Develop Bugs

Stuck in boot loop after failed root.

i was curious to get get android market on my kindle today.. and looked up how. i used the kindle fire utility to root it. then my KF it started to go into a loop of the boot logo. it just flashes on and flashes off over and over again.hard reset doesnt affect it at all, it wont even turn off unless i unplug it. it doesnt show up on my computer either.
i dont know if this helps but when i ran the Kf utility it said 'findstr' not recognized.. blah blah blah. and it didnt give me the 1234567 options on there. i just typed in '2' and pressed enter because thats what the video told me .-. it doesnt have a triangle, or a blue screen logo either just the kindle fire logo flashing off and on. I honestly am lost. please keep this noob friendly
i am running win 7. 64 bit.

josepho1997 said:
It seems like your stuck in fastboot mode. You need to reinstall the drivers manually and then go into KFU. Press 1(bootmode)and 1(normal). If you still want to root it, when it gets to installing fff, and if it says <waiting for device>, you need to do a hard reset and your Kindle, unplug, plug it back in, and manually install the drivers. Then it will finish rooting.
Click to expand...
Click to collapse
How do you reinstall the drivers manually? and also when i go into the kindle fire utility it doesnt give me 1,2,3,4,5,6,7 options... it just says findstr is not a recognized as an internal or external command, operable program or batch file. and another thing i tried another utility on here and it said it said my device was not found when i plugged it in , is it because it turns off every 5 seconds?

First before you mess with your drivers shift+ right click on the tools folder in kfu select open command window here power your device off completely leave it unplugged type fastboot -i 0x1949 getvar product when it says waiting for device plug in your powered off kindle it should then power on in fastboot mode if you get the response product: kindle then type fastboot -i 0x1949 oem idme bootmode 4000 it will say okay hopefully the type fastboot -i 0x1949 reboot it should then reboot in normal mode
Edit: hit enter after each command

zellerax said:
How do you reinstall the drivers manually? and also when i go into the kindle fire utility it doesnt give me 1,2,3,4,5,6,7 options... it just says findstr is not a recognized as an internal or external command, operable program or batch file. and another thing i tried another utility on here and it said it said my device was not found when i plugged it in , is it because it turns off every 5 seconds?
Click to expand...
Click to collapse
Sounds like there's some sort of PATH problem with your setup, which is why KFU won't work properly. You'll have to manually use ADB/fastboot commands if you want to get things done.
About it turning off constantly, it's probably out of battery. Use the stock wall charger (it provides a greater power output, don't bother with USB or a random clone) so it can refill some. The bootloops may be due to a bad boot mode, but it's a bit hard to pinpont with your description of the issue.
You may want to have a read here, it'll help you to better understand what's going on and how to express yourself about the problems you are experiencing: http://forum.xda-developers.com/showthread.php?t=1552547

zellerax said:
How do you reinstall the drivers manually? and also when i go into the kindle fire utility it doesnt give me 1,2,3,4,5,6,7 options... it just says findstr is not a recognized as an internal or external command, operable program or batch file. and another thing i tried another utility on here and it said it said my device was not found when i plugged it in , is it because it turns off every 5 seconds?
Click to expand...
Click to collapse
You might have corrupt drivers. Here's how to reinstall them:
Try going to your Control Panel >> Device Manager. If you see an entry for "Android Phone," (Android ADB interface) delete it (and any associations with Portable Devices >> KF or Kindle Fire).
Restart computer.
Then go to your KFU utility folder, open "install_drivers.bat" (right-click "Run Administrator"). This shouldn't take long at all.
You might want to restart here too after.
Then open KFU utility, plug in Kindle - if all went well here, you should read something along the lines of "Online" and "4000".

I am a similar situation
Hi Guys,
I rooted my KF with no issues, was able to copy the Jellybean and Gapp zip file to the SD and thought I flashed with no issues. Then rebooted. Now the KF is stuck in a boot loop. If I boot to recovery, that works and allows me the recovery options. if I boot up to normal, it constantly reboots, if I boot to fastboot, it displays the Kindle Fire logo and says "press power button to boot menu" at the bottom and does nothing else. My computer recognizes it as Android ADB interface but will not allow to access the SD ram. Any help would be greatly appreciated.

It's usually better to start your own thread here on Q&A.
Are you able to access the SD Card from TWRP? (Mount USB)
If so and the ROM is still in there, wipe cache, dalvik-cache, factory reset and system, then flash/install the ROM again (don't install gapps yet) and reboot. If it boots all the way to the desktop, reboot to recovery and install gapps.
You may also want to check the ROM's hash.
You haven't mentioned what versions of TWRP and FFF do you have, either. Hopefully 2.1.1 or 2.2 for TWRP and 1.4a (blue "fire" on the kindle fire logo) for FFF.

Dasanko said:
It's usually better to start your own thread here on Q&A.
Are you able to access the SD Card from TWRP? (Mount USB)
If so and the ROM is still in there, wipe cache, dalvik-cache, factory reset and system, then flash/install the ROM again (don't install gapps yet) and reboot. If it boots all the way to the desktop, reboot to recovery and install gapps.
You may also want to check the ROM's hash.
You haven't mentioned what versions of TWRP and FFF do you have, either. Hopefully 2.1.1 or 2.2 for TWRP and 1.4a (blue "fire" on the kindle fire logo) for FFF.
Click to expand...
Click to collapse
Thanks for the info and sorry for the incomplete initial info. I will check this as soon as I get home and can work on it again.

