Database Users

[Q] Another Bricked KF for the Pile [SOLVED]

I looked through A LOT of bricked KF threads but I can't fix the issue that I'm having. Before I found this forum and the very useful looking tools that it provides (KFU, etc) I managed to root my KF by using adb and pushing / installing burritoroot by the command prompt. Everything looked OK, I installed su and got root access to work in the adb shell as well as for apps.
I attempted, without much success, to get the Android Market working on my KF but it always crashed. I messed with some permissions like for /system/app, but I changed that one back to match the other folders in /system.
I may have deleted an apk out of /system/app that wasn't the Android Market, but I'm not sure...
Anyway, I tried to reboot my KF and it got stuck in a boot logo loop. It reports a boot mode of 4000 (normal).
I tried the fastboot recovery method and also KFU, but there are some issues:
Root access seems to have disappeared (access through adb shell cannot be elevated)
Burritoroot will not install anymore through KFU (I get the message "Error: Could not access the Package Manager. Is the system running?"
The above message also occurs when I try to use the adb install command
Fastboot never recognizes the device. It sits on <Waiting for Device> forever.
I've tried rebooting the KF while connected and reconnecting the USB.
I made a Factory Cable, but the Fastboot condition is the same.
I uninstalled my Windows drivers until it showed up as "Kindle" in the Device Manager and installed the files that came with KFU.
I tried the KF Unbrick utility, but that didn't seem to do anything that I missed.
Additionally, when I connect with adb shell I have limited file system access. I can is through /system and some other folders, but I can't access /sdcard and I can't seem to mount the sd card
After writing all this and thinking it through, I decided to compare the /system/app directory on my KF with one in an update.zip file that I downloaded.
It looks like I deleted the file ApplicationsProvider.apk from /system/app
That seems to be the only thing missing.
Is this a Try-to-return-your-KF important file? Is my KF hosed?

fonetik said:
Is this a Try-to-return-your-KF important file? Is my KF hosed?
Click to expand...
Click to collapse
Nope, if you can get fastboot working it doesn't matter how broken /system is. Try this to sidestep the Windows driver problems I think you're having:
http://forum.xda-developers.com/showthread.php?t=1430038
Once you get TWRP installed you can restore from the stock update which will wipe and replace /system.

Thanks I'll give this a shot. I had some issues with Windows when trying to install Cyanogen on my Droid X and a Linux Live-CD got me back on track. Hopefully this will do the trick. I'll report back.

Well, I'm in Ubuntu and I got the firekit stuff up, but it does the same thing. It refuses to connect with fastboot. It just sits at < Waiting for Device >.

I had a similar problem and it was my usb driver set up:
/etc/udev/rules.d/##-android.rules
the ## for Meerkat is 70
SUBSYSTEM==”usb”, ATTR{idVendor}==”0bb4″, MODE=”0666″
Vendorid is 1949 for KF
link that got me going: http://esausilva.com/2010/05/13/setting-up-adbusb-drivers-for-android-devices-in-linux-ubuntu/
sorry if you already know this.

I'm new to this so thanks. I'll try it tomorrow when I get a chance.

fonetik said:
Well, I'm in Ubuntu and I got the firekit stuff up, but it does the same thing. It refuses to connect with fastboot. It just sits at < Waiting for Device >.
Click to expand...
Click to collapse
Are you sure you're in fastboot at that point? Are you using your factory cable? Try doing this to get into fastboot mode and use a different USB cable to connect with fastboot. If that doesn't work, do the same but use Firekit in case the fastboot drivers are messed up.

I'm probably not in fastboot. I'll give this a shot. Thanks again.
Edit:
That seems to have gotten me into Fastboot! I'll see if I can get TWRP installed.
There's a faint pulse =)
Edit 2: TWRP installed OK and I used it to try and install the stock update.zip. It rebooted and then got stuck at the logo again, but I'm going to keep working on it. At least I have a tool I can use.
Edit3: I seemed to be stuck at the TWRP yellow triangle, I think I managed to install FireFireFire, and managed to get back into TWRP. I cleared all my caches and did a factory reset. Then I installed a pre-rooted version of 6.2.1. It did a little reboot dance for a while and then came up into the OS!
Thanks a ton pokey9000. I'm happy to send a couple $$ your way.

fonetik said:
Edit3: I seemed to be stuck at the TWRP yellow triangle, I think I managed to install FireFireFire, and managed to get back into TWRP.
Click to expand...
Click to collapse
Just in case someone else reads this... The Yellow Triangle is not TWRP... it is FireFireFire... TWRP by default is the blue themed screens you get after the FireFireFire icon and will start out saying TEAMWIN in Landscape mode.
BTW, good to hear you fixed the problem. You should edit the original post and change the Subject adding [SOLVED]

krelvinaz said:
Just in case someone else reads this... The Yellow Triangle is not TWRP... it is FireFireFire... TWRP by default is the blue themed screens you get after the FireFireFire icon and will start out saying TEAMWIN in Landscape mode.
BTW, good to hear you fixed the problem. You should edit the original post and change the Subject adding [SOLVED]
Click to expand...
Click to collapse
Sorry about the confusion. It was the FFF triangle, but the KF wasn't going into recovery when I held the power button down. I reinstalled with FFF using adb and it worked. Original post subject updated.

