Database Users

Nexus 7 won't show up in adb devices, what should I do?

Earlier today I flashed Kaos Droid to try it out, but it put my Nexus in a state where it would not go past the screen that says Google and has the lock at the bottom. Since I have TWRP, Reboot to recovery from boot loader didn't work. I tried fixing the problem in not Windows and Ubuntu, but Windows kept on ending up as unknown device and no matter what drivers I tried to make it use it would not take, and in Linux it didn't show up in adb devices. I got lucky and it rebooted into TWRP after my fifth try of selecting recovery from the boot loader. I restored from backup, but I don't want this to happen again, if that ever happens. What should I do to get it in adb devices? Thanks.
Sent from an 8-core device from 2015

usb debugging

Try
Code:
adb kill-server
adb start-server
Can't remember if you need superuser permissions or not.

thebobp said:
Try
Code:
adb kill-server
adb start-server
Can't remember if you need superuser permissions or not.
Click to expand...
Click to collapse
I tried that, didn't work.

sonikot said:
usb debugging
Click to expand...
Click to collapse
How could I turn that on from bootloader? It was and is on before flashing the ROM and after restore.

Should have been able to run fastboot commands, either to try to reboot into the existing recovery, reboot into a recovery image, or flash a new recovery.
Sent from my Nexus 7 using xda premium

jcracken said:
Earlier today I flashed Kaos Droid to try it out, but it put my Nexus in a state where it would not go past the screen that says Google and has the lock at the bottom. Since I have TWRP, Reboot to recovery from boot loader didn't work. I tried fixing the problem in not Windows and Ubuntu, but Windows kept on ending up as unknown device and no matter what drivers I tried to make it use it would not take, and in Linux it didn't show up in adb devices. I got lucky and it rebooted into TWRP after my fifth try of selecting recovery from the boot loader. I restored from backup, but I don't want this to happen again, if that ever happens. What should I do to get it in adb devices? Thanks.
Sent from an 8-core device from 2015
Click to expand...
Click to collapse
Have a look at the Device Manager in Windows with your tablet plugged in. If there's that yellow triangle, just right click and choose update driver. Then you just browse and point Windows to where you have your N7 drivers.

akbar26 said:
Have a look at the Device Manager in Windows with your tablet plugged in. If there's that yellow triangle, just right click and choose update driver. Then you just browse and point Windows to where you have your N7 drivers.
Click to expand...
Click to collapse
That's the thing, I pointed it to official N7 drivers, Google USB Drivers, SuperOneClick drivers, and a bunch of other ones. It would never take--saying either that the best drivers are already installed (even though none were installed) or no suitable drivers exist in that directory.

I'm having a similar issue here, except I can get to the "X" boot animation.

jcracken said:
That's the thing, I pointed it to official N7 drivers, Google USB Drivers, SuperOneClick drivers, and a bunch of other ones. It would never take--saying either that the best drivers are already installed (even though none were installed) or no suitable drivers exist in that directory.
Click to expand...
Click to collapse
same problem here ... did u ever solve it ?

sonikot said:
usb debugging
Click to expand...
Click to collapse
Sometimes it seems to me that, even though USB debugging is "on", it really isn't.
Several times I have had to un-check and re-check "USB debugging" before adb would recognize the device.
Just my experience. Your milage may vary.

i'm in the same boat !
,
Any ?

Are you on 4.2.2? There now should be a security dialog upon executing an ADB command on the device, it will prompt you to allow the command to be executed.
If tou aren't on 4.2.2 - then it seems to be either a driver or a ROM issue

Yes I'm on 4.2.