Thanks for your help. It turns out that I didnt even have TWRP installed. Thats fixed. I was able to get roms installed and have different problems. (Will start a new thread in another area) Thank you very much for your help.

[Q] Kindle flashing and factory software

Hi everyone, I have two kindle fire, I messed with both of them.
I've root them the first one has the problem with the yellow triangle logo stucked. And the other one I've tried to reset it to the factory settings and everything was cool until I hit the TWRP utility and I think I erased everything.
I've see tons of posts regarding rooting and troubleshooting related to rooting and i'm pretty sick of rooting, I think that 3 months is sufficient time, please DON'T POST anything related to rooting.
I'm here asking if anyone knows how to flash all the data ofthe kindle from the pc and been able to install the factory software, firmware (I don't know) from scratch from my pc. Anyone, please?

The first one is probably stuck in fastboot. Try giving it a go with "fastboot oem idme bootmode 4000 && fastboot reboot".
For the second one, "I think I erased everything" is as descriptive as not wanting people to post about your procedure is helpful. What exactly is going on with it? For future reference: http://forum.xda-developers.com/showthread.php?t=1644970
You should also update both FFF and TWRP on both devices once they are working normally.

If i may suggest flashing modaco first after a good wipe everything except your sdcard I believe this will make a smoother transition if you desire to return to stock before returning to stock always do a good wioe to remove remnants of previous roms download the latest stock bin and rename it to update.zip do not place it in any folder just at the root of your sdcard flash in twrp this will also wipe out twrp and fff I really dont recommend doing this lots of people fail at doing the procedure correcty modaco is stock with only the market added try this approach first then you can retain fff and twrp for custom backups.

Ok, so, I've been investigating and what I'm really looking is to erase ABSOLUTELY everything from the kindle sdcard, system, etc, everything. And I'm looking for a method to sideload from the pc the orginal stock ROM of Kindle Fire. Any clues, directions? Any fully functional software?
I really, don't want to try the adb commands (I've tried them before), nor follow any tutorial about root troubleshooting.
I'm really sick of them and of all that mal-functioning software that you have to download(Eg. Not-responding superOneClick, kindleFireUnbrickUtility saying in one line <No device found> <Processing something> <Congrats, your kindle is good to go! (When it's not)>, Eternal loading Android Commander)
With all due respect I DON'T want any more of those, as I said, 3 months is sufficient time, I feel so frustrated.

jRam90 said:
Ok, so, I've been investigating and what I'm really looking is to erase ABSOLUTELY everything from the kindle sdcard, system, etc, everything. And I'm looking for a method to sideload from the pc the orginal stock ROM of Kindle Fire. Any clues, directions? Any fully functional software?
I really, don't want to try the adb commands (I've tried them before), nor follow any tutorial about root troubleshooting.
I'm really sick of them and of all that mal-functioning software that you have to download(Eg. Not-responding superOneClick, kindleFireUnbrickUtility saying in one line <No device found> <Processing something> <Congrats, your kindle is good to go! (When it's not)>, Eternal loading Android Commander)
With all due respect I DON'T want any more of those, as I said, 3 months is sufficient time, I feel so frustrated.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showpost.php?p=25730666&postcount=2
Read from "Reverting to stock software". You can manually rename the file and then copy it into the KF instead of using ADB for it, just make sure the extension is .zip and not .zip.bin (Windows hides extensions per default settings).

jRam90 said:
Ok, so, I've been investigating and what I'm really looking is to erase ABSOLUTELY everything from the kindle sdcard, system, etc, everything. And I'm looking for a method to sideload from the pc the orginal stock ROM of Kindle Fire. Any clues, directions? Any fully functional software?
Click to expand...
Click to collapse
To restore back to full factory
1. Download Kindle Fire Software Update Version 6.3.1
2. Rename the file to update.zip
3. Get in to TWRP and mount USB drive
4. Copy update.zip to Kindle Fire
5. Unmount USB drive
6. Do factory reset, then wipe system cache, and dalvik cache
7. Flash the update.zip
8. Let it bootloop about 3 times or so...
If you want FFF and TWRP then flash Stock 6.3.1 Basic from TWRP. This has no root or gapps.

Dasanko said:
http://forum.xda-developers.com/showpost.php?p=25730666&postcount=2
Read from "Reverting to stock software". You can manually rename the file and then copy it into the KF instead of using ADB for it, just make sure the extension is .zip and not .zip.bin (Windows hides extensions per default settings).
Click to expand...
Click to collapse
When trying to execute the adb shell commands all I get is:
- exec 'system/bin/sh' failed: No such file or directory (2) -
I've also tried, fastboot update | flash | boot | flash:raw
This is with one kindle, with the other one, I can't even get the PC to recognized it as a USB
Is there any tool, that really erases everything and take the stock ROM to be installed again? Software, script?

jRam90 said:
When trying to execute the adb shell commands all I get is:
- exec 'system/bin/sh' failed: No such file or directory (2) -
I've also tried, fastboot update | flash | boot | flash:raw
This is with one kindle, with the other one, I can't even get the PC to recognized it as a USB
Is there any tool, that really erases everything and take the stock ROM to be installed again? Software, script?
Click to expand...
Click to collapse
Ahh, that's a bother. It's a pretty annoying error. Could be something messed with your TWRP (I'm assuming you tried the commands from there).
There isn't one, but there's really no need for it... you just rename the ROM to update.zip, wipe cache, dalvik-cache and factory reset, and install update.zip. If you just want to flash stock because you like it better for whatever reason, you could also just look at the MoDaCo custom ROM instead, as it is stock based.
As for the other KF... you can't get it recognized, from where? The ROM? TWRP? Fastboot?

