I have searched high and low for a forum where the same problems are presented. I have had no luck at all. So, I hope that I'm not driving anyone nuts here, but here goes
I have a 2012 Nexus 7. I am using this tablet to learn all about how to work with android software, ROMS, kernals, etc. It is unlocked and rooted. I have TWRP. It is currently stuck in a bootloop (I tried to install a custom ROM) and I have no idea if USB debug is on or not. When I connect the tablet to my PC, it will charge and the computer acknowledges that SOMETHING is connected but will not find the tablet itself. (ie: I cannot find the tablet icon to click on). I have been to dev manager and I cannot find it there either.
I have no idea what anyone is talking about with this abd sideload. Most of what is said is greek to me. If someone would be willing to explain that to me (in english) I would love to learn.
Obviously, I am in above my head and I really could use some genuine help here.
I just want to flash this thing back to stock. Could someone please explain to me how to accomplish this?
deejinfla said:
I have searched high and low for a forum where the same problems are presented. I have had no luck at all. So, I hope that I'm not driving anyone nuts here, but here goes
I have a 2012 Nexus 7. I am using this tablet to learn all about how to work with android software, ROMS, kernals, etc. It is unlocked and rooted. I have TWRP. It is currently stuck in a bootloop (I tried to install a custom ROM) and I have no idea if USB debug is on or not. When I connect the tablet to my PC, it will charge and the computer acknowledges that SOMETHING is connected but will not find the tablet itself. (ie: I cannot find the tablet icon to click on). I have been to dev manager and I cannot find it there either.
I have no idea what anyone is talking about with this abd sideload. Most of what is said is greek to me. If someone would be willing to explain that to me (in english) I would love to learn.
Obviously, I am in above my head and I really could use some genuine help here.
I just want to flash this thing back to stock. Could someone please explain to me how to accomplish this?
Click to expand...
Click to collapse
You need to read first. Then flash. If you kill your device then you won't learn too much. Start with this thread --> http://forum.xda-developers.com/showthread.php?t=1907796.
You will probably need to install the naked Android fastboot drivers (search!) to proceed through the thread, since you can't put the device into USB debugging.
Anyway, to answer your questions:
adb (Android Debug Bridge) is a tool that allows a computer to control low-level features of an Android device. adb sideload allows you to send an app or ROM from your computer to your device (usually in a custom recovery) and install it, which helps if you've accidentally killed everything on your internal memory. However, you need a custom recovery (CWM/TWRP) to use adb sideloads.
You're better off learning how to use fastboot, which is a bootloader-based tool that helps a lot with disaster recovery.
Okay, I guess I need more help. I don't understand how I am supposed to be able to use fastboot to bypass the "enable USB Debugging". If I could get this to happen, I believe I can get my device back to stock. Can you explain this to me? NONE of the descriptions online are of any use at all.
Just reboot your device using power boutton and volume+ and volume- buttons to access to bootloader mode I suggest you to use nexus root toolkit it's very simple and usefull
Sent from my Nexus 7 using XDA Premium 4 mobile app
Nexus CANNOT ENABLE USB DEBUGGING
Can I ask for your help guys? My Nexus 7 v1 is stuck on boot loop (either stuck on google screen or sometimes would proceed up to the nexus animation screen) and I've been trying to fix it with the Nexus Root Toolkit (NRT). I just have problem proceeding with the steps since the toolkit advices me to enable my device's USB DEBUGGING (open device , go to settings, then developer options etc) which I CANNOT POSSIBLY DO COS AGAIN, NEXUS IS JUST STUCKED ON BOOT LOOP.
Can you suggest OTHER ways I can enable USB Debugging in Nexus 7? I would greatly appreciate your help.
You don't need to get into USB debugging mode, as your goal is to reflash a stable ROM onto your device. You can do that with Fastboot commands when your N7 is in the (unlocked) bootloader. You can follow the instructions in the second thread in this forum, or tell NRT you're soft bricked, to install a factory ROM.