How I was able to unbrick my Kindle Fire

Hi everyone.
I managed to brick my kindle fire within an hour of purchasing it, but using the suggestions on this forum, I was able to get it back up and running in a few hours.
The method that I had to use involved suggestions grabbed from several threads, so I wanted to provide instructions on exactly how I managed to fix mine in case someone ends up in the same situation as me.
For starters, I had just updated my Kindle Fire to 6.2.1 and I was messing around with trying to get the google app manager installed. I rooted the device, and I was changing permissions in the /system/app directory when the device crashed and became stuck on the boot animation. I did not have TWRP installed at the time.
So if you are like me, or in a similar situation, this may be applicable.
These instructions assume that you have adb on your computer.
First, ensure that you are able to communicate with your device using ADB. Verify this by using the command:
adb devices
Click to expand...
Click to collapse
or by using the kindle fire utility and ensuring that the status is online.
If you are not able to communicate with your device AND have the boot animation (right to left reflection across the "Kindle Fire" logo text), you likely have a driver issue.
Several possible ways to resolve this. First, I recommend going to device manager and unistalling the driver for the android phone adb interface. Unplug the kindle fire and plug it in again. The device should show up without a driver as "kindle". Manually apply the proper driver again and check the adb connection. If this does not work, uninstall the driver again and add 0x18d1 at the end of adb_usb.ini on a line underneath "0x1949" and reapply the driver. Toss in a few shutdowns in between some of these steps if you are still having trouble. Hopefully you now have a connection to your device.
If you are not able to communicate with your device AND do not have the boot animation (right to left reflection across the "Kindle Fire" logo text), your kindle fire is in the wrong bootmode (likely fastboot).
To fix this, download fastboot.exe (if you don't already have it) and run the following command, even if you don't have an adb connection)
fastboot -i 0x1949 oem idme bootmode 4000
fastboot -i 0x1949 reboot
Click to expand...
Click to collapse
or if that doesn't work
fastboot -i 0x18d1 oem idme bootmode 4000
fastboot -i 0x18d1 reboot
Click to expand...
Click to collapse
Your kindle fire should restart and now be stuck at the logo with animation, and you should have the ability to communicate with your device through adb now.
Now, you should download the kindle fire firmware (6.2.1 as of the time of writing this) from http://www.amazon.com/gp/help/customer/display.html?nodeId=200790620. Rename this to update.zip and drop it in the same directory as adb.exe on your pc. Execute the following command.
adb push update.zip /sdcard/
Click to expand...
Click to collapse
Now, you need to use fbmode to enable the fastboot mode, per pokey9000's instructions at http://forum.xda-developers.com/showthread.php?p=20755810
Assuming that that was able to complete successfully, you need to flash TWRP 2.0 per pyrostic's instructions at http://rootzwiki.com/topic/12363-ho...our-kindle-fire/page__pid__301703#entry301703
You now should be stuck at a screen with a yellow triangle. Pressing the power button several times until it turns orange should bring you into the recovery screen. Do the following:
Wipe cache
Wipe dalvik cache
Factory reset
Go back to the home screen and select install -> update.zip
And when that's done, you can tell it to reboot.
It'll think for a minute or two at the kindle fire boot, and then it will go into the initial setup screen. You're now the proud owner of a working fact0ry default kindle fire!
Quick note: I wrote this from memory quickly to try to help anyone experiencing problems. I'm no android expert, so if there are ways to improve on this or corrections to be made, please let me know so that the community can benefit.
And I don't want to appear to take undue credit for any of these instructions. I did not come up with anything on this guide on my own, everything came from various threads on this forum. These are just the steps that I followed to successfully bring my kindle fire back from death.

Man, My Kindle Fire does not even get detected by my PC

Now, you need to use fbmode to enable the fastboot mode, per pokey9000's instructions at http://forum.xda-developers.com/show...php?p=20755810
Assuming that that was able to complete successfully, you need to flash TWRP 2.0 per pyrostic's instructions at http://rootzwiki.com/topic/12363-how...03#entry301703
You now should be stuck at a screen with a yellow triangle. Pressing the power button several times until it turns orange should bring you into the recovery screen. Do the following:
Wipe cache
Wipe dalvik cache
Factory reset
Go back to the home screen and select install -> update.zip
And when that's done, you can tell it to reboot.
It'll think for a minute or two at the kindle fire boot, and then it will go into the initial setup screen. You're now the proud owner of a working fact0ry default kindle fire!
****When I run the fbmode I am getting stuck on the boot logo screen. Can someone please help me??

that is normal - you are in fastboot mode now - adb commands don't work in this mode - fastboot commands do - resume with the description ...

Thanks for your post.
I also "bricked" my kindle the day I got it but my issue was not having the correct drivers installed when I started the rooting process. My drivers would recognize the Kindle when it was booted normally but when it went into fastboot mode the Kindle would just show as "Unknown Device" in device manager. In windows you can't remove the drivers for unknown device so I had no way of backing out the old drivers.
What I ended up doing was grabbing my other laptop and making sure I had the correct drivers installed, then connected the kindle and was able to back it out of fastboot mode.
---------- Post added at 09:05 AM ---------- Previous post was at 09:04 AM ----------
umarsl said:
Man, My Kindle Fire does not even get detected by my PC
Click to expand...
Click to collapse
Does it show up as "unknown Device" in device manager?

you can uninstall the drivers
win 7:
http://www.petri.co.il/removing-old-drivers-from-vista-and-windows7.htm
xp:
http://www.techrepublic.com/article/removing-unused-device-drivers-from-windows-xp-machines/6017628

Just wanted to say thanx for the post. I ran into the exact same condition that the op did where I inadvertently screwed up the permissions on the /system/app directory which caused the kf to wig out and brick. I wished I had seen your post earlier because I ended up going to many posts and piecing together the information which was a little confusing at times. The op is great and I just wanted to point out two observations that seemed to me the most confusing working through the issue and getting it unbricked and hopefully will bring some clarity for folks.
1. Understanding the different states of the "kindle fire" logo.
- Shimmering animation and appears to loop = normal boot mode and is the state that you should be able to communicate with adb. This is the state where you can push files to the kf like twrp and fbmode which is what is needed to get kf in fastboot mode when bricked like this.
- The logo is static and does not "wink" out or loop = fastboot mode. This is when you use fastboot commands on your PC to change boot modes and also execute files such as twrp to get it installed once you pushed it to the kf with adb.
2. USB Drivers.
- This can be a real killer. After playing with this for hours, the one thing that I found that helped the most was when the driver stopped working I would unplug the kf from the PC and then hard reboot the kf (hold on/off ~20 seconds) then just plug back in, don't use on/off. Keep the device manager open on the PC and watch. You will soon start to see a pattern when you have the right driver and do this a few times.
Once these things are ironed out all eventually works out. BTW, this occurred after my kf was upgraded to 6.2.2. So the instructions and tools and everything else you will find still works. Good luck to anyone working through this issue. Just remember, if you can communicate with it, it's almost certain there is a way to recover it.