Dasanko said:
Ahh, that's a bother. It's a pretty annoying error. Could be something messed with your TWRP (I'm assuming you tried the commands from there).
There isn't one, but there's really no need for it... you just rename the ROM to update.zip, wipe cache, dalvik-cache and factory reset, and install update.zip. If you just want to flash stock because you like it better for whatever reason, you could also just look at the MoDaCo custom ROM instead, as it is stock based.
As for the other KF... you can't get it recognized, from where? The ROM? TWRP? Fastboot?
Click to expand...
Click to collapse
Both of the kindles, are damaged. I can't access them. I just can access one by USB.

For future reference:
This user's issues have been partially dealt with.
The first KF will require a factory cable to be fixed.
The second KF was soft bricked (there were a few corrupt partitions) after a bad flash attempt of the stock ROM. Luckily, FFF was still installed, but the Windows fastboot drivers weren't. Reinstalled FFF+TWRP from Firekit, and then fixed the partitions, wiped and flashed the stock ROM.

Dasanko said:
For future reference:
This user's issues have been partially dealt with.
The first KF will require a factory cable to be fixed.
The second KF was soft bricked (there were a few corrupt partitions) after a bad flash attempt of the stock ROM. Luckily, FFF was still installed, but the Windows fastboot drivers weren't. Reinstalled FFF+TWRP from Firekit, and then fixed the partitions, wiped and flashed the stock ROM.
Click to expand...
Click to collapse
Thanks a LOT, Dasanko !!!!

jRam90 said:
Thanks a LOT, Dasanko !!!!
Click to expand...
Click to collapse
Ok, So, I have the factory cable. How can I test its Ok?
I have another question, the kindle is pratically empty no system, no sdcard memory, probably corrupted ¿How do I use the factory cable, to format the Kindle and install the Stock ROM again?

With the KF off and unplugged, type "fastboot getvar product" on a shell (KFU/tools).
Then plug in the KF using the factory cable. If you get anything listed or returned, it should be working fine. Otherwise, if you wait a few seconds and still nothing, you'll have to check the drivers to make sure the correct fastboot ones are installed.
To check the partitions, you can just "fastboot boot twrp.img" to load a TWRP into memory, and then "adb shell parted /dev/block/mmcblk0 p" to print all partitions' information.

Dasanko said:
With the KF off and unplugged, type "fastboot getvar product" on a shell (KFU/tools).
Then plug in the KF using the factory cable. If you get anything listed or returned, it should be working fine. Otherwise, if you wait a few seconds and still nothing, you'll have to check the drivers to make sure the correct fastboot ones are installed.
To check the partitions, you can just "fastboot boot twrp.img" to load a TWRP into memory, and then "adb shell parted /dev/block/mmcblk0 p" to print all partitions' information.
Click to expand...
Click to collapse
Well, I'm at my job now. So I will try this at home, but the shell is not working since system/sh (shell) it's not in the Kindle. I was trying to boot it yesterday with "fastboot boot twrp.img" and nothing. I also tried: "fastboot getvar product" and nothing but I only used the console. Anyway, let's see what happens...

Quick question, I've read that the factory cable puts the Kindle straight into bootmode, ¿So the color of the power button, has something to do with it? ¿I mean how do I know the kindle has entered factory mode? ¿The orange light is an indicator? (With a standard USB Cable I only get the green light with the power button, with the factory cable I first get green light, then orange light)
I've also read that if I can see the Kindle fire logo, the bootloader is Ok. Hence my Kindle is OK, but I can't enter fastboot mode. ¿Can anyone confirm this?

It'll get stuck in the bootloader screen, and fastboot commands should work as well, provided the drivers are properly installed and working.

Dasanko said:
It'll get stuck in the bootloader screen, and fastboot commands should work as well, provided the drivers are properly installed and working.
Click to expand...
Click to collapse
OK, I've finally made myself a working factory cable. And in the device manger I can see the kindle listed as "Android phone" and in that root it says "Android ADB Interface". Look like drivers are not working. Where can I download them?

Those are the proper drivers for fastboot you should be able to use kfu to send twrp and fff to the device if that doesn't work you will need to fastboot flash them

All I get is < waiting for device>. Looks like the drivers are not installed.

Simply hold the power button down while connected when it says waiting then power it back on and it should send also try unplug replug when it says waiting
---------- Post added at 03:49 PM ---------- Previous post was at 03:44 PM ----------
If you would like some help I have some time before work but you must finish your thread for the benefit of others

[Q] Kindle fire stuck in re-boot mode

Not sure what's going on here.. I unrooted my kindlefire with update.zip but I forgot to wipe to factory reset before i flashed update.zip and when i rebooted my kindle i noticed that A ! symbol popped up with "Sorry" that says "The application Calendar Storage (process com.android.providers.calendar) has stopped unexpectedly. Please try again" That isn't the only problem, i click force close and another prompt comes up saying "The process android.process.acore has stopped unexpectedly. Please try again" It waits a few seconds, then proceeds to do a fast reboot? It comes up with the yellow kindle fire and immediately after it boots up it shows the errors.
Not sure what to do. Tried installing TWRP but the kindle doesn't stay on long enough so right now I'm pretty unconvinced of anything..
Any help would be greatly appreciated.

