Thanks Meter 500
Join Date: Feb 2013
Location: New Braunfels, TX
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You got very lucky, kindle fire utility is not meant for second generation devices, usually using it results in a hard brick. The correct way to update twrp is to grab the latest version's flashable zip from the dev section for your device and flash it from inside twrp and reboot. If you no longer have the blue logo and it is a 7" device you will need a fastboot cable, if you do have a blue logo or this is a 8.9" device you won't need a fastboot cable to fix, but you still need to get it into fastboot mode to reflash some partitions back to stock to fix this unless you get a blue logo in which case you could probably just flash the recovery but from what you said I'm assuming you don't get the blue logo anymore. And only the 8.9" models tend to be detected briefly while passing the bootloader.
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My Wallpaper Fix for KF2, KFHD 7", and KFHD 8.9" is HERE
Please Read the instructions and use the debugger if you run into errors.
My own modified adb drivers for just about all kindles (includes old twrp and cm versions) HERE
Tablet UI Patch for latest CM10.1 build HERE
Please send complaints to /dev/null