KF stuck in TWRP 2.0 boot loop

Hello all,
I realize that I am a noob. I realize you can see the "posts=1". I realize that you guys have probably seen the above title a million times before. Honestly though, I feel like I'm at end. I've scoured Google & xda-dev for 5+ hours now and I can't find a single answer that works. So here's my "special" problem:
Info: Windows 7 Home Premium 32-bit
Kindle Fire (previously) temp rooted with BurritoRoot. Installed TWRP 2.0, firefirefire, google-framework.apk, and the rest of the lot, then de-rooted.
Yesterday, I realized that the Music tab on my KF was crashing. I was literally unable to look at my music. About half an hour later, I was unable to read books as well. Thinking about it now, I'm pretty sure that it was because I had forgotten to uncheck "update automatically" for the stock kindle apps in the Android Market/Play Store, making it unusable in the stock Kindle OS. Oh well, at least the source of the problems was found.
Of course, being the happy little idiot I am, I thought I should just restore the firmware via stock OS. I could just re-root and reinstall all of my apps, right? Huge mistake. After buzzing around for thirty seconds, Kindle rebooted. Instead of launching into the stock OS for initial config though, it dropped itself into TWRP 2.0 without me even pressing the power button. TWRP, of course, kindly informs me that the entire device is blank.
I fretted for a little bit, then connected my Kindle to my computer. I already have the adb drivers installed, but Windows shows it as Unknown Device.. It also helpfully insists that it has malfunctioned and tells me to buy a new one.
I turned to Vashypoo's KFU. A bunch of threads said it was stuck in fastboot and KFU could could put it back into regular (4000) boot. However, KFU's bootmode menu is unable to find the device, which is in the TWRP menu.
I tried using command prompt to gain access.
Code:
adb shell
then
Code:
fastboot -i 0x1949 idme bootmode 4000
gives me "/sbin/sh: fastboot not found" which is really scaring me.
Back to KFU, I tried reinstalling stock firmware from there. It apparently installed fine (how?). I doubt that it did, but TWRP is showing some signs of an OS in the device (not sure if its the full OS or not). Bootmode 1 now giving me no response (!)
Since all I really need is access to the SD storage to upload the OS, I tried to reinstall the drivers. Windows implores that its "Unknown Device" driver is the correct one. Trying to choose the "Android Phone" driver sens me back to "Unknown Device" for some reason.
I went back to basics. Used the mount function in TWRP to mount USB storage. AS you can probably guess, absolutely no response from PC.
Dearest XDA-devs i reach out to you. I'm at end. I don't know what else to do. If any of you can help me, I'll be grateful. While I'm not a complete noob (know my way around computer root, experienced jailbreaker/rooter, know basic command line) I'm utterly lost at what to do know. At the risk of sounding like a pretentious prude, I'll make a list of accomplishments to help anyone else who happens to have strangely fallen down the same path I have. As always, if you ever need more details, just ask.
nxtfari​
-----------------------------------------------------------------------------
[X] Reason for stock app crashes (Play Store auto-updated stock Kindle apps)
[X] Reason for boot loop (I'm an idiot/Restore via stock OS)

If you can able to get to adb shell, you won't be able to run fastboot commands from there. Fastboot commands can only be issued to the KF when the KF is in fastboot mode... adb commands can only be issued when the KF is in recovery or booted to the OS. Also, the fastboot command is on your computer (probably in the same directory as adb). If you are in adb shell, it's going to run executables stored on your KF, so you are essentially looking in the wrong place for fastboot. That's why it's telling you that the command can't be found.
If you can get into adb shell while booted into TWRP, you should just be able to just run 'idme bootmode 4000' to get the bootmode back to normal and reboot. Hopefully, your system is intact and is able to boot up. Otherwise, you need to get back to TWRP and you can probably just 'adb push' the stock software onto your /sdcard partiton and use TWRP to install it.

Thank you so much
Thank you so much,
i have the same problem, and with this on a cmd:
#adb shell
#idme bootmode 4000
#reboot
now I have again a kindle fire ^_^
Thanks again

nxtfari said:
Hello all,
I realize that I am a noob. I realize you can see the "posts=1". I realize that you guys have probably seen the above title a million times before.
Click to expand...
Click to collapse
I think I speak for most of the people here when I say, your valid attempt at thoroughly explaining your problem, how you arrived at your problem, and the steps you took to resolve your problem is greatly appreciated and goes a LONG way towards getting the help you need in a timely and orderly fashion.
If everyone addressed their problems this way, our forums wouldn't be constantly inundated with threads that require twenty replies to fix a simple problem when it should only take a couple at best.
Wishful thinking
Sent from my Amazon Kindle Fire using xda premium

[Q] Nexus7 fully bricked with APX mode Only

For updating to android 4.3 , I flashed my N7.
I download the package the factory image from Google .
I entered the fastboot and do things following:
Code:
fastboot erase boot
fastboot erase cache
fastboot erase recovery
fastboot erase system
fastboot erase userdata
fastboot flash bootloader bootloader-flo-flo-03.14.img
fastboot reboot-bootloader
ping -n 5 127.0.0.1 >nul
fastboot -w update image-razor-jss15r.zip
when it come to
Code:
fastboot -w update image-razor-jss15r.zip
there is a warning about the bootloader
At this time ,bootloader seems didn't chaged , it's still grouper not flo.
I modified the android-info.txt to cheat the program and the tragedy start.
The windows remind me there is 6 unknown device. And then it fully bricked.
Now, When I turn on the N7, the screen stay blank.
APX device appear while connect to PC.
Can't enter fastboot mode ,can't enter recovery. even the screen can't be lighten.
Anyone else meet the same trouble or someone can help?
Before this, I have had try the follow tools.
The Nexus7 toolkit--won't work
tegra-android-developer-pack from nvidia website tegra developer tools --won't work
nvflash and wheelie from androidroot.mobi --can't work --(It's a rediculous project I think, If the fastboot work,why we need to flash rom via nvflash)

Sorry, but if you really flashed the files above, you have bricked your N7 completely. Probably you should have looked around and informed yourself before starting to flash files which are not compatible with the N7.
Btw. if you had used wheelie before, you would have some recovery files and you would be able to recover yourself from the brick. So it's not a ridiculous project at all.