You just need to fast quickly get to factory reset and reset it try from a powered off position it may give you a few seconds extra to complete the task...

Thepooch said:
You just need to fast quickly get to factory reset and reset it try from a powered off position it may give you a few seconds extra to complete the task...
Click to expand...
Click to collapse
I'm not sure how to get there.. I don't have any form of backup installed. It's on the complete default rom
Edit: Found out how to get to factory reset, only to discover that I need a 40% charge, when mine is less than 5% and won't charge any more because of my problem

Still haven't figured this out. Can't use my kindle at all until this is fixed :/

iKrotos said:
Still haven't figured this out. Can't use my kindle at all until this is fixed :/
Click to expand...
Click to collapse
You're most likely going to have to put the device into fastboot mode to fix this problem. You can quickly send a sequence of adb commands to put the device into fastboot before the system crashes...
http://forum.xda-developers.com/showthread.php?t=1638452
by using the "Getting to fastboot mode" section above. That seems sketchy at best. Otherwise, you can get a factory cable...
http://forum.xda-developers.com/showthread.php?t=1550999
and put it into fastboot mode that way. In either case, you'll want to delete the userdata partition...
Code:
fastboot -i 0x1949 erase userdata
Then the next time you boot the device normally (by changing the bootmode back to 4000 if it isn't already), the system software will remake that partition and it should boot normally.

kinfauns said:
You're most likely going to have to put the device into fastboot mode to fix this problem. You can quickly send a sequence of adb commands to put the device into fastboot before the system crashes...
http://forum.xda-developers.com/showthread.php?t=1638452
by using the "Getting to fastboot mode" section above. That seems sketchy at best. Otherwise, you can get a factory cable...
http://forum.xda-developers.com/showthread.php?t=1550999
and put it into fastboot mode that way. In either case, you'll want to delete the userdata partition...
Code:
fastboot -i 0x1949 erase userdata
Then the next time you boot the device normally (by changing the bootmode back to 4000 if it isn't already), the system software will remake that partition and it should boot normally.
Click to expand...
Click to collapse
Read the beginners guide for KF, Found about about ADB fastboot etc. Going to install ADB tomorrow and try to figure this all out. Thanks.

I can't do this. It's been over a month. My kindle is finished..

iKrotos said:
I can't do this. It's been over a month. My kindle is finished..
Click to expand...
Click to collapse
"I can't do this"
Well that explains everything, doesn't it? It's a good thing you explained your problem in such great detail or I might spend time trying to help you fix your Kindle thinking you "could" do it. Phew. Saved us all a lot of time, thank you.

I made the same mistake of flashing the stock update without wiping and factory resetting.
The device will boot, then immediately give the calendar and android.process.acore errors for about 20 seconds before rebooting. It doesn't give me enough time to do a factory reset through the menu before it restarts.
After reading up on basic guides and downloading the necessary software, I can't find a way to get to fastboot, and I'm afraid even the noob guides are just confusing me more at this point.
From what I can understand, I'll probably have to get a factory cable to force the device into fastboot, because the Kindle reboots before the PC has a chance to recognize it, but what happens then? I've read the ADB for dummies guides, and searched the forum for and I still can't really understand how to execute the commands.
Can anyone link a relevant thread, or maybe give some dumbed-down advice?

LaszloToth said:
I made the same mistake of flashing the stock update without wiping and factory resetting.
The device will boot, then immediately give the calendar and android.process.acore errors for about 20 seconds before rebooting. It doesn't give me enough time to do a factory reset through the menu before it restarts.
After reading up on basic guides and downloading the necessary software, I can't find a way to get to fastboot, and I'm afraid even the noob guides are just confusing me more at this point.
From what I can understand, I'll probably have to get a factory cable to force the device into fastboot, because the Kindle reboots before the PC has a chance to recognize it, but what happens then? I've read the ADB for dummies guides, and searched the forum for and I still can't really understand how to execute the commands.
Can anyone link a relevant thread, or maybe give some dumbed-down advice?
Click to expand...
Click to collapse
Get a factory cable and then we can work on fixing your device.
One thing you have to know about entering commands is that computers have no more intelligence than, say, an ordinary rock. Meaning, they are not able to think on their own. They don't have the capacity to make their own decisions. Everything is laid out for them via sets of instructions. ADB and fastboot are programs with their own sets of instructions embedded into them, so in order to use them, you must direct the computer to those programs. When entering commands from the command line, the computer will search only the present working directory for those commands (plus any directories in it's PATH, but that is a subject for another time). When you open a command prompt in Windows, it will start in a specific directory (folder). Normally in Windows its the "Documents and Settings" folder (if I remember correctly). When you enter a command like "adb devices", the computer will search it's own set of built in commands for the first word (command) in the command line (in this case, adb). If that command isn't in it's set of built in commands, it searches the present working directory. In all likelihood, adb will not be in in the first present working directory when the command prompt opens up so you have to redirect it. There are several ways to do this. You can make sure the directory containing adb is in your PATH, but there's a little bit of learning involved and it's unnecessary unless you intend to enter a LOT of adb commands. You can change directories (cd) to the correct folder, but if you don't know what you're doing it can get very confusing and frustrating. The easiest and most straight forward way of doing this is to locate the directory containing adb and fastboot then "Shift + right-click, on that folder and select "Open command window here". The command window that opens is where you'll enter your adb/fastboot commands. Apart from that, you must really know the commands you're using, how they're used and what they do, or you're just wasting your time.

