yashsingh1/xdaforums huggingface dataset:
[Nexus 7 Q&A, Help & Troubleshooting] bluone:
It worked

after several hours.... it finally worked

Thank you very much, now I can use again my nexus 7
[Nexus 7 Q&A, Help & Troubleshooting] subaruemt:
still hopelessly stuck

hello,

So I have absolutly no experience doing this. I have a 2012 nexus 7 and i had it sitting for a few months, i went to boot it up and it was boot looping at the google screen. I factory reset and everything else nothing, followed these steps exactly to a t and nothing. there is no os on it, no nothing.... help

mike
[Nexus 7 Q&A, Help & Troubleshooting] shawnbrennan55:
I would not even bother flashing a factory image on Grouper. Try a custom ROM like XenonHD, Chroma, or Optipop. Flash the latest TWRP recovery and use either Slim GApps zero or TK GApps mini, micro, or nano.
[Nexus 7 Q&A, Help & Troubleshooting] subaruemt:
Step by step directions??
[Nexus 7 Q&A, Help & Troubleshooting] shawnbrennan55:
I assume you have Fastboot working on a Windows or Linux PC and you can get your tablet into bootloader mode?
[Nexus 7 Q&A, Help & Troubleshooting] subaruemt:
Yes and Windows and I can get it to recovery
[Nexus 7 Q&A, Help & Troubleshooting] shawnbrennan55:
[MENTION=6740070]subaruemt[/MENTION]

I highly recommend that you do a bunch of research first, but here are the basic steps:

- Connect tablet to PC

- From a terminal window on the PC type "fastboot reboot bootloader"

- Download latest TWRP from here ( http://teamw.in/devices/asusnexus72012wifi.html )

- Flash TWRP by typing "fastboot flash recovery filename.img"

- Type "fastboot reboot recovery"

- Flash ROM of choice from the TWRP install menu. Here are a links to XenonHD and Chroma, there are many others:

- http://xdaforums.com/showthread.php?t=1826484

- http://xdaforums.com/nexus-7/development/rom-chroma-04-05-2015-layers-t3073921

- Flash GApps from TWRP. I recommend Slim zero or TK mini, micro, or nano

- http://xdaforums.com/android/software/tk-gapps-t3116347

- http://xdaforums.com/slimroms/general/gapps-official-slim-gapps-trds-slimkat-t2792842

- Optional - flash a custom kernel from TWRP. I like Franco with Chroma and M-Kernel with Xenon

- http://xdaforums.com/showthread.php?t=1823671

- http://xdaforums.com/showthread.php?t=2168787

Edit: [MENTION=4194102]comminus[/MENTION] sorry for the extended off-topic
[Nexus 7 Q&A, Help & Troubleshooting] subaruemt:
OK so I installed twrp I am not sure how to install the rest
[Nexus 7 Q&A, Help & Troubleshooting] tetakpatak:
He wrote you all links, man. Just wipe system, data, cache and dalvik cache then flash zips of ROM and gapps

tetakpatalked from Nexus 7 flo
[Nexus 7 Q&A, Help & Troubleshooting] rbeavers:
Boot into twrp click install choose your zip file, slide to flash. rom then gapps.
[Nexus 7 Q&A, Help & Troubleshooting] W@r10ck:
I hope this works. I messed up my device after following this http://xdaforums.com/showthread.php?t=2380913. I have a nexus 7 2013 LTE ver.I think the image was the culprit.I hope so.

Edit: one question,how do i install chroma that i downloaded in my computer if i cant boot my device so i can copy the zip file and flash through twrp. Can i sideload it? Through a command?(but its a zip file) i feel so noob on flashing this device lol.