I thought it's common sense to read, read, read and read a bit more faqs/how-tos/guides before doing anything to a device.
First of all, 'grouper' is the codename of the 1st gen N7 Wi-Fi (the 2012 model) while 'flo' is the 2nd gen N7 (2013 model), so you can't flash ones image to the other device.
Secondly, your device might be saved, but only if you still can access it with fastboot. If so, then flash the proper images for your device using a toolkit or a guide, if not, then you have a nice paperweight.

37nook said:
For updating to android 4.3 , I flashed my N7.
I download the package the factory image from Google .
I entered the fastboot and do things following:
Code:
fastboot erase boot
fastboot erase cache
fastboot erase recovery
fastboot erase system
fastboot erase userdata
fastboot flash bootloader bootloader-flo-flo-03.14.img
fastboot reboot-bootloader
ping -n 5 127.0.0.1 >nul
fastboot -w update image-razor-jss15r.zip
when it come to
Code:
fastboot -w update image-razor-jss15r.zip
there is a warning about the bootloader
At this time ,bootloader seems didn't chaged , it's still grouper not flo.
I modified the android-info.txt to cheat the program and the tragedy start.
The windows remind me there is 6 unknown device. And then it fully bricked.
Now, When I turn on the N7, the screen stay blank.
APX device appear while connect to PC.
Can't enter fastboot mode ,can't enter recovery. even the screen can't be lighten.
Anyone else meet the same trouble or someone can help?
Before this, I have had try the follow tools.
The Nexus7 toolkit--won't work
tegra-android-developer-pack from nvidia website tegra developer tools --won't work
nvflash and wheelie from androidroot.mobi --can't work --(It's a rediculous project I think, If the fastboot work,why we need to flash rom via nvflash)
Click to expand...
Click to collapse
This is a text book example of what happens when people don't read enough, and don't fully understand what they're doing. And it's not as if there aren't enough guides and how-to's here on XDA... and even on other forums!
Hi, 37nook...
You have almost certainly over-written your bootloader with a completely incompatible version designed for a different tablet (2nd gen Nexus 7)... and thus you are hardbricked. This is why you can't access fastboot mode and why your tablet defaults to APX mode when you hook it up to your PC.
And unless you had at some point run the flatline procedure BEFORE being bricked, your tablet is unrecoverable.
Regarding flatline (nvFlash) itself, it's designed, primarily as an emergency recovery measure... and not as a replacement for fastboot, as you seem to suggest in your post. It's preemptive and needs to have been executed before being 'bricked' in order to generate your own unique 'wheelie blobs', which are created on a per-device basis. Without these, nvFlash alone is useless.
It's not much comfort, I know... but I can only suggest you chalk this down to experience, and next time, with whatever tablet/phone you next end up with.... PAY ATTENTION TO WHAT YOUR DOING, AND READ EVERYTHING, and if you're still a little unsure... POST A QUESTION. Better to feel like you're asking a dumb question (which might not be so dumb), than end up with an expensive paperweight.
Rgrds,
Ged.

AndDiSa said:
Sorry, but if you really flashed the files above, you have bricked your N7 completely. Probably you should have looked around and informed yourself before starting to flash files which are not compatible with the N7.
Btw. if you had used wheelie before, you would have some recovery files and you would be able to recover yourself from the brick. So it's not a ridiculous project at all.
Click to expand...
Click to collapse
nvflash is not a good choice for one to flash his device because of higher risk.
there is too many tools available with a lower risk.
That's the reason I didn't use wheelie before.
You are right, I am a very impatient person, and now I get a lesson.

Erovia said:
I thought it's common sense to read, read, read and read a bit more faqs/how-tos/guides before doing anything to a device.
First of all, 'grouper' is the codename of the 1st gen N7 Wi-Fi (the 2012 model) while 'flo' is the 2nd gen N7 (2013 model), so you can't flash ones image to the other device.
Secondly, your device might be saved, but only if you still can access it with fastboot. If so, then flash the proper images for your device using a toolkit or a guide, if not, then you have a nice paperweight.
Click to expand...
Click to collapse
It's actually a nice paperweight now.
Thank you for your reply which tells me where I went wrong.
It's a really serious mistake, and it's also a painful story.
I can't access it with fastboot ,so said.

GedBlake said:
This is a text book example of what happens when people don't read enough, and don't fully understand what they're doing. And it's not as if there aren't enough guides and how-to's here on XDA... and even on other forums!
Hi, 37nook...
You have almost certainly over-written your bootloader with a completely incompatible version designed for a different tablet (2nd gen Nexus 7)... and thus you are hardbricked. This is why you can't access fastboot mode and why your tablet defaults to APX mode when you hook it up to your PC.
And unless you had at some point run thev flatline procedure BEFORE being bricked, your tablet is unrecoverable.
Regarding flatline (nvFlash) itself, it's designed, primarily as an emergency recovery measure... and not as a replacement for fastboot, as you seem to suggest in your post. It's preemptive and needs to have been executed before being 'bricked' in order to generate your own unique 'wheelie blobs', which are created on a per-device basis. Without these, nvFlash alone is useless.
It's not much comfort, I know... but I can only suggest you chalk this down to experience, and next time, with whatever tablet/phone you next end up with.... PAY ATTENTION TO WHAT YOUR DOING, AND READ EVERYTHING, and if you're still a little unsure... POST A QUESTION. Better to feel like you're asking a dumb question (which might not be so dumb), than end up with an expensive paperweight.
Rgrds,
Ged.
Click to expand...
Click to collapse
Thank you for your suggestion
There is still a question
I actually run these code twice.
First time a got a warning. because of the file content of android-info.txt in image-razor-jss15r.zip
the code
Code:
fastboot reboot-bootloader
must have been executed, and the bootloader is still grouper.
means the code
Code:
fastboot flash bootloader bootloader-flo-flo-03.14_img
didn't work
And the second time
Code:
fastboot -w update image-razor-jss15r.zip
led to the tragedy because I modified the android-info_txt in image-razor-jss15r_zip
What happened in updating image-razor-jss15r_zip ?