I had this problem too and reinstalling the SDK tools fixed it for me for some reason.
Sent from my Paranoid 3.0 Nexus7 running M-Kernel mr1

I reinstall sdk without sucess

Maybe try using wugfresh toolkit. I've seen people say they couldn't use adb or fastboot but the toolkit worked. Doesn't really make sense to me since the toolkit just sends the commands for you but hey, worth a shot. It will walk you through uninstalling current drivers and doing a fresh driver install also.
Sent from my Paranoid 3.0 Nexus7 running M-Kernel mr1

travisjustin said:
Maybe try using wugfresh toolkit. I've seen people say they couldn't use adb or fastboot but the toolkit worked. Doesn't really make sense to me since the toolkit just sends the commands for you but hey, worth a shot. It will walk you through uninstalling current drivers and doing a fresh driver install also.
Sent from my Paranoid 3.0 Nexus7 running M-Kernel mr1
Click to expand...
Click to collapse
I use this kit. Remove all drivers. Then install the driver again. The drivers has been install in fastboot mode and recovery mode. The nexcus is recognized in these mode by the wugfresh toolkit.
Unfortunately in normal mode, when i active usb debug mode, i get a unkown device on windows 7 32 with any possibility to update the drivers.
I get error unkow device, device is stop error 43
Cable is stock and also try another one.
I get same message error on another computer with windows 8

I confirm that my usb issue is solved.
After a factory reset, i reinstall the last release Usb ROM and USB comes back to life on my nexus.
The nexus is no more recognized as unkown device by my computer and i can install the adb driver.
During this story, i try also to get acces via wifi but was unable to connect even with adb over wifi enable on the nexus.
That why Timur recommands me to made a full factory reset.
My problem seems to be due to corrupt data that block every connections between the computer and the nexus (adb wifi and usb) based on last 4.2.2 new safety features.
So far i recommand full wipe between two rom install to avoid such trouble.
Thank a lot to timur for his support during the week end.

If your nexus is rooted, go in recovery mode and install a new rom from zip.
How to ?
Download rom of your choice via wifi
You can download a rom directly from your nexus to sd.
Check here for download (example)
http://mehrvarz.github.com/nexus-7-usbrom/
Download Google applications on your nexus via wifi
Download from here : http://donandroid.com/gapps
Before installing new rom make a save using titanium backup.
https://play.google.com/store/apps/details?id=com.keramidas.TitaniumBackup&hl=fr
Save all your application and data in batch mode.
Create titanium.zip on your nexus 7 sd.
Then from recovery mode make a full wipe but without erasing sd data.
Follow these instructions :
Unless you format the system partition and system caches, you aint wiped nothing, there is only one way to carry out a proper full wipe, and thats the full wipe the correct way.
1. Boot into recovery
2. Wipe the cache partition
3. Go to advanced and wipe dalvik and batt stats.
4. Go back to mounts and storage and format system, then data, then cache.
5. Go back and install the rom zip file from the sd card.
6. Reboot.
No need to wipe data/factory reset, the contents of your internal and external sd cards are untouched.
From Recovery mode
- install titanium.zip.
- install gapps.zip
Reboot
Go to titanium backup and recover all your data.
Et voila...

[Q] No ROM installed, can't mount in TWRP. Help please

I just unlocked/rooted my Nexus 7. I downloaded CleanROM3.0, but before I wanted to flash it, I wiped everything. Now there is No Rom installed and my Clean ROM file is gone. I want to put it back on my device through TWRP but the mount to my PC is not working. I can see it in device manager, but it's unknown and no file explorer opens up for it. How can I get the file back on it??? Help please. Is there a driver I'm missing for it to mount properly in TWRP?