Edit: Managed to solve it(whew)
[Nexus 7 Q&A, Help & Troubleshooting] eldar4uk:
it really works, thank you guys for info
[Nexus 7 Q&A, Help & Troubleshooting] dalanik:
After updating to 4.2 my Nexus started rebooting and doinf all sorts of weird stuff. I am not sure if it is hardware (I am begining to think it is as time passes) or software. I did factory reset from the menu and factory reset from the bootloader (by holding power+volup/voldn) and it still won't boot. Right now it boots and gets to the "connect to wifi" part and then reboots and stays on the booting animation. So I can't enable developer options on the USB, since it won't boot... any chance I can flash it to 4.1.2? Or should I take it for warranty repair/replacement?
[Nexus 7 Q&A, Help & Troubleshooting] Silesh.Nair:
Developer options are hidden in 4.2 by default. To see it, you need to go to settings->About Phone-> Build No ( last menu entry ) and click on it 7 times. It will then show up in settings.
[Nexus 7 Q&A, Help & Troubleshooting] dalanik:
I know that. I can't get Nexus to boot, it is stuck on booting animation, that is my problem, not enabling the options...

Disregard, I returned it for repair/replacement.
[Nexus 7 Q&A, Help & Troubleshooting] padremayi:
Excellent tutorial, in this way I restored 4.1.2 version that works with iPhone's bluetooth tethering (it doesn't work with 4.2.1) :good:
[Nexus 7 Q&A, Help & Troubleshooting] WhyWasThatFor:
Any advice appreciated

Hi. I'm following guide and am stuck at the "fastboot flash radio" command. I'm getting the following error "error: cannot determine image filename for 'radio'". Am I missing something? Any assistance greatly appreciated.
[Nexus 7 Q&A, Help & Troubleshooting] comminus:
Assuming that you have a GSM/HSPA+ Nexus 7 and you downloaded the 4.2 factory image for nakasig you should have the radio img (radio-tilapia-1231_0.10.0_1021.img) extracted from the zip, and the command should be:

> fastboot flash radio radio-tilapia-1231_0.10.0_1021.img

The aforementioned command assumes the radio image is the the same directory that the fastboot command is being run from.
[Nexus 7 Q&A, Help & Troubleshooting] Kibab:
I have received an OTA update for Nexus 7 yesterday, after flashing it started to reboot every 2-3 minutes. I solved the problem by downloading stock 4.2.1 image and flashing all partitions except userdata (I didn't want to lose my precious data).

It works quite good now, no sudden reboots. So I think it's just ****ed up OTA update, 4.2.1 itself is not buggy.
[Nexus 7 Q&A, Help & Troubleshooting] padremayi:
You must "run the commands listed in flash-all.sh in sequence".

The commands depend on your Nexus (WIFI or 3G) and OS version.
[Nexus 7 Q&A, Help & Troubleshooting] jsmasterx:
wifi guide little error but not so bad haha :P

You would need to remove the line

- Fastboot flash radio

from the wifi setup. Some users might have some issue trying doing that lol

btw great work to have taken the time to do that tutorial it is well explained for anybody who would like to know a little more about android. They will now see that android is not so bad at all
[Nexus 7 Q&A, Help & Troubleshooting] comminus:
Thanks for catching the typo! It is now updated.
[Nexus 7 Q&A, Help & Troubleshooting] jimmycrackcorn1:
Don't know where to put this but maybe mods could feel free to move it,

New to site, haven't completed my "10" to be able to post this where its needed, but not new to flashing ROMs & all that good stuff. I flashed the ROM Eclipse 3.1 I picked up in Android Original Development forum. I didn't like it, home screens didn't layout correctly. I booted into CWM to flash my last backup & CWM would not view them through the conventional method, but they were found on my SD card under the CWM folder but I couldn't flash them that way. I would select them & the screen would just refresh. No prob, figured I'd just flash a different ROM on the card & do some restoring the hard way through app extractor or TB. Flashed new ROM, DL"d the two restoring apps & they couldnt find any of my nandroids. Pictures on sd card are still there & so is everything else thats suppose to be on my SD except being able to flash or pull from my nandroids.

Did I partition my SD somehow? I've never dabbled in that but its all I can think of at this point. When in CWM & I selected " choose zip from SD" I was presented with an option i be never seen before. It was an option of choosing "O" "asec' or "obb' if I remember correctly. I've seen those before in root browsers but have never had them presented in CWM.

