[Q] NO OS Installed on Nexus 7 - Nexus 7 Q&A, Help & Troubleshooting

i try rooting my N7 but wiped all data on in so i have no os and im stuck in the google screen and cant do anything. i tried anything that i understood on forums, my pc wont recognize it. nexus root kit doesnt seem to work cause it say adb device not found and fastboot cant find it either. so am stuck with a n7 with no os, have tried reinstalling the stock os image from google but i cant boot the tablet at all it just stays in that google screen.
so if anyone can help me atleast try to reinstall the stock os ......because i am a noob

You have to be in boot loader mode.
Sent from my Nexus 7 using Tapatalk 2

Adb has to find the device before the adb and fastboot commands will work
Sent from my Nexus 7 using xda app-developers app

I did the same thing to my 7 the second day after I bought it. What you described is exactly what I had experienced. This is what I did to restore my 7. I kept holding the power button until it turned off. Afterwards, I charged it for a while cause the battery was low.Then I got the tablet to go into fastboot mode by holding volume down 1st and then the power button. After that, I flashed using the Nexus 7 toolkit. Upon flashing, download 4.1.2 firmware using the toolkit and flash that to your tablet. 4.2.1wouldn't work for me. That brought my 7 back to life in new stock form.
In conclusion, I re-rooted using the toolkit and flashed a custom 4.2.1 rom using TWRP recovery.
If you can get your 7 into fastboot and your computer still will not recognize your 7, reinstall the drivers to your computer. I used PDA drivers. That worked for me.
I hope this works for you.

Is OK guys just use this http://forum.xda-developers.com/showthread.php?t=:D
Sent from my Nexus 7 using xda premium

try this
SiLeNtZoR said:
i try rooting my N7 but wiped all data on in so i have no os and im stuck in the google screen and cant do anything. i tried anything that i understood on forums, my pc wont recognize it. nexus root kit doesnt seem to work cause it say adb device not found and fastboot cant find it either. so am stuck with a n7 with no os, have tried reinstalling the stock os image from google but i cant boot the tablet at all it just stays in that google screen.
so if anyone can help me atleast try to reinstall the stock os ......because i am a noob
Click to expand...
Click to collapse
try this
try the site priyanairmumbai.blogspot.in/2014/01/to-upgrade-nexus-7-and-2013-models-to.html

SiLeNtZoR said:
i try rooting my N7 but wiped all data on in so i have no os and im stuck in the google screen and cant do anything. i tried anything that i understood on forums, my pc wont recognize it. nexus root kit doesnt seem to work cause it say adb device not found and fastboot cant find it either. so am stuck with a n7 with no os, have tried reinstalling the stock os image from google but i cant boot the tablet at all it just stays in that google screen.
so if anyone can help me atleast try to reinstall the stock os ......because i am a noob
Click to expand...
Click to collapse
I DID THE SAME THING
our devices are not "bricked", just screwed really bad...
did you manage to fix it?

.
..

Related

I think i bricked it!! Help me please!

So I installed Paranoid rom and wiped just like normal but now its stuck at the JB splash screen. My pc wont recognize it in fastboot and I cant get into recovery. Did I brick this thing or what?
poliati said:
So I installed Paranoid rom and wiped just like normal but now its stuck at the JB splash screen. My pc wont recognize it in fastboot and I cant get into recovery. Did I brick this thing or what?
Click to expand...
Click to collapse
how do you know for sure its not recognizing it in bootloader?
When I plug in my nexus I can't do anything. The hardware buttons don't work. I don't see anything in the drivers when I plug it in either.
Sent from my HTC One X using xda premium
Well, just to let you know, you haven't bricked it. Bricking something means you can't access the device what so ever i.e. it won't boot, won't go into recovery/bootloader mode etc. As to fixing it, I'm not sure. Can the device turn off and on? Have you got drivers installed properly (was fastboot and adb working before this happened)?
deleted
I am sure you tried every option , have you tried adb reboot recovery command, when u turn on phone, or adb reboot bootloader. If the manual way does not work, for example when device is powered off (volume down then holding power for 10 seconds). Let me know. Need more details.
Sent from my HTC Glacier using xda premium
Ok I'm trying that now.
Sent from my HTC One X using xda premium
Hi I think I'm facing the same issue as poliati. I tried to flash it back to stock image but the process freezes at "sending 'system' <438656kb>. Can someone please help?
r1tesh said:
I am sure you tried every option , have you tried adb reboot recovery command, when u turn on phone, or adb reboot bootloader. If the manual way does not work, for example when device is powered off (volume down then holding power for 10 seconds). Let me know. Need more details.
Sent from my HTC Glacier using xda premium
Click to expand...
Click to collapse
So rebooting isnt the problem but getting into recovery or even getting my computer to recognize my device is what i need help with. The entire thing freezes when im in bootloader and try to plug into my computer. So i have to reset by holding down the power button. Ive installed and uninstalled drivers through wugfresh toolkit and nexus 7 toolkit.
poliati said:
So rebooting isnt the problem but getting into recovery or even getting my computer to recognize my device is what i need help with. The entire thing freezes when im in bootloader and try to plug into my computer. So i have to reset by holding down the power button. Ive installed and uninstalled drivers through wugfresh toolkit and nexus 7 toolkit.
Click to expand...
Click to collapse
Try plugging in and then going to boot loader.
Sent from my Nexus 7 using xda premium
When I plug it in, I can't do anything at all.
Sent from my HTC One X using xda premium
CharliesTheMan said:
Try plugging in and then going to boot loader.
Sent from my Nexus 7 using xda premium
Click to expand...
Click to collapse
That doesnt work either. The thing is, I can use the volume buttons BEFORE I plug it in, but as soon as I plug it into a computer the tablet freezes and i have to reset it.
So ive uninstalled all drivers including the SDK and reinstalled everything and im still stuck at the bootloader. Im starting to believe that its pretty much a lost cause. Can anyone help with trying to figure out what i may have to do now.
If you can get into the bootloader, you're not bricked, nor is it a lost cause.
Since you uninstalled them reinstall the drivers. Download the factory image (nakasi) from here, and then follow these instructions to use cmd and fastboot to reflash the stock ROM.
Ok I will try this.
Freakin love this site!!!
OK, so i now have everything up and running after about 2 hours of uninstalling and installing everything. Turns out that my cpu (or me) was duplicating the drivers. I feel dumb for that