danman132x said:
I just unlocked/rooted my Nexus 7. I downloaded CleanROM3.0, but before I wanted to flash it, I wiped everything. Now there is No Rom installed and my Clean ROM file is gone. I want to put it back on my device through TWRP but the mount to my PC is not working. I can see it in device manager, but it's unknown and no file explorer opens up for it. How can I get the file back on it??? Help please. Is there a driver I'm missing for it to mount properly in TWRP?
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1781250
follow that guide, will get you back to stock then start again, and dont erase sd card next time! just factory reset to go from stock to CleanROM

danman132x said:
I just unlocked/rooted my Nexus 7. I downloaded CleanROM3.0, but before I wanted to flash it, I wiped everything. Now there is No Rom installed and my Clean ROM file is gone. I want to put it back on my device through TWRP but the mount to my PC is not working. I can see it in device manager, but it's unknown and no file explorer opens up for it. How can I get the file back on it??? Help please. Is there a driver I'm missing for it to mount properly in TWRP?
Click to expand...
Click to collapse
Put the ROM zip file in your Android SDK/platform-tools directory on your computer. Open a command prompt window, change directories to your Android SDK/platform-tools location (for me that's: cd sdk/platform-tools) and type in:
Code:
adb push <name of ROM zip> /sdcard
Wait about 30-60 seconds until it's done, then flash your ROM. It'll be on the root of your internal storage (/sdcard).

I think, you have to flash a factory image by using adb.
Sent from my Nexus 7 using xda premium

I'm in my bootloader and hooked up the USB cable. Trying to use adb, but the device is not showing up when trying to pull up the list of ADB devices. Starting to get worried now. Can't mount in TWRP, and now it can't find the device in my ADB. It found the device just fine when I had it booted up before while I was doing the unlock/root process.

Nico_60 said:
I think, you have to flash a factory image by using adb.
Sent from my Nexus 7 using xda premium
Click to expand...
Click to collapse
danman132x said:
I'm in my bootloader and hooked up the USB cable. Trying to use adb, but the device is not showing up when trying to pull up the list of ADB devices. Starting to get worried now. Can't mount in TWRP, and now it can't find the device in my ADB. It found the device just fine when I had it booted up before while I was doing the unlock/root process.
Click to expand...
Click to collapse
You need to use fastboot commands to flash .img files via the bootloader. Try typing in:
Code:
fastboot devices
Please review this thread: http://forum.xda-developers.com/showthread.php?t=1907796

RMarkwald said:
You need to use fastboot commands to flash .img files via the bootloader. Try typing in:
Code:
fastboot devices
Please review this thread: http://forum.xda-developers.com/showthread.php?t=1907796
Click to expand...
Click to collapse
I am having the same problem, but with a Kindle Fire 2. When I wiped, it took out my new Rom, and I cannot mount in TWRP...
And, it won't boot the stock ROM. To make matters worse, I cannot see the device in ADB!
Joe

yudanjah said:
I am having the same problem, but with a Kindle Fire 2. When I wiped, it took out my new Rom, and I cannot mount in TWRP...
And, it won't boot the stock ROM. To make matters worse, I cannot see the device in ADB!
Joe
Click to expand...
Click to collapse
You should ask in the kindle fire 2 forums as some advice may be hardware specific.

Soft brick (Already searched up and down)

So I messed up my Nexus somehow. I was trying to install MIUI coming from Carbon ROM but something went wrong as it got stuck on the miui logo. So I rebooted to TWRP and restored my backup. So then I tried to install PA and then it just got stuck on the google logo. So i restored my backup again and tried again to no avail. Then after that I couldn't restore my backup ( I keep getting FAILED as soon as the data restore starts). I can boot to Recovery but I dunno what to do. I tried sideloading but that's not working. I tried the toolkit but everytime it tries to download the factory image it says 404. The phone charges and whatnot but I don't know what to do. I only have the PA rom on my phone and reinstalling it doesn't do anything. The only weird thing is that when I try to install the PA gapps I get a FAILED message. Any help would be appreciated