Does or kindle gets recognized.. if so there is a chance to recover
Sent from my MB526 using Tapatalk 2

soupmagnet said:
Get a factory cable and then we can work on fixing your device.
One thing you have to know about entering commands is that computers have no more intelligence than, say, an ordinary rock. Meaning, they are not able to think on their own. They don't have the capacity to make their own decisions. Everything is laid out for them via sets of instructions. ADB and fastboot are programs with their own sets of instructions embedded into them, so in order to use them, you must direct the computer to those programs. When entering commands from the command line, the computer will search only the present working directory for those commands (plus any directories in it's PATH, but that is a subject for another time). When you open a command prompt in Windows, it will start in a specific directory (folder). Normally in Windows its the "Documents and Settings" folder (if I remember correctly). When you enter a command like "adb devices", the computer will search it's own set of built in commands for the first word (command) in the command line (in this case, adb). If that command isn't in it's set of built in commands, it searches the present working directory. In all likelihood, adb will not be in in the first present working directory when the command prompt opens up so you have to redirect it. There are several ways to do this. You can make sure the directory containing adb is in your PATH, but there's a little bit of learning involved and it's unnecessary unless you intend to enter a LOT of adb commands. You can change directories (cd) to the correct folder, but if you don't know what you're doing it can get very confusing and frustrating. The easiest and most straight forward way of doing this is to locate the directory containing adb and fastboot then "Shift + right-click, on that folder and select "Open command window here". The command window that opens is where you'll enter your adb/fastboot commands. Apart from that, you must really know the commands you're using, how they're used and what they do, or you're just wasting your time.
Click to expand...
Click to collapse
Thanks, I've read up a bit more about the ADB and Fastboot commands, and I think I have a better grasp on them now, and your explanation of where I need be as far as changing directories in the command prompt really clears things up.
From reading your advice earlier in this thread, my best option would probably be to wipe the existing user data on the device that I forgot about before re-flashing the stock Kindle update by changing directories to the folder which contains ADB.exe and Fastboot.exe, then running the "fastboot -i 0x1949 erase userdata" command once I've connected the device with a factory cable. By doing this, would I be essentially restoring the device as if it were brand new again? Aside from erasing user data, are there any other ADB or Fastboot commands that I should run?
Also, assuming the ADB drivers are installed properly, once I've plugged in the device with the factory cable, will KFU immediately recognize the device, or will I need to first run the "fastboot -i 0x1949 erase userdata" command to get it back to stock first before I get 4000 status in KFU? I'm wondering if I could just plug in the factory cable, root and flash TWRP via KFU, then wipe and factory reset the user data from within TWRP, or would that be going about it backwards?
Thanks again fro the help!
---------- Post added at 02:31 PM ---------- Previous post was at 02:24 PM ----------
kishorev said:
Does or kindle gets recognized.. if so there is a chance to recover
Sent from my MB526 using Tapatalk 2
Click to expand...
Click to collapse
No, the KFU status is "unknown" and Windows doesn't even really have time to recognize that the device is connected via USB, since the Kindle will reboot every 15-20 seconds.
I've ordered a factory cable, so hopefully it will be a pretty straight-forward fix once I get it.

Had a similar problem of rebooting every 10 sec or so..I left it on charge overnight and it worked..it got charged decent enough for me to help recover it..
Just try charging it overnight it might just work..I always feel using factory cable shd be the last resort
Sent from my Kindle Fire using Tapatalk 2

LaszloToth said:
Thanks, I've read up a bit more about the ADB and Fastboot commands, and I think I have a better grasp on them now, and your explanation of where I need be as far as changing directories in the command prompt really clears things up.
From reading your advice earlier in this thread, my best option would probably be to wipe the existing user data on the device that I forgot about before re-flashing the stock Kindle update by changing directories to the folder which contains ADB.exe and Fastboot.exe, then running the "fastboot -i 0x1949 erase userdata" command once I've connected the device with a factory cable. By doing this, would I be essentially restoring the device as if it were brand new again? Aside from erasing user data, are there any other ADB or Fastboot commands that I should run?
Also, assuming the ADB drivers are installed properly, once I've plugged in the device with the factory cable, will KFU immediately recognize the device, or will I need to first run the "fastboot -i 0x1949 erase userdata" command to get it back to stock first before I get 4000 status in KFU? I'm wondering if I could just plug in the factory cable, root and flash TWRP via KFU, then wipe and factory reset the user data from within TWRP, or would that be going about it backwards?
No, the KFU status is "unknown" and Windows doesn't even really have time to recognize that the device is connected via USB, since the Kindle will reboot every 15-20 seconds.
I've ordered a factory cable, so hopefully it will be a pretty straight-forward fix once I get it.
Click to expand...
Click to collapse
One thing you need to realize, is that once you get custom recovery installed, you will rarely ever need to use fastboot commands. Fastboot commands really only need to be used when everything else fails. Custom recovery and the latest version of the FireFireFire bootloader have probably 90% of the functionality that fastboot has, so unless those options aren't available to you, try to avoid fastboot altogether.
Most Kindle Fire problems are fixed by wiping the system, data & cache (factory reset) partitions and reinstalling the ROM.
Your first course of action should be to get TWRP and FireFireFire installed, if they aren't already. For this you will need fastboot commands. In order to issue fastboot commands, you need to be in fastboot mode. I'm guessing this is most likely not the case. Unfortunately, without a system to boot to, or the FireFireFire bootloader (blue Kindle Fire logo) installed, you have no chance of getting into fastboot without a factory cable.
The factory cable will get you into fastboot so you can reinstall custom recovery and reinstall a new ROM. You can then use the custom recovery to install a new bootloader (never wipe to install a bootloader BTW). Chances are, that is all you need to fix your device. You should keep your device powered off (hold power button for 20 seconds), until the factory cable arrives.
Hope that helps.