37nook said:
Thank you for your suggestion
There is still a question
I actually run these code twice.
First time a got a warning. because of the file content of android-info.txt in image-razor-jss15r.zip
the code
Code:
fastboot reboot-bootloader
must have been executed, and the bootloader is still grouper.
means the code
Code:
fastboot flash bootloader bootloader-flo-flo-03.14_img
didn't work
And the second time
Code:
fastboot -w update image-razor-jss15r.zip
led to the tragedy because I modified the android-info_txt in image-razor-jss15r_zip
What happened in updating image-razor-jss15r_zip ?
Click to expand...
Click to collapse
That is indeed puzzling... if after flashing the incorrect bootloader, and the bootloader is still showing as 'grouper' AFTER fastboot reboot-bootloader, then I'm puzzled.
I'm also further puzzled, that the rest of the flash went ahead... seemingly successfully. I know on my 'grouper', when fastboot flashing back to factory stock... if the bootloader isn't the correct version (for that version of factory stock), the flash aborts with the message 'Incorrect bootloader version'. I'm not sufficiently knowledgable though, concerning the specific details of the second gen Nexus 7 and it's associated stock factory images, to make further comment.
It's just possible (though unlikely), you might just be stuck in APX mode, instead of having a corrupted bootloader.
I assume you've tried all the usual button press combos... detailed here.
If you can boot into the bootloader, your Nexus 7 is recoverable... though I'm not optimistic.
Rgrds,
Ged.

OP, did you ever have any luck?

zamboniman87 said:
OP, did you ever have any luck?
Click to expand...
Click to collapse
+1

Hard Bricked Nexus 7 2012 Wifi NVFlash tool reports "uknown device found"
I just need to know and maybe need help modifying the adb/fb/apx android_apxusb.inf file more specifically targeted toward the nexus 7 for windows xp, my tablet does not boot into fastboot mode so fastboot.exe and adb.exe commands for reviving my tablet is out of the question.The nvflash tool in apx mode would be my only hope as the tablet stays with black screen and does not even show battery icon of it charging.I have been searching day and night for a solution and nothing.I have tried all the button combinations for the weird amount of seconds blah blah and nothing, i have tried everything, believe me...nvflash would be my only hope.I do not have any backed up blob.bin files so I can not use wheelie.exe I even tried someone elses blob.bin but no It is because the uid is unique I understand, I even opened the blob.bin file with notepad and supplied my CSSN code and the first part worked but the next part stumped me.... the rcm version part.I have the Secure Boot Key generated by supplying the CSSN of device in blackthunders tool so I want to run NVFlash.exe --bl bootloader-grouper-4.18.img --sbk 0x10117000 0x761CD506 0x7EE73604 0xBE055203 --sync.I have tried the universal naked drivers 0.73 but "ASUS Transformer Prime APX Interface" shows up in device manager after modifying the android_apxusb.inf file and supplying it the "Hardware device id" from device mamager by right clicking selecting properties etc;.Could there be an entry I could put in the android_apxusb.inf file for nexus 7 that nvflash.exe would not report "Uknown Device Found" and would recognize my nexus 7?.I did get the "ASUS Transformer Prime APX Interface" succesfully installed but nvflash is whining about the device being unknown.Furthermore I would like to make clear that the were no exclamation yellow triangles or anything and the device reported as working properly in device manager.I dearly would appreciate some insight into this.This all happpened on a personal quest to flash another kernel.Sequentially I use "TWRP" to wipe everything that they suggest you wipe" Davlik cache", "data", and two others, but after I wiped them I noticed that those were recommended to be wiped for flashing another ROM.I read just a little more down in the webpage that for flashing a kernel I only needed to wipe Davlik Cache and Data.I restarted the tablet and bam! bootloop.The android colorful spheres and no further.To recover from this I used Skip's Nexus v1.8.0 used the Soft-Bricked Bootloop option on the middle right of the tool's GUI hit the Flash Stock+Unroot buttton and let it run.I would let it run then it would take to long and appear to not progress so I stopped it and re ran it.This happened a few times but I finallly got it to complete, and after the toolkit rebooted my device i saw the "GOOGLE" Text when device booted.I waited for about 2 minutes and I saw it was not getting anywhere so I powered the Nexus 7 device off.
Next thing I did was press power button and nothing.I have tried everyhing, I assume that the solution would be nvflash and a cutomized .INF file pin point targted specifically for the nexus 7 2012 WiFi only tablet.Please help me, if there is no special APXInterface entrie i can edit the android_apxusb.inf file to help nvflash detect my device then it is game over for me.LOL I have seen many people post with a similar and identical poblem that have given up but I'm determned.LOL

Begining to think that it has to do with the nvflash.exe version is why.
After downloading another nvflash.exe with it's acompanying .dll's I found a nvflash program that executed and did not display the familiar "unknown device found" error message.I did it with the "NVidia USB Recovery mode for mobile" driver, nothing fancy.I was surprised that that nvflash version at least ran.The nvflash version i used is the nvflashtf201which is the Tegra3 ICS nvflash.I run that version of nvflash and I at least get this message in the command prompt on Windows XP sp3 after issuing a "harmless" nvflash --sync command.
Nvflash v1.13.87205 started
chip uid from BR is: 0x0000000000000000015d483bd137ec12
rcm version 0X4
Command send failed (usb write failed)
I googled around and some people say that it is because the bootloader is locked, and other say it is because the SBK version is 2 or higher or somthing if im not mistaken.As far as I know is that before I got the gadget hard bricked the boot loader was unlocked.I have even gone as far as to reformating my other computer and installing Unity Linux just to get my device accepting the nvflash commands I have configured the "rules.d" files to what "lsusb" shows I have tried different versions of nvflash like from upload sites and even from nvidias site even tried a newer cable (the newer cable works better but the old one still works)., I downloaded the "Cardhu" "Jelly Bean" stuff from the Tegra Android Development Pack 2.0r6 ( not 2.0r7 because the Tegra Android Development Pack 2.0r7 gives me an md5 hash blah blah error and would not install). The Tegra Android Development Pack 2.0r6 comes with nvflash.The reason I downloaded it was just to get nvflash.I do not have any blob files backed up, I only have the SBK from the chip uid of my device thus would like to try and get a hold of an nvflash in which the "--sbk" command parameter has not been deprecated.I understand that maybe i might not get lucky as the the newer nvflash programs might all have the "--sbk" parameter neutered as well as a few more command parameters.So does anyone know if there is a nvflash version that has the -"--sbk" command paramete support so that I can test and verify if the failed error message above if because I did not supply the program a Secure Boot Key or am I wrong about thinking I need to supply nvflash with a Secure Boot Key in this newer version given the program has a recent algorithm given the program found my devices chip uid as shown in the comman line output above? If thers nothing I can do then can some one comfirm.If there is another nvflash binary that is Tegra3 ICS and has the "--sbk" parameter then point me to where I can find it, or pm me. Thanks