varem said:
So I messed up my Nexus somehow. I was trying to install MIUI coming from Carbon ROM but something went wrong as it got stuck on the miui logo. So I rebooted to TWRP and restored my backup. So then I tried to install PA and then it just got stuck on the google logo. So i restored my backup again and tried again to no avail. Then after that I couldn't restore my backup ( I keep getting FAILED as soon as the data restore starts). I can boot to Recovery but I dunno what to do. I tried sideloading but that's not working. I tried the toolkit but everytime it tries to download the factory image it says 404. The phone charges and whatnot but I don't know what to do. I only have the PA rom on my phone and reinstalling it doesn't do anything. The only weird thing is that when I try to install the PA gapps I get a FAILED message. Any help would be appreciated
Click to expand...
Click to collapse
Have you tried to install another rom on your nexus?
you can put it on with adb push command from recovery though a pc, and then wipe everything and try to install it.
Or you can download stock 4.2.2 rom here: http://forum.xda-developers.com/showthread.php?t=2147281
Here you can find your factory image directly from google: https://developers.google.com/android/nexus/images#occamjdq39

How do I adb push?

varem said:
How do I adb push?
Click to expand...
Click to collapse
you must enter into recovery, connect your phone to your pc with usb cable and then you should be able to see your device,
try
Code:
adb devices
on CMD and it can see your phone type
Code:
adb push **your-rom-from-computer** /sdcard/
then just install it from the recovery

When you say recovery do you mean the main menu? I'm using TWRP and when I'm on the main menu my PC doesnt read the device

http://forum.xda-developers.com/showthread.php?p=34674471
My bad I should have read.....you tried a tool kit already
Sent from my Nexus 4 using xda app-developers app

mmh i don't have twrp so i don't know, do you have the option to mount sdcard to usb?

varem said:
When you say recovery do you mean the main menu? I'm using TWRP and when I'm on the main menu my PC doesnt read the device
Click to expand...
Click to collapse
Ok, wait. I need some clarification. I'm going to try to be as simple as possible, to make sure we are on the same page. When you say your PC doesn't read the device, do you mean through adb or on Windows Explorer?
If you mean through Windows Explorer, then that is not where you need to be. You must get adb working as a bridge to your device. Use this sticky guide to get it set up. I would recommend reading that guide top to bottom anyway, it's extremely informative and new-user friendly. Anyway, the info you need is in the 'Setting up ADB for our device:' section.
If you have adb installed, you need to check to see if it recognizes your device. Do this by opening up cmd and navigating to the folder that adb.exe is located. After that, use 'adb devices' to see if adb recognizes your device. If so, move to the next paragraph. If not, your drivers aren't set up properly for recovery mode. Go into Device Manager on your computer and find your device (under something like 'Other devices', or 'Android device'). If you find it, then get these drivers and install them for the device. Do this by right-clicking, and selecting 'Update Driver Software...', 'Browse my computer for driver software', and browse to that folder. I may have missed a few steps on installing the drivers, it's been a while. If so, just search on how to do it, or post back here. I'm sure I can walk through it and get a more precise guide.
Assuming you have adb installed and it recognizes your device, you need to open up cmd and navigate to the folder that adb.exe is located. Then, use the adb push command as outlined above.

Download stock images from Google's website and flash it via fastboot. If you don't know how to do it then use a toolkit like WuguFresh to do it for you.
Sent from my Nexus 4

You can also use the toolkit for pushing a ROM in your SDcard, or backup your SD in your pc.
Envoyé depuis mon Nexus 4 en utilisant Tapatalk 4 Beta

The PC reads the device as it detects it but when I type in adb devices it doesnt show up. It only ever shows up when I enter the sideload menu in TWRP

atulalvenkar said:
Download stock images from Google's website and flash it via fastboot. If you don't know how to do it then use a toolkit like WuguFresh to do it for you.
Sent from my Nexus 4
Click to expand...
Click to collapse
Thanks man. This toolkit saved my nexus!
Sent from my Nexus 4 using xda premium

Stuck in recovery mode

Today, I wanted to reinstall the ROM on my Google nexus 4, and my phone was previously rooted months ago (with Google_Nexus_4_ToolKit_v2.0.0) and was installed with AOKP custom ROM. So I booted into the recovery mode, and accidentally I formatted the system, the cache, the data, etc. I thought when I connect the phone (in recovery mode) to my PC, the PC should recognize my phone and display it as a USB drive in my computer.
However, I was so wrong. With the right driver, the phone is recognized by my PC (as shown in device manager), but it won't show up as a USB drive. So I cannot put in any ROM/gapps file into the phone, I tried to use adb push to load the ROM/gapps into the phone, but I keep getting the "Read-only file system" error. I found the /storage/sdcard0/ can receive the pushed files, but in recovery mode, I cannot select these files for install.
I am now stuck in the recovery mode and cannot do anything. I need you guys help. How can I install a ROM now? thanks a million!!!!