I usually figure thing out myself but this one has me stumped. Are the nandroids I'm seeking partitioned somewhere.

Again I apologize if this is in a weird spot, it just seemed like a person/persons with knowledge would be present & answering questions in this there.
[Nexus 7 Q&A, Help & Troubleshooting] devra1:
Thanks a lot for this guide, I really appreciate it. :good:

My Nexus 7 had already been OTA'd to 4.2.1 and rooted with WugFresh toolkit, but when I saw this guide I just had to re-flash it manually, to learn how to do it. The description was very clear and everything went fine.

Before starting, I made a backup with the WUG toolkit, and another with Titanium (just the user Apps). I suspected that the Titanium directory in sdcard would get wiped so I uploaded the backup to Dropbox.

After manually flashing according to the guide, and re-rooting with the toolkit, I downloaded from Dropbox and restored. The only thing I seem to have lost is the icons on all my home screens (a lot) which I now have to drag back to the places they were before.

I would just like to ask one question:

Is it somehow possible to backup the home screens, either with Titanium or some other means?

Restoring all my icons to where I want them is going to take longer than the flashing took.
[Nexus 7 Q&A, Help & Troubleshooting] Mach3.2:
Use a custom launcher with the backup feature like nova or you can try restoring the launcher.apk's data from the nandroid.

Beamed from my Grouper.
[Nexus 7 Q&A, Help & Troubleshooting] manekineko:
So am I correct in understanding that flashing a factory image with a line like:

>fastboot -w update image-nakasig-jop40d.zip

Actually flashes not only system but also recovery?

Is there any way to back up the stock recovery and system so I can flash only recovery without system and vice versa?

---------- Post added at 03:10 PM ---------- Previous post was at 03:01 PM ----------

Also, another question.

What's the reason for erasing the bootloader and rewriting it:

No one is actually using any alternative bootloaders are they? So the bootloader should always be in a factory state, right?

It just strikes me that this is a pretty risky step, as from browsing around the forums, erasing your bootloader and then not getting a new one written for some unexpected reason before rebooting is pretty much the only way to fully brick a Nexus 7 right?
[Nexus 7 Q&A, Help & Troubleshooting] comminus:
You are correct, boot, system, user data, and recovery are flashed in that step. The '-w' erases userdata and cache partitions as well.

Stock recovery and system images are in the zip (image-nakasig-jop40d.zip) and can be extracted and flashed using fastboot:

> fastboot flash system system.img
> fastboot flash recovery recovery.img
[Nexus 7 Q&A, Help & Troubleshooting] comminus:
I've seen this misconception a few times, so I'm glad we can address it.

The command "fastboot erase boot" is not erasing the bootloader but rather the kernel partition. Boot loaders do get updated from time to time but the process is to flash the bootloader and then reboot to fastboot mode. Never under any circumstance should we use fastboot to erase the bootloader; this is a highly effective way to make a brick.
[Nexus 7 Q&A, Help & Troubleshooting] pekayatt:
Car I root or flash a new rom without using fastboot or ADB? Mine N7 is without connection to the PC... :/
[Nexus 7 Q&A, Help & Troubleshooting] comminus:
The only way to flash without access to a computer is by using a custom recovery image. I'm going to guess you don't have that either since you'd need a computer to flash that anyway.

So your mission is to get access to a PC running OSX, Windows, or Linux. :thumbup:
[Nexus 7 Q&A, Help & Troubleshooting] WhyWasThatFor:
Apologies for the late reply and thanks for the pointers (and also comminus). I ran commands in flash-all.sh and it worked perfectly.
[Nexus 7 Q&A, Help & Troubleshooting] Wrixituz:
Thank you for this awesome guide! worked fine for me exept that the "> fastboot -w update image-nakasig-jop40d.zip" the first time Failed for me.. thought it was going to fail like that when the guide said it was normal but that i missunderstood it! :D i finished up the guide and rebooted the device but it said "booting failed" so i went back and did step 4 again, then it worked :) so if anyone gets this problem, just go back to step 4 and do it again :)

Thx / Wrix
[Nexus 7 Q&A, Help & Troubleshooting] enablee:
my nexus 7 getting stuck on the lunching loading screen.

no matter what rom im installing =/

how can i solve it?
[Nexus 7 Q&A, Help & Troubleshooting] bobgodd:
Just acquired a bricked Nexus 7 2012 Wifi from a friend and trying to push an OS with these instructions and everything goes well until this bit:

sending 'system' (649455 KB)...