Nexus 7 boot errors

Hello all,
Im afraid i may have bricked my nexus 7 ...
I tried to flash the new clean rom 4.2 over an older rom, but now the tablet wont get past the boot screen animation and i cant even get it to boot into the recovery, when ever i try it just keeps rebooting.
I have tried this while connected to my pc as well but no joy, can this be done using fastboot as the pc does not even seem to see the nexus 7 connected
Any help would be great thanks

[Q] Nexus 7 won't boot up

Hello everyone,
I have had an issue with my nexus 7 2 days ago and couldn't figure out a way to fix it yet, so I need your help
So basically I have been flashing ROMs on my nexus 7 and everything was great no issues at all, til I accedintaly was in Recovery mode and fomatted sd and system (GOD that was stupid), so after doing so all my ROMs saved on my sd card were deleted so I am not able to flash ROMs anymore. The worest part is that even my preloaded PARANOID ANDROID Rom hasn't been able to boot up my device so it's stuck on Google boot logo.
Hence, I assume if there is a way to push ROMs while the tablet is in Recovery mode that would allow me to flash them again and the problem is sloved. However, I don't know if I am able to do that, I have tried nexus 7 toolkit and Android commander but they require USB debugging to be ON (which i am not sure if it was since last time I had this problem), and they both require the tablet to be tured on I belive in order for them to do thier magic ?? correct me if I am wrong...
Unfortuantely I didn't do Nanadroid backup
I am not able to take the tablet to Google obviousely cause i am rooted so you guys are my only hope
Thanks in advance and really appreiate it if i cab get a fast response.
Just flash the factory image from fastboot.
I use the Nexus 7 Toolkit v3.2.0 by mskip. It is amazing. It's in the development thread. You don't need adb to flash the original image. You only need to get into fastboot mode.--->
Turn off n7. Hold both volume up and down and the power button until you get into the bootloader. Then plug your n7 into USB and then launch the toolkit. Make sure your device is recognized at the top in fastboot mode. You are ready to restore the factory image.
Sent from my Paranoid Nexus 7 using XDA Premium

[Q] Changed pixel desnity, wont turn on. Help!