Adb can only be used when your device is booted on android. If not then go to the boot loader and use fastboot.
Sent from my Nexus 4 using Tapatalk 2

rcholic said:
Today, I wanted to reinstall the ROM on my Google nexus 4, and my phone was previously rooted months ago (with Google_Nexus_4_ToolKit_v2.0.0) and was installed with AOKP custom ROM. So I booted into the recovery mode, and accidentally I formatted the system, the cache, the data, etc. I thought when I connect the phone (in recovery mode) to my PC, the PC should recognize my phone and display it as a USB drive in my computer.
However, I was so wrong. With the right driver, the phone is recognized by my PC (as shown in device manager), but it won't show up as a USB drive. So I cannot put in any ROM/gapps file into the phone, I tried to use adb push to load the ROM/gapps into the phone, but I keep getting the "Read-only file system" error. I found the /storage/sdcard0/ can receive the pushed files, but in recovery mode, I cannot select these files for install.
I am now stuck in the recovery mode and cannot do anything. I need you guys help. How can I install a ROM now? thanks a million!!!!
Click to expand...
Click to collapse
Of course you are able to use ADB in recovery mode. Have you tried
Code:
adb push nameoftherom.zip /sdcard/
or if you are using a recovery where you are able to use adb sideload
Code:
adb sideload nameoftherom.zip
Then it should work. Or try mounting the usb in mounts/storage -> mount usb storage
scream4cheese said:
Adb can only be used when your device is booted on android. If not then go to the boot loader and use fastboot.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
Of course, it should work if the drivers are installed properly

Like others said use adb push to put a file on the device and then you can flash it with recovery.
If you don't have adb you can get it either by downloading android SDK or just downloading adb did
Sent from my Nexus 4 using xda app-developers app

Try flashing back to stock, then just root and put your ROM back on, I've had to do it once before
Sent from my Nexus 4

[Q] Enable USB debugging for ADB with a wiped device. Is it possible?

Hi there.
I have a Nexus 4 with a failed root through Nexus 4 Root toolkit.
The toolkit unlocked the bootloader with no problems but it failed at applying SuperSU-v1.45.zip through ADB through CWM
I am pretty certain that this process failed because I did not Enable USB debugging before starting.
So, I think the question I want to ask is: Is it possible to Enable USB debugging so I can apply perform adb sideload SuperSU-v1.45.zip
Do I have any other options? At present the device won't boot into Android OS. The states I currently have are either
1. fast boot mode
and then Recovery Mode -> CWM
2. Just a black screen, the Google logo, and an unlocked padlock
Any pointers would be greatly appreciated
Thanks!
jon.

Why CWM? TWRP is a lot better.
And Android USB debugging has no job in recovery so it isn't necessary if you're sideloading

Oh, and a few extra bits of info:
* I am on a mac
* I am pretty sure it's the adb ruining the party because when I do this:
(null) latform-tools jonwhittlestone$ adb devices
List of devices attached
(null) latform-tools jonwhittlestone$

Ahh thanks Lawstorant. Maybe my question isn't warranted then, or I'm barking up the wrong tree with ADB/USB debugging. Needless to say, I didn't enable it and surely this is not going to stop me rooting?
How can I get replace CWM with TWRP bearing in mind I can't get into the OS anymore - I'm a total Android root newbie as of this morning?