soupmagnet said:
One thing you need to realize, is that once you get custom recovery installed, you will rarely ever need to use fastboot commands. Fastboot commands really only need to be used when everything else fails. Custom recovery and the latest version of the FireFireFire bootloader have probably 90% of the functionality that fastboot has, so unless those options aren't available to you, try to avoid fastboot altogether.
Most Kindle Fire problems are fixed by wiping the system, data & cache (factory reset) partitions and reinstalling the ROM.
Your first course of action should be to get TWRP and FireFireFire installed, if they aren't already. For this you will need fastboot commands. In order to issue fastboot commands, you need to be in fastboot mode. I'm guessing this is most likely not the case. Unfortunately, without a system to boot to, or the FireFireFire bootloader (blue Kindle Fire logo) installed, you have no chance of getting into fastboot without a factory cable.
The factory cable will get you into fastboot so you can reinstall custom recovery and reinstall a new ROM. You can then use the custom recovery to install a new bootloader (never wipe to install a bootloader BTW). Chances are, that is all you need to fix your device. You should keep your device powered off (hold power button for 20 seconds), until the factory cable arrives.
Hope that helps.
Click to expand...
Click to collapse
So instead of using fastboot to wipe the user data, I should use it to install TWRP? Can you give me the fastboot command for that? Or can I do that with KFU once I plug in the factory cable?

http://forum.xda-developers.com/showpost.php?p=23747804

Thanks soupmagnet, I got the factory cable today and was able to flash FFF and TWRP with fastboot commands, and it's working like it should again. You help has been much appreciated.

same problem with kindle fire.
LaszloToth said:
Thanks soupmagnet, I got the factory cable today and was able to flash FFF and TWRP with fastboot commands, and it's working like it should again. You help has been much appreciated.
Click to expand...
Click to collapse
hi, i am new here and i got exact the same problem with you, i just ordered the factory cable, can you please give the step by step procedure on solving this problem with the factory cable. your help will be appreciated, thanks.

Thepooch said:
You just need to fast quickly get to factory reset and reset it try from a powered off position it may give you a few seconds extra to complete the task...
Click to expand...
Click to collapse
:good::good::good::good::good::good: works for me thank you

ok, today i had the same problem because i didn't wipe the factory restore!
The solution WASN'T the Factory Cable (I was considering buying one)!
Very easy:
Linux and SOUPKIT! were the solution, when the tablet boots up immediately hit the install recovery, after installing recovery, just set to boot into recovery.
Now is very much you can do (ex. wipe everything and than install update.zip all over)
Very much thank you to the guy who made SOUPKIT! (u've saved my S many many times )