It's basically stuck there (~30 minutes). Any ideas? When trying to normally boot it never gets past the google screen. I can enter bootloader mode, and can also enter recovery, but cannot seem to flash the system image.

Any help is much appreciated!
[Nexus 7 Q&A, Help & Troubleshooting] cptsashimi:
Have you tried a different cable and different USB port? Sometimes a bad cable can hold you up.
[Nexus 7 Q&A, Help & Troubleshooting] Akken94:
fail to execute oem unlock

Hello,

I am very happy to find that my device is able to respond to the command. However, I cannot execute the oem unlock. It stuck at erasing user data. please help me, cannot use my nexus 7 in the past 5 month.
[Nexus 7 Q&A, Help & Troubleshooting] bobgodd:
Tried the 4 cables I had on-hand, unfortunately don't have oem cable from Nexus.

I was able flash bootloader, flash recovery, and basically everything but flash system partition. So I flashed twrp, and loaded cm10 and flashed that. So, it's working now lol... Not the way I hoped it would, but not bad.
[Nexus 7 Q&A, Help & Troubleshooting] Charkzilla20:
I have a problem. I'm trying to flash my nexus 7 with 5.1.1, and when using the "fastboot flash radio" command, it immediately comes back with "writing 'radio'... failed (remote: (BadParameter))". What is this and how could I possibly fix this?

Edit: figured out it was the wrong factory image -_- how embarrassing.

Now i have a new problem. The "fastboot flash userdata" is coming back with "writing 'userdata' ... failed (remote: (InvalidSize))". Now I don't know what is causing this...
[Nexus 7 Q&A, Help & Troubleshooting] nicolas vds:
Hi there everyone.

I have an issue where I need help.

My sister has a nexus 7 that is soft bricked at least I hope so.

Now I have no idea on which version of Android she was and I am guessing usb debugging isn't enabled but I cannot check it.

I also don't have an original cable to connect the tablet on the computer, I'm using the cable of my galaxy-s4.

When I fill in fastboot devices I m getting the serial number of the nexus. I was also able to erase everything but when I am trying to flash the bootloader it doesn't work.

Could this be because usb debugging isn't enabled?

Is there a way around it with a bricked device?

Could it be because of the cable? But it can communicate with the computer and it charges also.

Please help :(

It's the nexus grouper variant. I'm still able to get in fastboot mode but nothing else, no recovery. Unlocked
[Nexus 7 Q&A, Help & Troubleshooting] tetakpatak:
Can you upload all the screenshots (or c&p the text) of all your CMD text lines by failed bootloader flashing? Maybe it helps to detect the problem.

tetakpatalked from Nexus 7 flo
[Nexus 7 Q&A, Help & Troubleshooting] 1731:
I'm not at home for the weekend but I will do it asap

Envoyé de mon ONE A2003 en utilisant Tapatalk
[Nexus 7 Q&A, Help & Troubleshooting] nicolas vds:
screenshots

here are the screenshots located :

https://www.dropbox.com/sh/tyw387znlx430bo/AACGhKv21p38n5XGteeevRtJa?dl=0

Thanks for the effort,I've no idea what I'm dooing wrong :(
[Nexus 7 Q&A, Help & Troubleshooting] tetakpatak:
Hello mate, OK, I see you did several things quite wrong. First one, a little one, here:

View attachment 3528833

As you have saved the proper bootloader for your device as well as the fastboot.exe in that folder, the only problem was that you have forgotten to write .img at the end of the file name.

You have done the same little mistake here, but this one could have had a fatal consequence, for you have tried to flash the bootloader of the Nexus Flo=Razor=2013 on your Nexus Grouper=Nakasi=2012:

View attachment 3528844

If you have added .img at the end of the file name here, your tab would die at that moment of successful flashing.