After a successful day of unlokcing and rooting my new tablet, I decided to try and experiment with the dpi to try and get some phone based apps working using an app called "LCD Density Modder" I changed to Mdpi - 160, and the tablet turned off. It restarts to the Goolge logo, with an unlocked lock then dies again. What went wrong and how do I fix it? Help me out guys :crying:
Try holding down the power button for 10-20 seconds.
If that doesn't work, leave it plugged in for a couple hours and try again.
Sent from my Nexus 7
It turns on, and fastboot will show up, but Android will not boot. Or if it is booting, it's only a black screen. Is there any way to erase the pixel settings I've applied through recovery or the Nexus 7 toolkit? Or am I totally missing the point?
Edit: The screen does actually appear to be lit. Just black
theshafe said:
After a successful day of unlokcing and rooting my new tablet, I decided to try and experiment with the dpi to try and get some phone based apps working using an app called "LCD Density Modder" I changed to Mdpi - 160, and the tablet turned off. It restarts to the Goolge logo, with an unlocked lock then dies again. What went wrong and how do I fix it? Help me out guys :crying:
Click to expand...
Click to collapse
do you have a custom rom recovery installed? go into your recovery and wipe data/factory reset. or if you flashed a custom rom, go into the recovery wipe data/factory reset and reflash your rom.
I've tried this, to no avail. After the Google logo, a portion of the screen flashes pink and the tablet goes dark again
You can use wugs toolkit to reinstall a factory image, or you can sideload one using fastboot command, wugs method is easier. The file you edited is the build.prop if you still have adb access you could use adb shell to edit the file and change the settings back. Sadly I don't have a clue as to the default settings for dpi in the n7 build.prop.
Cheers Danny
After attempting to factory reset, and trying all these methods I realized that USB debugging is now disabled :crying:
Have you tried booting into recovery (power and volume down) whilst the tablet is connected to the PC via USB? I found that helps you get into recovery sometimes from bootloops etc.
Cheers Danny
Yes, I can get into recovery and fastboot but any attempt at booting Android results in a black screen
Kk come down.. Boot into Fastboot download wugfresh toolkit, and click the flash back to stock and unroot option and check the box that says device will not boot.. Problem solved
Sent from my Nexus 7 using Tapatalk HD
I tried to, but the drivers wont install because it won't boot
Forgive me, I can do all this but I'm a little slow :silly:
Shafe when you rooted your tablet how did you go about it?
Did you use a toolkit? If so which one?
What type of computer did you use, windows, Mac or Linux?
If it was windows which windows was it, XP, vista, 7, 8?
There are known problems in getting drivers to work with certain windows etc. But if you used a toolkit to root then you must have had working drivers at some point during the process.
Any more info you can provide will help get to the bottom of this
Cheers Danny
I used the not so creatively named Nexus 7 ToolKit v 4.0.0 on windows 7. I've had the drivers and just reinstalled them from the toolkit, so they are now on there again. The problem is that I factory reset and since Android won't boot, I have no way of enabling USB debugging
Grab wugs from here
http://forum.xda-developers.com/showthread.php?t=1766475
[Toolkit] Wug's Nexus Root Toolkit v1.6.1 [Updated 11/30/12]
And follow Francis instructions posted above, should sort your problem. You won't need more drivers as you already have them installed.
Cheers Danny
I tried this a couple times, but after trying to flash stock + unroot it says my ADB device was not found because USB debugging isn't on
Found a guide that will allow you to restore stock through fastboot
http://forums.androidcentral.com/ne...1477-guide-nexus-7-factory-image-restore.html
I am not experienced enough with fastboot to really be of more help. Hope this does the trick.
Cheers Danny
Yep, I found this a few minutes ago and am giving it a shot. I'm inexperienced also, but I guess I'll have to learn! Thanks brother
Forget all toolkits and use fastboot, you'll gain twice that way; working N7 and also you'll have gained some knowledge.
It's a lot easier than it seems.
Sent from my Nexus 7 using xda premium

[Q] Nexus 7 with no OS

messing with the TWRP recovery i accidentally deleted android and all the files and then tried to boot without an OS. Now my tablet is stuck in the google screen with an unlocked padlock in the bottom
Is there a way that i can install android from my pc to my tablet?
I tried the toolkit
But it needs to enable "usb debuging" but I can not switch on my tablet to enable it, since i have no OS. I tried pressing the side buttons to go to recovery or bootloader mode, neither worked
Is there another way to install the drivers and then the Android stock OS to the tablet, the tablet used to be rooted in stock android 4.2.1. It is a Nexus wifi 2012
I can use a solution that works in either Ubuntu, Fedora or Windows
Thank you
Put nexus in download mode and install firmware with odin. Drivers will install when you connect nexus to pc in download.
Sent from my SM-N9005 using xda app-developers app
shayind4 said:
Put nexus in download mode and install firmware with odin. Drivers will install when you connect nexus to pc in download.
Sent from my SM-N9005 using xda app-developers app
Click to expand...
Click to collapse
can you detail the procedure for me plz? how do i put the nexus in download mode when it is stuck in the google screen ?
Nakas21 said:
messing with the TWRP recovery i accidentally deleted android and all the files and then tried to boot without an OS. Now my tablet is stuck in the google screen with an unlocked padlock in the bottom
Is there a way that i can install android from my pc to my tablet?
I tried the toolkit
But it needs to enable "usb debuging" but I can not switch on my tablet to enable it, since i have no OS. I tried pressing the side buttons to go to recovery or bootloader mode, neither worked
Is there another way to install the drivers and then the Android stock OS to the tablet, the tablet used to be rooted in stock android 4.2.1. It is a Nexus wifi 2012
I can use a solution that works in either Ubuntu, Fedora or Windows
Thank you
Click to expand...
Click to collapse
I had more or less the same issues. I had also performed a factory reset. Finally got it back last night using mskip toolkit,after numerous tries using both tool kits. I downloaded factory image to the toolkit through the options in the menu,then flashed it,answering yes to the format question at first. It kept getting stuck near the end sending. Tried about 5 times and changed USB cord to different ports,lei ally it went through,went from google logo to x to google logo back to x(I stayed patient at this point and did not assume boot loop) it finally booted into stock tablet.
I had already tried this and other methods before numerous times,and was moving on going to teach myself how to do it through command prompt, sdk,etc...
Tried the mskip toolkit one last time and it worked.

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