[Q] Bricked KF2 - no OS, fastboot & TWRP available

I've read through hundreds of similar threads and haven't been able to find a solution - I'll gladly give up my firstborn (and/or make a paypal donation) to anyone who is able to help solve my issue!!
From my research, I seem to have no OS installed on the Kindle, and as far as I can tell, I'm booting into fastboot mode (screen hangs on the blue/white Kindle Fire logo, screen does not ever dim). I AM able to access TWRP Recovery, but don't have any backup to load from, am unable to successfully flash the ROM that I have saved to my SD card. My device manager recognizes the Kindle as a Kindle Fire (Android ADB Interface), no yellow triangles. Typing ADB Devices into Command Prompt gets me: [device number ] offline. Typing fastboot devices into Command Prompt gets me nothing (blank line).
Background/How I 'Bricked' It: I have a Kindle Fire 2 and was able to successfully unroot/flash Cyanogenmod 10 onto it. Worked perfectly for about 6 months, when I decided that it would be a good idea to flash back to stock so that I could give it to a relative. I have TWRP 2.3.3.0, so I used a guide on xda to do the following:
I used a guide from xda and followed these instructions
-Download latest KF2 stock software from amazon. Re-name the file to update.zip
-Moved it to the root of the SD card
-Booted in to TWRP
-Factory Wipe/Restore
-Wiped Cache
-Wiped Dalvik Cache
-Wiped System
-Installed the "update.zip"
-Wiped cache/dalvik again
-Rebooted
Unfortunately, wiping the system seems to have wiped the CM10 OS (ROM) that I had installed, and there was a failure in installing the amazon stock:
Installing '/sdcard/download/update.zip...
assert failed: is_substring ("Otter2 , file_getstring("/proc/product_name"))
E: Error in /sdcard/download/update.zip
(Status 7)
Error flashing zip '/sdcard/download/update.zip'
Updating partition details...
Trying to reboot the system from TWRP results in a message that states: "No OS installed! Are you sure you wish to reboot?"
Investigating using ADB: So it looks like I have no OS on the Kindle Fire 2. This seems to be a problem because without an OS, I am unable to use adb (from what I've read, no OS = no way to accept/authenticate the computer RSA fingerprint to whitelist the kindle and allow adb to function). Trying to use KFU, KFFirstAide, or the Kindle UnBrick Utility results in Error: Device offline or Error: Device not found types of messages (I am assuming due to the fact that I can't "turn" adb on by accepting the RSA fingerprint prompt)
What does Device Manager tell me? My computer can 'see' the Kindle Fire in device manager [as I stated earlier: My device manager recognizes the Kindle as a Kindle Fire (Android ADB Interface), no yellow triangles] but going to My Computer and looking under mass storage devices, the computer doesn't seem to recognize the device as a USB storage device, which is a problem because I can't drag/drop or push/pull files to the SD card so I can't try to flash anything *other* than the original file that failed.
Fastboot Mode...? From what I can tell (http://forum.xda-developers.com/showthread.php?t=1668159), my device is in fastboot mode. My Kindle screen hangs on the blue/white Kindle Fire logo screen, which from what I understand is hashcode's bootloader/fastboot screen. However, when I look at the Hardware IDs in the device manager, it tells me that my hardware IDs are:
USB\VID_1949&PID_0006&REV_0216
USB\VID_1949&PID_0006
So...my kindle seems to be stuck on the blue/white fastboot screen, but register on my computer as the stock kindle fastboot? I'm not really sure what's going on there, and couldn't find too many people with the same discrepancy that I have...
I tried plugging in my cord (making sure to use a USB 2.0 port), going into Command Prompt and using some fastboot commands. (ie: fastboot flash bootloader \path\update.zip) but all I get is a <waiting for device> for a LONG time. As in, a few hours. Some basic googling/investigation seems to indicate that I don't have fastboot drivers installed, OR that I wasn't running fastboot in an 'elevated mode' but I haven't been able to find too many details about how to fix those, IF that is the problem.
TWRP 2.3.3.0: I can get into TWRP recovery just fine, although I can't seem to figure out how to get files onto my device. So I've tried re-installing the original update.zip file that failed the first time several times, with no success. trying to 'Mount' the device doesn't seem to do anything (at least, my computer doesn't see the device as USB storage regardless of whether it's mounted or not) I tried using Advanced --> ADB Sideload, but trying to send the file in Command Prompt using the adb sideload <filename> command just gets me an Error: Device not Found message. I thought maybe I could try Advanced --> Terminal Command, but have no idea how to do that or what it does, and most sites are very vague about the step-by-step details, so I didn't really touch it.
Not sure if this is relevant or not, but when my KF2 is plugged into (attached) to my computer with the cord and is in TWRP, device manager shows the device under 'Other Devices' --> Amazon Kindle Fire2, and there is a yellow triangle on it. Not sure why...going back to 'fastboot' mode gets rid of yellow triangles and is recognized as a Kindle Fire again.
At this point - I'm pretty much stumped and have (hopefully) demonstrated that I've done my best to do my own research/read through threads/done due diligence. Is there anyone out there that might have any suggestions? Or do I now have a very large paperweight?
ANY input/suggestions/encouragement is welcome! I absolutely and sincerely appreciate your time in reading through this thread and trying to help noobs like me!

Use fast boot mode to recover to stock: http://forum.xda-developers.com/showthread.php?t=2096888
Or
If you have access to twrp. Use the ADb sideload feature to push CyanogenMod or another ROM over.
One thing though- if you can boot into TWRP you didn't wipe the system partition. Twrp for kf2 requires a file named stack to be there.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

...tried those, but maybe am doing them incorrectly?
mindmajick said:
Use fast boot mode to recover to stock: http://forum.xda-developers.com/showthread.php?t=2096888
Or
If you have access to twrp. Use the ADb sideload feature to push CyanogenMod or another ROM over.
One thing though- if you can boot into TWRP you didn't wipe the system partition. Twrp for kf2 requires a file named stack to be there.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Click to expand...
Click to collapse
Trying to use the ADB sideload feature to push CM or another ROM over doesn't seem to be working for me (unless I'm doing it wrong?)
I tried using Advanced --> ADB Sideload, but trying to send the file in Command Prompt using the "adb sideload C:\users\Name\update.zip command just gets me an Error: Device not Found message". Could I be using the command incorrectly?
Trying to use any fastboot command in Windows Command Prompt results in <waiting for device> to hang for hours, with no changes to command prompt and no changes to the kindle (still sits at the blue/white boot logo).

Ah. Sorry. Missed that in the OP.
Sounds like you probably need the drivers installed.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

Fastboot Drivers
mindmajick said:
Ah. Sorry. Missed that in the OP.
Sounds like you probably need the drivers installed.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Click to expand...
Click to collapse
Are there difference drivers for fastboot and adb? I don't get a 'yellow triangle' and my device manager identifies the device as a Kindle Fire [Android ADB Interface], so I thought I was okay.
Should I be looking for fastboot drivers?
And btw, thanks so much for your willingness to help and input!

ME TOO
Just purchased a KF from someone...thay had rooted it...I tried to unroot...got stuck...now mine is doing the same as yours. I hope someone has a fix for you as I too have a large paperweight.