Here was also just a minor problem, that you have begun the command with space, which you shouldn't have done- it was probably the only problem:

View attachment 3528848

Be careful, use only the files for your device [emoji6]

tetakpatalked from Nexus 7 flo
[Nexus 7 Q&A, Help & Troubleshooting] nicolas vds:
I will try to start the command without space.

But I had also added .img to the file name without success, I will try to get a print screen of that tonight.
[Nexus 7 Q&A, Help & Troubleshooting] tetakpatak:
Good idea, please upload it as attachment to your post, it saves time.

Also c&p of the entire cmd text instead of the screenshot would serve.

tetakpatalked from Nexus 7 flo
[Nexus 7 Q&A, Help & Troubleshooting] nicolas vds:
I've made thing worse

I'm unable to upload them as attachement, it keeps on telling me that the files are too big.

I've pressed the flash all command but I had changed the name of the bootloader image before, so now I only got a black screen and I'm unable to go to fastboot anymore :(

Before my computer recognised the device as android phone, android bootloader interface.

now it recognises it as other, APX

Any idea on what I could do?
[Nexus 7 Q&A, Help & Troubleshooting] tetakpatak:
Nope, I actually fail to understand what really happened.

Text file is very small btw. Pity you didn't flash manually, like comminus has desribed. Can you not start your tab in bootloader mode anymore?

tetakpatalked from Nexus 7 flo
[Nexus 7 Q&A, Help & Troubleshooting] cptsashimi:
I used this post awhile back and maybe it would help you. It talks about booting out of APX mode. Don't know if it would help, but worth a try...

http://xdaforums.com/showthread.php?p=37606945
[Nexus 7 Q&A, Help & Troubleshooting] nicolas vds:
Re

Thanks, I have tried that already but had no luck.

I'm afraid I have corrupted my bootloader and so bricked the tablet.

From what I've understood on the forums I'm afraid the only remaining thing to try is replace the motherboard :( but I really don't think I could pull that off without breaking or disconnecting some cables inside..
[Nexus 7 Q&A, Help & Troubleshooting] wizard_af:
My Nexus 7 2012 WiFi only is not booting at all. So I cannot enable USB debugging. Any way out ? Help please..
[Nexus 7 Q&A, Help & Troubleshooting] :
Does it boot into the bootloader menu? You can flash the factory image with fastboot, usb debugging not required.
[Nexus 7 Q&A, Help & Troubleshooting] wizard_af:
Nope. No display so far. Can I use this guide with Linux ( Ubuntu ) ?
[Nexus 7 Q&A, Help & Troubleshooting] rooster0076:
Flashing MRA58V

I need help understanding this step: fastboot flash bootloader bootloader-grouper-4.23.img

fastboot erase boot

fastboot erase cache

fastboot erase recovery

fastboot erase system

fastboot erase userdata

fastboot flash bootloader bootloader-grouper-4.23.img

fastboot reboot-bootloader

fastboot -w update image-nakasi-jwr66y.zip

I dowloaded latest MRA58V from google site, unzipped and placed in platform tools directory but I don't see a bootloader img. to flash. So I am not proceeding till I understand what to do here. I don't understand this step or command line. Can someone help? I do know I have TWRP.

Thanks
[Nexus 7 Q&A, Help & Troubleshooting] :
Not sure on the linux stuff. If the device isn't turning on at all, you may be pickled.

Is there signs of it turning on, but just no display? Or it seems dead? If you plug it in to a computer, is it recognised at all?
[Nexus 7 Q&A, Help & Troubleshooting] wizard_af:
Yes. Under device manager, as unknown device.
[Nexus 7 Q&A, Help & Troubleshooting] :
One thing you could try. My N7 occasionally gets used until it dies. And in the past while, I'll plug it in and No battery symbol appears, and I can see the screen is very dimly lit, and discolored. It won't turn on, even if I charge it over night. This just started the past year.