Related
Hey,
i've got a huge problem with my Nexus 7 32 GB 3G. I've had root and i made an update many times without any problem, but once i was making some update of 4.2.2 the device didn't want to turn on and it freezed on Google logo. I tried to do plenty of ways to repair it; unroot, factory reset, wipe... Then i tried to do a flash via Nexus 7 Toolkit, but... there is the problem! How can i do the flash without enabled USB debugging? Is there any way to evade it? Or can I enable USB debugging from my PC for example? HOW??? PLEASE!
Is there anyone who can help me with solving this problem?
Any ideas, recommendations..?
Thank you for all of your responds.:good:
flash a factory image using fastboot...
USB debugging doesn't have anything to do with fast boot mode. Fast boot is the proper way to flash the images.
USB debugging only matters within the booted OS.
You should spend some time learning the right way to do things instead of relying on toolkits.
Sent from my Galaxy Nexus
BerryRide said:
Hey,
i've got a huge problem with my Nexus 7 32 GB 3G. I've had root and i made an update many times without any problem, but once i was making some update of 4.2.2 the device didn't want to turn on and it freezed on Google logo. I tried to do plenty of ways to repair it; unroot, factory reset, wipe... Then i tried to do a flash via Nexus 7 Toolkit, but... there is the problem! How can i do the flash without enabled USB debugging? Is there any way to evade it? Or can I enable USB debugging from my PC for example? HOW??? PLEASE!
Is there anyone who can help me with solving this problem?
Any ideas, recommendations..?
Thank you for all of your responds.:good:
Click to expand...
Click to collapse
Hi, BerryRide...
You don't need USB Debugging enabled (as far I'm aware, it's not possible anyway, in FASTBOOT/BOOTLOADER mode)...
Download the factory stock image for your device, from here...
https://developers.google.com/android/nexus/images.
Shutdown your tablet... and reboot into FASTBOOT/BOOTLOADER mode (Vol Down BUTTON + PowerOn BUTTON)...
Hook your tablet up to your computer, via a USB cable (preferably the USB cable that originally shipped with your tablet)...
And run...
Code:
fastboot devices
This should return a SERIAL NUMBER, indicating you have a FASTBOOT connection, and you can then run whatever FASTBOOT commands you like... including what is in the FLASH-ALL script in the FACTORY STOCK image for your specific device.
Rgrds,
Ged.
Bumping this thread because it just really helped me!!! Thanks @GedBlake!!!!
For the longest time I could never get fastboot or flash-all to work without first enabling USB debugging and much swearing and dealing with permissions. Wound up that my device wasn't getting recognized by Windows at the bootloader. It finally worked after a manual update Device Manager -> Update Drivers using the SDK Manager directory (I subsequently read about in this thread: http://forum.xda-developers.com/showthread.php?t=1583801).
Updating my three Nexii 7 to MRA58V was a breeze this time. Wow- thanks again for the direction.
I have a Google Nexus 4, bought direct from Google, I rooted it and it was working well for a while. Then the battery started draining super fast. A friend recommended resetting, so I did and it seemed to fix it for a while. Then the battery issue came up again, so I reset again, expecting the same outcome....however, I wiped the phone completely. It turns on and displays Google, and that's it.. My computer does not recognize the phone when I plug it in, and I cannot get the USB Debugging to even be an option. Every resolution I have found for this situation needs me to enable the USB Debugging mode. Is there any other way to get all the OS files back on this phone or is it bricked?
When I plug it into the PC it tells me to look up drivers, and this is how it sees my phone: Unidentified Device USB\VID_0CF3&PID_3000&REV_0200.
It isn't recognized as a phone at all. It tells me to download Atheros Drivers.
I have searched for days trying to find the solution to this. Any help would be so very appreciated by this noob
Did you try to manually delete drivers from the device manager? Ticking the option that permanently delete the driver from PC.
And after doing this...trying Windows Update for driver installation?