jonwhittlestone said:
Ahh thanks Lawstorant. Maybe my question isn't warranted then, or I'm barking up the wrong tree with ADB/USB debugging. Needless to say, I didn't enable it and surely this is not going to stop me rooting?
How can I get replace CWM with TWRP bearing in mind I can't get into the OS anymore - I'm a total Android root newbie as of this morning?
Click to expand...
Click to collapse
You shouldnt have used a toolkit.
Anyways, i think that you are misunderstanding this. You DO NOT need usb debugging enabled for adb to work while in a custom recovery. Adb works by default in a custom recovery.
I would suggest pushing a rom onto your phone (download a rom on your mac, put the phone into cwm, and run "adb push rom.zip /sdcard/").
After that go back to the phone and choose: wipe data/factory reset, wipe cache partiiton, advanced> wipe dalvik cache. Then go to install zip from sdcard and install the rom that you just pushed.

*Download the newest TWRP .img file from TWRP website
*Rename it to recovery.img to get rid of that long name
*Go into bootloader but don't choose anything (fastboot mode)
*In ADB type: fastboot flash recovery file_location/recovery.img
Sideloading in TWRP is in Advanced menu

consonant edbreach
Chromium_ said:
You shouldnt have used a toolkit.
Click to expand...
Click to collapse
Thanks Chroumium_, the procedure is becoming clearer. I should have known better to use a toolkit for sure.
I had actually followed Lawstorant's advice and put on twsrp, nevertheless - when I try to push a zip with adb, I get the following
(null)latform-tools jonwhittlestone$ adb push cm-10.2-20130815-rootandboot-mako.zip /sdcard/
error: device not found
Is this because I don't have the correct Nexus 4 drivers? The way I've always handled File transfers is with Android File Transfer so presumably I have go the correct drivers.
I am guessing if I had removable media, I could have put the zip on that...

jonwhittlestone said:
Thanks Chroumium_, the procedure is becoming clearer. I should have known better to use a toolkit for sure.
I had actually followed Lawstorant's advice and put on twsrp, nevertheless - when I try to push a zip with adb, I get the following
(null)latform-tools jonwhittlestone$ adb push cm-10.2-20130815-rootandboot-mako.zip /sdcard/
error: device not found
Is this because I don't have the correct Nexus 4 drivers? The way I've always handled File transfers is with Android File Transfer so presumably I have go the correct drivers.
I am guessing if I had removable media, I could have put the zip on that...
Click to expand...
Click to collapse
Im pretty sure that mac doesnt require any drivers to be installed. Try running these commands first:
Code:
adb kill server
adb start server
Also make sure that your adb is up to date (using the sdk manager). If its still not working try other usb ports or cables if you have any.
At this point adb is the only way to move the zip onto the phone, since the nexus 4 doesnt not support usb mass storage.

Chromium_ said:
Im pretty sure that mac doesnt require any drivers to be installed. Try running these commands first:
Code:
adb kill server
adb start server
Also make sure that your adb is up to date (using the sdk manager). If its still not working try other usb ports or cables if you have any.
At this point adb is the only way to move the zip onto the phone, since the nexus 4 doesnt not support usb mass storage.
Click to expand...
Click to collapse
Thanks to both - I've now solved and rooted
I reflashed with the stock google image
Followed androidpolice.com/2013/07/24/how-to-flash-your-nexus-4-to-android-4-3-jwr66v-and-root-it-right-now/
And - got the official TRSW from Gooapps on the Market
Flashed the SU update using the shell script - all details in the link above.

current supersu is 1.65

Can i enable usb debugging via locked phone [pin screen lock]
ok so i have a phone its an lg k5 or in mexico lg q6 a friend has asked me to unlock it with out doing any kind of hard reset or format so he he can access the pictures and other things on the phone since it belongs to his brother who passed away. anyways does anybody know of any way i can enable usb debugging so i can reset the lock screen via ADB ?? or maybe some other way?