I am almost giving up.
I have been trying to run the tools to check the SBK version.I have read and understand that the reason that I get that usb write error is because of 1.) a locked bootloader. 2.) the SBK version. and the other reasons I am not familiar with.I do not know how to unock the bootloader from APX mode(If that's possible at all.)I did have the bootloader unlocked before running the Nexus 7 toolkit v1.8.0.The option that I ran before my tablet got hosed was the option in the toolkit "Back to Stock" "Current status:" which I had the Soft-Bricked/Bootloop" option selected under the "Flash Stock + Unroot" button which I pressed. After the latter process was finished it rebooted my tablet did it's magic(as I could not see a better way to recover my tablet from the anterior soft brick event which happened before I was led to this process by trying to flash Faux123 kernel) my tablet got stuck at the "Google" with white text and all black screen.The tablet took to long to boot (more then a minute )so I shut it down with the power button.I went to power it on by pressing power button and WALA! hard bricked i'm hosed.The tablet does not boot into fastboot or anything. I cannot use ADB or fastboot either, just the complicated APX mode.I wish tablets were reformatable like computers.But back to the reason for the post;I ran the sbkchek tool and I get a "Segmentation Fault" error.I see many indiviuals in this forum had success running the tool.I am on a 32bit pc with Unity Linux OS.I tried a live cd with Puppy Linux and same error.I tried running the SBKDetect tool that downloaded these forums and the Live CD gives me the "cannot execute binary file" even though it is flagged executable or whatever(I'm not familiar with linux pardon the pun)".I am gonna try to run the tool on Unity Linux and see if I have success but I doubt it will work.Does anyone know if the 2012's Nexus 7 SBK version is SBKv1 or SBKv2?If there are different versions im not sure.I am guessing that the newer than 2012 versions of Nexus 7 have a different SBK version then the earlier ones.I have a question.Could the process of finishing the Nexus 7 Toolkit's "Flash Stock + Unroot" process have changed my bootloader to a locked bootloader and that's why i am getting the RCM Version 0x4 Cannot (Write to USB) error? If it is then what good is it to me if Icannot unlock the bootloader from APX mode? It's a dawg gone shame becuase I have the SBK.Can some one give me some insight or confused dog the right way.lol?

funkyo0o said:
I have been trying to run the tools to check the SBK version.I have read and understand that the reason that I get that usb write error is because of 1.) a locked bootloader. 2.) the SBK version. and the other reasons I am not familiar with.I do not know how to unock the bootloader from APX mode(If that's possible at all.)I did have the bootloader unlocked before running the Nexus 7 toolkit v1.8.0.The option that I ran before my tablet got hosed was the option in the toolkit "Back to Stock" "Current status:" which I had the Soft-Bricked/Bootloop" option selected under the "Flash Stock + Unroot" button which I pressed. After the latter process was finished it rebooted my tablet did it's magic(as I could not see a better way to recover my tablet from the anterior soft brick event which happened before I was led to this process by trying to flash Faux123 kernel) my tablet got stuck at the "Google" with white text and all black screen.The tablet took to long to boot (more then a minute )so I shut it down with the power button.I went to power it on by pressing power button and WALA! hard bricked i'm hosed.The tablet does not boot into fastboot or anything. I cannot use ADB or fastboot either, just the complicated APX mode.I wish tablets were reformatable like computers.But back to the reason for the post;I ran the sbkchek tool and I get a "Segmentation Fault" error.I see many indiviuals in this forum had success running the tool.I am on a 32bit pc with Unity Linux OS.I tried a live cd with Puppy Linux and same error.I tried running the SBKDetect tool that downloaded these forums and the Live CD gives me the "cannot execute binary file" even though it is flagged executable or whatever(I'm not familiar with linux pardon the pun)".I am gonna try to run the tool on Unity Linux and see if I have success but I doubt it will work.Does anyone know if the 2012's Nexus 7 SBK version is SBKv1 or SBKv2?If there are different versions im not sure.I am guessing that the newer than 2012 versions of Nexus 7 have a different SBK version then the earlier ones.I have a question.Could the process of finishing the Nexus 7 Toolkit's "Flash Stock + Unroot" process have changed my bootloader to a locked bootloader and that's why i am getting the RCM Version 0x4 Cannot (Write to USB) error? If it is then what good is it to me if Icannot unlock the bootloader from APX mode? It's a dawg gone shame becuase I have the SBK.Can some one give me some insight or confused dog the right way.lol?
Click to expand...
Click to collapse
I'm in the exact same situation. Nexus 7 2012 hard bricked, shows up in windows with APX driver. Nothing on the screen (stays dark). I have another blob.bin file from my Nexus 7 (bricked one is a friends), but I don't know how to go about modifying blob.bin, if it's even possible, or even finding out this device's SBK. Wish there was a way.