Follow Up
tessa33 said:
I've read through hundreds of similar threads and haven't been able to find a solution - I'll gladly give up my firstborn (and/or make a paypal donation) to anyone who is able to help solve my issue!!
From my research, I seem to have no OS installed on the Kindle, and as far as I can tell, I'm booting into fastboot mode (screen hangs on the blue/white Kindle Fire logo, screen does not ever dim). I AM able to access TWRP Recovery, but don't have any backup to load from, am unable to successfully flash the ROM that I have saved to my SD card. My device manager recognizes the Kindle as a Kindle Fire (Android ADB Interface), no yellow triangles. Typing ADB Devices into Command Prompt gets me: [device number ] offline. Typing fastboot devices into Command Prompt gets me nothing (blank line).
Click to expand...
Click to collapse
tessa33,
I just sent you a response. Call me at 707-774-5923 when you have a moment.

Solution?
I figured I could post in this thread before staring my own because I am having a very similar issue trying to revert my Kindle Fire 2 back to stock from cyanogen so I can sell it. I downloaded the official software from Amazon but every time I try to flash it through TWRP I get the exact same error you were getting. Did anyone ever figure out how to resolve the issue for you?

Had the same problem, so I chatted with an Amazon associate, told him I turned it on one day and it showed the grey triangle and he sent me a new Kindle Fire 2nd Gen for free. Try that...
Sent from my iPhone using Tapatalk

Hello
I have rooted KF2 and I did factory reset I lost TWRP&Os I can see the device as ADB device, Howeverm when the device in fastboot the pc not recognize it.
issuing fastboot devices command return nothing.
I used ubuntu and windows still the same issue. any idea?

[Q] TWRP flash failed but firefirefire installed, now I can't get to fastboot mode

I've been trying to root my Kindle Fire running 6.3.3. I bought a fastboot cable and got it to boot into fastboot mode to flash TWRP and firefirefire. I ran the commands and TWRP failed but firefirefire installed. Now when the kindle boots I get the firefirefire bootloader but it cant boot into the recovery because the TWRP never installed. Also, I can't get it to fastboot anymore, not even with the cable. Can anyone please help me get TWRP installed? I've read many forums and tried about everything I found.

kas782000 said:
I've been trying to root my Kindle Fire running 6.3.3. I bought a fastboot cable and got it to boot into fastboot mode to flash TWRP and firefirefire. I ran the commands and TWRP failed but firefirefire installed. Now when the kindle boots I get the firefirefire bootloader but it cant boot into the recovery because the TWRP never installed. Also, I can't get it to fastboot anymore, not even with the cable. Can anyone please help me get TWRP installed? I've read many forums and tried about everything I found.
Click to expand...
Click to collapse
FFF bootloader supports fastboot commands, but the flash command is now
fastboot flash recovery file name
ie drop the -i 0x1949
Code:
fastboot flash recovery openrecovery-twrp-2.6.3.1-otter.img
because the fastboot mode window is short
with kindle connected to pc, power off kindle, enter commands, then power on kindle

sd_shadow said:
FFF bootloader supports fastboot commands, but the flash command is now
fastboot flash recovery file name
ie drop the -i 0x1949
Code:
fastboot flash recovery openrecovery-twrp-2.6.3.1-otter.img
because the fastboot mode window is short
with kindle connected to pc, power off kindle, enter commands, then power on kindle
Click to expand...
Click to collapse
I've been trying this for about 30 minutes or so with no luck...I even downloaded a different version of the twrp image. Do I have to wait for the fastboot screen to start the command or do I start the process before powering on the device? I'm not really sure what I'm doing wrong here.

kas782000 said:
I've been trying this for about 30 minutes or so with no luck...I even downloaded a different version of the twrp image. Do I have to wait for the fastboot screen to start the command or do I start the process before powering on the device? I'm not really sure what I'm doing wrong here.
Click to expand...
Click to collapse
Should be able to do it either way but I press enter, before the power button
This will not work if drivers are not correct
could try
Code:
fastboot devices
as a test should get something like
Code:
123456789 bootloader
back in command prompt

I finally got it to work and I can't thank you enough. You were right. I knew my computer recognized the device with adb in normal boot but my computer wouldn't recognize the device in fastboot mode until i reinstalled the android driver while it was in fastboot mode. Now I have a custom ROM running Google Play apps! Again, thank you!

Hey, I don't know if this will help others, but I had a hell of a time trying to get my kindle to recognize while in the bootloader/fastboot mode... It frustrated me so much that I had to write about it.
I recently switched to Windows 10, so it seems like my computer is relearning drivers and stuff...
My kindle was fine when on, and I could issue adb commands from the main screen, but when in fastboot mode, I couldn't get it detected. I knew the drivers were an issue, but I couldn't figure out how to do it. I looked at Amazon's support pages, went through the SDK route, tinkered with the adb.ini and so forth... to no avail.
Post after post said that the easiest way to install the drivers was through the Kindle Fire Utility, but for some reason, the drivers in the .bat file kept failing and would not load. It took a good few hours to figure out the solution.
When I asked the Web why the drivers kept failing, I came across a post that said Windows was actually blocking unknown drivers from loading onto my system. I really wish Windows had told me that instead of just saying "Fail"...
I had to hold down the shift button and click restart on the start menu, and when the computer restarted, I when through: troubleshoot -> advanced options -> startup settings and clicked on Restart. It eventually gave me the option to disable that signature verification [F7]
My explanation is crude, because I want you to look it up properly. Just search for "disable driver signature enforcement" and you should be fine.
Hope this helps others out. I may have to revisit my own post just to see how to do this again.