PS: also try to manually flash with Fastboot all the latest Factory Image from Google....
Sent from my Nexus 4 using Tapatalk 4 Beta
thesebastian said:
Did you try to manually delete drivers from the device manager? Ticking the option that permanently delete the driver from PC.
And after doing this...trying Windows Update for driver installation?
PS: also try to manually flash with Fastboot all the latest Factory Image from Google....
Sent from my Nexus 4 using Tapatalk 4 Beta
Click to expand...
Click to collapse
Yes, I've done that, there are currently no drivers on my PC. When the phone is plugged into the PC, it tells me to find drivers because it is an unrecognized device.
MrsWhitey said:
I have a Google Nexus 4, bought direct from Google, I rooted it and it was working well for a while. Then the battery started draining super fast. A friend recommended resetting, so I did and it seemed to fix it for a while. Then the battery issue came up again, so I reset again, expecting the same outcome....however, I wiped the phone completely. It turns on and displays Google, and that's it.. My computer does not recognize the phone when I plug it in, and I cannot get the USB Debugging to even be an option. Every resolution I have found for this situation needs me to enable the USB Debugging mode. Is there any other way to get all the OS files back on this phone or is it bricked?
I have searched for days trying to find the solution to this. Any help would be so very appreciated by this noob
Click to expand...
Click to collapse
Hold volume up/down and power until it reboots into boot loader mode. Download the factory images from the Google website (search nexus stock images on Google) and plug your phone into the computer and use fastboot to flash the OS back.
Rember, as long as you can get the phone to turn on you can fix whatever other issue your having providing its software related.
To fastboot flash,
You need the android SDK, use Google to figure out how to install it but its not hard.
Run the flash-all bat found in the archive file you downloaded, or manullay flash each partition like this.
fastboot flash [partition] [.IMG name]
Sent from my Nexus 4 @1.944 GHz on Stock 4.2.2
IRX120 said:
Hold volume up/down and power until it reboots into boot loader mode. Download the factory images from the Google website (search nexus stock images on Google) and plug your phone into the computer and use fastboot to flash the OS back.
Rember, as long as you can get the phone to turn on you can fix whatever other issue your having providing its software related.
To fastboot flash,
You need the android SDK, use Google to figure out how to install it but its not hard.
Run the flash-all bat found in the archive file you downloaded, or manullay flash each partition like this.
fastboot flash [partition] [.IMG name]
Sent from my Nexus 4 @1.944 GHz on Stock 4.2.2
Click to expand...
Click to collapse
I am having trouble getting the phone to accept anything from the PC...
MrsWhitey said:
I am having trouble getting the phone to accept anything from the PC...
Click to expand...
Click to collapse
Download the toolkit and install the drivers
Sent from my Nexus 4 @1.944 GHz on Stock 4.2.2
yea download Google Nexus 4 ToolKit install drivers then you can factory restore using the toolkit to restore
i think i chose option 9 and it downloaded the need restore image
Tried it all
I have tried all those ideas and all have failed. I can never get the computer to see my device. All it says is unknown device. When I click update drivers and direct it to the sdk driver I download it still gives me no connection through fastboot or adb. I have tried selecting various general Android drivers through the update drivers screen, Found some from Google Inc. that specify Nexus 4 bootloader interface and adb interface. Nothing is working. I think I need to have a working Nexus 4 to install to correct drivers first and then I might be able to piggy back off those and use my phone to flash through fastboot or push adb. I have worked with both command lines with reasonable success before rooting samsung tablets and phones and htc's. I am familiar with the process and have read numerous ideas none of which seem to work in this case. Made it all the way to Google search page 12. Anyone know a way to force install the Nexus 4 drivers without having a working phone present? I am thinking I just need to go buy a new one and return it after I plug it in to install drivers. Don't want to have to pay the re-stock fee though. Any other ideas are very welcome.
