fastboot (4002) *
***********************************************

4988 KB/s (510876 bytes in 0.100s)

The kindle has been told to reboot in Fastboot Mode.

twrp.img is missing.
So we will download it for you!

find: /I: No such file or directory
find: twrpurl: No such file or directory
find: /I: No such file or directory
find: twrpmd5: No such file or directory
tools/cat: write error: No space left on device
wget: missing URL
Usage: wget [OPTION]... [URL]...

Try `wget --help' for more options.
Cannot open input file recovery\twrp.img
Download successful.
fff.bin is missing.
So we will download it for you!

find: /I: No such file or directory
find: fffurl: No such file or directory
tools/cat: write error: No space left on device
find: /I: No such file or directory
find: fffmd5: No such file or directory
tools/cat: write error: No space left on device
wget: missing URL
Usage: wget [OPTION]... [URL]...

Try `wget --help' for more options.
Cannot open input file recovery\fff.bin
Download successful.

***********************************************
* NOTICE *
***********************************************

find: /I: No such file or directory
find: twrpmd5: No such file or directory
tools/cat: write error: No space left on device
find: /I: No such file or directory
find: fffmd5: No such file or directory
tools/cat: write error: No space left on device

Fastboot uses a different device than ADB.
You should check device manager for "Kindle" or "Amazon"

If you see it, rerun the driver installer that came packaged with KFU.

Installing FFF...

Cannot open input file recovery\fff.bin
error: cannot load 'recovery\fff.bin'

Installing TWRP...

Cannot open input file recovery\twrp.img
error: cannot load 'recovery\twrp.img'

Setting Recovery Bootmode.

< waiting for device >
... OKAY [ 0.202s]
finished. total time: 0.202s
rebooting...
finished. total time: -0.000s

Please wait...

<idme> Invalid permission
Usage: mount [-r] [-w] [-o options] [-t type] device directory
failed to copy 'files\su' to '/system/xbin/su': Read-only file system
Unable to chmod /system/xbin/su: No such file or directory
Unable to chmod /system/xbin/su: No such file or directory

Attempt to remove root checker.

failed on '/system/bin/check_rooted' - Read-only file system

Please wait...

Installing Superuser.apk
pkg: /data/local/tmp/Superuser.apk
Success

***********************************************
* Root Installed *
***********************************************

Permanent root has been installed.
With great power, comes great responsibility.

Please be careful with how you use root.

Press any key to continue . . .