Blob.bin files are encrypted I think.
mzanette said:
I'm in the exact same situation. Nexus 7 2012 hard bricked, shows up in windows with APX driver. Nothing on the screen (stays dark). I have another blob.bin file from my Nexus 7 (bricked one is a friends), but I don't know how to go about modifying blob.bin, if it's even possible, or even finding out this device's SBK. Wish there was a way.
Click to expand...
Click to collapse
Right.I have tried modifying the blob file but I think it would not work.I have not studied nor am I ever gonna reverse engineer a closed source program, nor am I a cryptographer, but nvflash uses some bit strength of encryption to genrate that blob.Since it is encrypted and it would be defeating the purpose of an encryption algorithm existing at all(unless it is a "Proof Of Concept" cracked cypher like WEP) to always generate the same "blob" of "pseudo random data"; and aside from defeating the purpose dumb if it did;Then my guess would be that the probabilty is low to none.But you sure can use the "CSSN" number or "UID" on the box your device came in or a sticker inside your device, then get the "SBCalcv1.1.zip" tool (you should be able to easily find if you google it.There is a link in these forums) and follow the intuitive graphical user interface and it will calculate and display your SBK in a 0x00000000 0x00000000 0x00000000 0x00000000 "format".But getting the SBK was easy what is not goin for me is getting the tools "sbkcheck" and "sbkDetect" (These 2 tools are for Linux only I think) to run without the errors and show me what version.I am not sure if I am wasting my time with the probability my device is SBKv2.If i am not mistaken SBKv2 is the brain child of the manufacturers genius idea of locking the devices down more.So what I understand if I am not mistaken (someone correct me if i am wrong) is that SBKv1 can be used with nvflash but not SBKv1.And having a locked boot loader would make the nvflash tool cough up the dreaded "RCM Version 0x4 Command send failed (USB write failed)" error or whatever the error was lol. Locking the devices down more would increase there sales with the surefire fact someone is bound to brick their device.Instead of investing efforts to facilitate the device's recovery (which probably would be trivial) in case of a human mistake they just seem to want to DRM hardware.If you paid for the darn thing you should have the right to fix or repair the dawg gone thing,it would not hurt anyone but all the patents and intellectual property, registered trademark crap would not allow it.

Someone else blob.bin file might not work but..
I am pretty sure for the reasons i have explained above a blob.bin file will not work which is not unique to the indiviual device it was generated or created on but if you feel that lucky and with all due respect did not understand why then here it is.Good Luck don't say I didn't warn you it would not work.

current solution
mzanette said:
I'm in the exact same situation. Nexus 7 2012 hard bricked, shows up in windows with APX driver. Nothing on the screen (stays dark). I have another blob.bin file from my Nexus 7 (bricked one is a friends), but I don't know how to go about modifying blob.bin, if it's even possible, or even finding out this device's SBK. Wish there was a way.
Click to expand...
Click to collapse
Guys i think there isn't any solution right now, need to wait for Google or some developer to make a proper toolkit to solve that.
till that the only solution i think is to change the Motherboard; that's available on ebay,
but for me i did nothing with my tab, it was updated it self through OTA to 4.4.2.
just working fine but then after a day it got stuck i restarted it,(it took more time then normal to restart) and dead
but what i am confuse of is, if i buy a motherboard and this problem appear again
i am waiting to know what is the mess that take it to APX mode; only after that i will order a motherboard.

Is it still under warranty? You could send it in and have them possibly fix it under warranty. I tried to update to KitKat via the normal method and something went amiss and I went into APX mode as well.
I informed Asus about it and they had me RMA it and it was fixed, free of charge since it was still under warranty (less than year old).
Never hurts to try.

faizleaves said:
Guys i think there isn't any solution right now, need to wait for Google or some developer to make a proper toolkit to solve that.
till that the only solution i think is to change the Motherboard; that's available on ebay,
but for me i did nothing with my tab, it was updated it self through OTA to 4.4.2.
just working fine but then after a day it got stuck i restarted it,(it took more time then normal to restart) and dead
but what i am confuse of is, if i buy a motherboard and this problem appear again
i am waiting to know what is the mess that take it to APX mode; only after that i will order a motherboard.
Click to expand...
Click to collapse
I think I'm the newest member of the hard-bricked Nexus 7 club. Not a happy place to be.
Same thing happened to me last night. Watching YouTube, screen froze, audio kept playing. Went to hard restart, and the Nexus 7 was stuck in a boot loop. Went to boot into fastboot (vol - and power) and it would come up in fastboot, but would not boot to recovery. Restarted a couple times, and now, it's stone dead - won't boot to fastboot, or white Google screen. Nothing. It will connect as an APX device, and I've installed generic drivers. I'm trying to communicate through adb or fastboot, but nothing.
I can't imagine what happened. It was accidentally dropped from about 4 feet earlier in the week - maybe something came loose?
This sucks.

My Nexus 7 (V1) is on APX Mode i have installed the Universal Naked Driver 0.73. Gives it every Chance to bring it back to Android???

I know it's the wrong forum, but....please take a look

I really need the help of one or more of this forums intelligent minds. As I'm sure you'll see, I've posted this in the QA forum, but have had no hits so far....thus the reason for posting here.
So, about 6mos ago, my Nexus 10 stopped working and I couldn't get it back working...eventually moved onto a new tablet, which now I hate....
Anyway, I figured I'd head back to my N10 because I loved it. However, one of the reasons I left it was because it was stuck in bootloop and I was pretty sure it was bricked.
The bad news, I have followed MANY, if not ALL, of the suggestions on getting it back, I just cannot get it to boot. The good news, fastboot connects with the tablet. So, some specifics:
The tablet WILL boot into fastboot and I can send commands and the tablet is unlocked (also, I believe someone said they had issues because they had an older version of ADB and Fastboot. I'm pretty sure I downloaded the 'most current' version 1.4.3). So, with that, I was able to do the fastboot erase functions, such as cache, userdata, system, etc... and then also load the bootloader (mantafm01) and also send the stock .zip file (image-mantaray-....) and the tablet appears to load everything fine. Thumbs up, right? However, when it reboots it stops at the 'erasing' android bot and will not pass that. I left the tablet in that state for a few minutes all the way up to 3 days...no success.
I also tried the above using Wugfresh only to have the same thing occur. So, basically, I am stuck at 'erasing' and I don't know what to do. I feel confident that the tablet has the ability to be brought back to life, I just cannot figure out how/why all of the attempts lead to the same issue.
What I can also tell you is that while fastboot 'sees' the tablet, the tablet does not appear as a device in "My Computer" like it normally did when connecting via USB. I am using the original USB cable and have tried on multiple computers, all to no avail. I've downloaded/installed the drivers, as instructed on many links. Also, while I can get to the 'Recovery Mode' by pressing Power, Volume Up, Volume Down, if I choose "Recovery Mode" on the tablet, it reboots and goes to the 'erasing' screen. I have tried flashing TWRP on the tablet using fastboot as well. And, sometimes, not all the time, the TWRP blue/black screen appears but it will not progress past that screen (i.e., it doesn't go into recovery).
So, if you can, please help. I believe I have followed all of the instructions, but I have to be missing something or not following something correctly. I'm stoked that it looks like it's only soft-bricked, I just can't get it un-bricked.
Thanks in advance! I'm at my wits' end