And I have tried to use the toolkit as well and it does nothing either. I have the stock rom ready to go just need a way to get it onto the phone.
howdy y'all,
so im trying to help out my buddy. he currently has no os installed as well, but can boot to bootloader and twrp recovery 2.5. no idea how he has that but I figure I could just mount some zip files and be on my way. Currently whenever we try to do anything in twrp(ie wipe/mount) it is just hung up on unable to mount /radio even when all I have checked is system. I can't use adb or fastboot as far as I'm aware of; I've tried to use the unified android toolkit from skipsoft but its no dice since I was never able to turn on debug mode to begin with? So yeah any help would be much appreciated
oh and I know its not my cable or usb ports since the tablet can still charge.
Also this is the 2012 N7
Hi,
You'll need to get adb and fastboot working, best approach is to wipe and flash factory images through fastboot but may also need to use adb for e2fsck
http://forum.xda-developers.com/showthread.php?t=2277112
See this on getting fastboot working, best of luck!
demkantor said:
Hi,
You'll need to get adb and fastboot working, best approach is to wipe and flash factory images through fastboot but may also need to use adb for e2fsck
http://forum.xda-developers.com/showthread.php?t=2277112
See this on getting fastboot working, best of luck!
Click to expand...
Click to collapse
I don't understand how I'm supposed to get fastboot working since I was never able to enable debug mode on the device in the past let alone now that it has nothing installed. And from what I can understand from the instructions I need the drivers to be installed after I plug in while under debug mode for the sdk to work.
I attempted to install the nexus 7 driver from here: http://support.asus.com/download.aspx?SLanguage=en&m=Nexus+7&os=32
However it looks like I already have the files on my computer from a previous attempt with Skipsoft's Android toolkit?
Because of this I'm unsure of how to move forward with this fastboot business.
fastboot doesn't need debugging on or an os installed, just a functional bootloader
You will probably need to manually update the drivers yo the proper ones
I see, how do I go about manually installing this driver then? I'm assuming I need to go through some sort of windows device tree? Or can I just extract a file somewhere?
You can download usbdview (just search Google for a free download) to see what driver is selected when you plug in your tab easily
Or you will need to go into device manager and select to manually update the drivers, don't allow windows to select but manually choose it
There are loads of instructional videos on YouTube for you if needed
I know this is a super late response, but I never managed to get around to trying to find out how to do a manual install. Just tried today using the Nexus Root Toolkit v.1.9.9. I still can't figure out how to manual install the driver because my issue is that windows doesn't recognize anything is plugged in, and all of these guides do state that I should have had usbdebugging checked. I can't seem to find a specific guide that correlates to setting fastboot up exclusively like you mentioned.
Also, using usbdeview like you said I could see that I have installed a google nexus adb interface, a google galaxy nexus adb interface, as well as the mtp usb driver.
Sorry for all the handholding, but this really is an issue that I've never have encountered and I can't seem to manage.
Hey again
There is a fastboot guide in the first post I linked you to
If you can't get fastboot to recognize device in bootloader mode it is possible the USB port is broken, but more likely an issue with drivers, cord or PC
So try a new USB cable, or a different PC
Try try again with drivers, uninstall and reinstall
Unfortunately this type of trouble shooting is hard to do without device in hand
I have been searching for hours/days, can not find a solution. I recently unrooted my Nexus 7, 2012 WIFI to download and try the new stock Lollipop 5.0 . I found out the the 5.0 was too buggy and kept freezing up my Nexus. I decided to revert back to 4.4 using the nexus toolkit (as I have many times in the past) and in the process lost my recovery option while in bootloader mode (was on a friends pc and had loose USB cable). Because I can not access the system to enable USB debugging. I am now on my own PC using a good USB cable I cant get ADB to recognize the Nexus. I have tried many drivers. I am thinking this is considered a hard brick scenario. When I do a reboot in bootloader mode, I get gray screen. When I try using recovery, I get dead droid with upside down triangle. Any help would be appreciated. I am not a rookie at this but also not a pro so I need help.