So I read up, and found somewhere about disconnecting the battery. You can carefully pry the back off. Starting at a slot near the USB port. Disconnect the battery cable, wait a minute, and reconnect the cable. Be careful not to damage anything.

Then reconnect to charger, and boom… mine is alive.

Your issue may be completely different, but worth a shot.

Edit: another thing. Did you do or flash anything before this happened?
[Nexus 7 Q&A, Help & Troubleshooting] :
Is there a reason you need to flash the bootloader? Are you trying to upgrade or downgrade it? If you are just reflashing the same stock version, its not necessary. ;)

Edit: also, are you typing in the correct bootloader version that you downloaded? Is the bootloader image there after you extracted? Perhaps its not in the image you downloaded?
[Nexus 7 Q&A, Help & Troubleshooting] wizard_af:
Thank you. This is my first flash attempt. It was a Lolipop update gone wrong.
[Nexus 7 Q&A, Help & Troubleshooting] :
So battery pull failed to help? And you still can't enter bootloader mode?
[Nexus 7 Q&A, Help & Troubleshooting] wizard_af:
I haven't tried battery pull trick. Will give it a try and update.
[Nexus 7 Q&A, Help & Troubleshooting] tetakpatak:
Yes, it works much easier than with Windows, as Linux needs no drivers. Just install adb & fastboot in Linux and off you go.
[Nexus 7 Q&A, Help & Troubleshooting] rooster0076:
Correct. It's not there after I extracted file? What bootloader image do I use and where do I get one? Trying to upgrade to latest stock 6.0 Lollipop from Google site (mra58v).

If it's not necessary what command line do I use to just flash stock image?
[Nexus 7 Q&A, Help & Troubleshooting] tetakpatak:
Mate, please spend a bit of time learning about ADB and fastboot, it is worth the time. Using these mighty tools is comparable to a heart transplantation by the human beings.

Besides, there is no mra58v for Nexus 7 2012, it will not get Android 6.0 update.

Maybe you are trying to flash a factory image for another device, which would be a death of your tab.

tetakpatalked from Nexus 7 flo
[Nexus 7 Q&A, Help & Troubleshooting] :
Yup, not sure what factory image you have, but its not for your device. So no updates for bootloader either.

As said above, if you flash another devices firmware, you'll be in real trouble. ;)
[Nexus 7 Q&A, Help & Troubleshooting] rooster0076:
I got it! I didn't open the tar file and extract properly. All the files were there. Thank you anyway.
[Nexus 7 Q&A, Help & Troubleshooting] tetakpatak:
I think he didn't get it :)

tetakpatalked from N7100
[Nexus 7 Q&A, Help & Troubleshooting] Sam.rosar:
Hello ..i have a nexus 7 3G...tilapia...and i tryed to add on it 4.4.4 kitkat android (was 5.1)...i did it the way a forum post somewhere here...and now..when i connect it to pc...it only show "GOOGLE" and stay on till the battery get down. i tryed to reboot it in recovery mode....it only restart with same logo..and when i plug it /unplug it to pc...it ain't descovered by pc..even if before i did my awfull mistake it did.. Any way i could repair it...realy need it...
[Nexus 7 Q&A, Help & Troubleshooting] tetakpatak:
[MENTION=2553927]45rpm[/MENTION] did you use buggy bootloader jwr66y? If yes, read the first sentence of the first post, bold letters, might help: jwr66v is the one you need.

[MENTION=7127963]Sam.rosar[/MENTION] what happens when you press power button & volume down buttons at the same time?

tetakpatalked from Nexus 7 flo
[Nexus 7 Q&A, Help & Troubleshooting] 45rpm:
[MENTION=5051515]tetakpatak[/MENTION] Thx for the response. I've tried every img from 4.3 to 5.1.1 dropping down to a previous version each time with the same exact result and failure point.
[Nexus 7 Q&A, Help & Troubleshooting] tetakpatak:
Ooooh, that sounds bad :(

Did you also try to flash manually, by using the commands one by one? The flashing tools are less reliable in general, try like described in the first post. Good luck!

tetakpatalked from Nexus 7 flo