Try fastbooting a recovery like TWRP thati s updated then flash a rom.

disclaimer: I might be no help at all!
You have fastboot -- go learn all the fastboot commands... you need to know the tools and figure a solution!
erase... hmm? why? What about factory reset? I see you are not using LOS 13 but stock image... need root? Basically, I would factory reset/wipe sdcard, then install recovery (TWRP) [okay, so first you would need to use fastboot to install custom recovery)...THEN, push (fastboot an image.zip (LOS or stock) to sdcards, install, and reboot!
Good to have WUG... another tool in the chest (I have never seen it or used it)
Ok, so one clue is that if your computer cannot see it, that says to me RED FLAG... ADB drivers? but you say fastboot works, hmm... I think this is the problem... Koush's universal ADB drivers? official Google drivers? Could these help!
Erasing screen? Hmm...
I would say, for the hell of it, try flashing different ROMs, Recoveries, and Drivers.... you are basically trying to...
Factory Reset/wipe SDcard [system, cache, ... everything], Flash custom recovery (optional), then, some how (fastboot or mycomputer) get an image on to /sdcard, then, install, then, reboot!
Good luck!
luckyheel said:
I really need the help of one or more of this forums intelligent minds. As I'm sure you'll see, I've posted this in the QA forum, but have had no hits so far....thus the reason for posting here.
So, about 6mos ago, my Nexus 10 stopped working and I couldn't get it back working...eventually moved onto a new tablet, which now I hate....
Anyway, I figured I'd head back to my N10 because I loved it. However, one of the reasons I left it was because it was stuck in bootloop and I was pretty sure it was bricked.
The bad news, I have followed MANY, if not ALL, of the suggestions on getting it back, I just cannot get it to boot. The good news, fastboot connects with the tablet. So, some specifics:
The tablet WILL boot into fastboot and I can send commands and the tablet is unlocked (also, I believe someone said they had issues because they had an older version of ADB and Fastboot. I'm pretty sure I downloaded the 'most current' version 1.4.3). So, with that, I was able to do the fastboot erase functions, such as cache, userdata, system, etc... and then also load the bootloader (mantafm01) and also send the stock .zip file (image-mantaray-....) and the tablet appears to load everything fine. Thumbs up, right? However, when it reboots it stops at the 'erasing' android bot and will not pass that. I left the tablet in that state for a few minutes all the way up to 3 days...no success.
I also tried the above using Wugfresh only to have the same thing occur. So, basically, I am stuck at 'erasing' and I don't know what to do. I feel confident that the tablet has the ability to be brought back to life, I just cannot figure out how/why all of the attempts lead to the same issue.
What I can also tell you is that while fastboot 'sees' the tablet, the tablet does not appear as a device in "My Computer" like it normally did when connecting via USB. I am using the original USB cable and have tried on multiple computers, all to no avail. I've downloaded/installed the drivers, as instructed on many links. Also, while I can get to the 'Recovery Mode' by pressing Power, Volume Up, Volume Down, if I choose "Recovery Mode" on the tablet, it reboots and goes to the 'erasing' screen. I have tried flashing TWRP on the tablet using fastboot as well. And, sometimes, not all the time, the TWRP blue/black screen appears but it will not progress past that screen (i.e., it doesn't go into recovery).
So, if you can, please help. I believe I have followed all of the instructions, but I have to be missing something or not following something correctly. I'm stoked that it looks like it's only soft-bricked, I just can't get it un-bricked.
Thanks in advance! I'm at my wits' end
Click to expand...
Click to collapse

Why not try this
I have not had this problem with my Nexus 10 but I did once with my Nexus 7 and it may help you.
Instead of trying to flash TWRP and run it (which is not working for you) why not boot into a temporary copy of TWRP and then work from that? To flash TWRP normally (persuming you had renamed the img file to TWRP which makes it easier) you would enter 'fastboot flash recovery twrp.img'. Instead of doing that type 'fastboot boot twrp.img'. This boots into TRWP and from there you will be able run all the options and from there flash TWRP and other images as normal.
If you are having problems with drivers have you used 'USBDeview' ? Run this as Administrator and delete all references to any phone or tablet USB driver and particularly look for devices with Vendor ID '18d1' or '04e8'. Just select them, right click on them and select 'Uninstall Selected Devices'. When they are all cleared reboot your computer and plug your tablet in and it should install the correct driver.
Another option I used successfully with a Nexus 7 in a boot loop was to connect it while running Linux. I don't have a Linux on a computer so I installed one in 'Oracle VM VirtualBox' I don't know Linux but after Googling for help I installed Peppermint Linux and then ADB for Linux. I downloaded the 'TWP' image into a folder in Linux and any other images I wanted. Connect your tablet to the USB port and then on the top menu in VirtualBox select 'Devices' then 'USB' and tick the option which shows your tablet. I then went into what we call a command prompt in Windows but which they call 'Terminal'. Then type 'ADB devices' and if you see it on the list use ADB instead of fastboot. As I mentioned my Nexus 7 was in a boot loop so I typed 'ADB wait-for-device' and as soon as it looped to a point where ADB could see it then the looping stopped and I could flash the images and recover the tablet.
All the best. I hope you are successful.

As long as you can get into bootloader mode, your good.
NOW
If you can't get into boot loader mode? as far as I know...
You're ****ed.
Unless you want to set up usb boot (might not work on Exynos, idk, this is magic to me) and solder the connectors and flash it like they do in factories. That's next level **** too, and considering an N10 is 100$ on amazon you're better off just grabbing a new one.