Remember, I do not have USB debugging enabled, nor can I boot up to access dev options. I can go into bootloader and adb modes but can not get adb or nexus toolkit to recognize. Thanks
Anyone?
Hi all,
I greatly need your help or some advice. I searched for more than 6h yesterday and Im surprised I couldnt find a solution to my problem.
Typical stuff : I broke the screen of my Nexus 4, that is completely stock 5.0.1. The phone is unrooted, bootloader is locked and obviously USB Debugging is disabled.
I need to backup some data from my phone : pictures, notes and if possible my contacts.
When I connect my phone via USB to my PC, I cant browse my files since my screen is locked. My screen is not responding at all, so no way I can unlock it. Only thing I can do is install new applications on my phone, but no way to launch them since I'd need to unlock my screen again.
I have installed adb and fastboot in order to try and use Android Screen Control, but I dont have USB Debugging enabled.
So I read that I could sideload a kernel that has USB Debugging enabled by default.
I got into Recovery Mode, and tried sideloading a zip file containing a Kernel found on the forum, but I always get an error saying the footer is wrong and the signature of the file didnt pass verification. I guess I can only sideload OTA updates ?
I tried fastbooting CWM recovery, that also didnt work.
adb devices command lists my 'recovery' device.
At this stage, all I need is to either be able to unlock my phone so I can access my files via USB (i tried few apps without success), or to enable USB debugging so I can connection using sideload, use Android Screen Control, reset the pattern lock, and backup my phone.
Also, USB OTG isnt enabled by default on Nexus 4, so that's another dead-end
So what are my options ? Where could I find a kernel that has USB Debug enabled, and how can I sideload it considering phone is not rooted, and bootloader is locked (unlocking it and whipping data defies the purpose).
THANK YOU for any advice!
There is nothing you can do with a locked bootloader and no custom recovery. Sorry man, but you're not going to be able to access your data.
Sent from my Nexus 9 using XDA Free mobile app
I've exactly the same problem, but my bootloader is unlocked and I'm rooted.
I'm also on a Nexus 4 with 5.0.1 and I'm trying to get control over my device from my Windows PC. But I don't know which kernel to use and how (yet) to enable USB debugging.
Help is appreciated.
Joakim_Lind said:
I've exactly the same problem, but my bootloader is unlocked and I'm rooted.
I'm also on a Nexus 4 with 5.0.1 and I'm trying to get control over my device from my Windows PC. But I don't know which kernel to use and how (yet) to enable USB debugging.
Help is appreciated.
Click to expand...
Click to collapse
All you need is a custom recovery to boot into to access your files. If you don't have one, download the latest version of twrp from here. http://techerrata.com/browse/twrp2/mako
Then flash that using fastboot. If you need help let us know.
Sent from my Nexus 5 using XDA Free mobile app
Hmm, "error: cannot load 'open recovery-twrp-2.3.2.3-mako'.
Sure usb-debugging doesn't have to be enabled?
Joakim_Lind said:
Hmm, "error: cannot load 'open recovery-twrp-2.3.2.3-mako'.
Sure usb-debugging doesn't have to be enabled?
Click to expand...
Click to collapse
You have an ancient version of twrp. Install the latest. I'm positive you don't need usb debugging enabled.
Sent from my Nexus 5 using XDA Free mobile app
Yes, you're so right! I also missed .img in the command
But what kernel would you recommend me to use so I have usb-debugging I can have usb-debugging enabled?
I am in almost completely the same situation! My N4 fell yesterday and shattered at the bottom right hand corner. No the touch screen doesn't work and there are sections of the screen that are black. However, I have...
root
cwm recovery
stock 5.0.1 kernel
windows 7
adb not working
fastboot working
usb debugging disabled
a need for usb debugging to become enabled.
I would like a kernel with usb debugging enabled and instructions on how to install it. Or if you have another fix, instructions on that.