Database Users

Recovery only works when USB is plugged in

Hey guys,
I've been noticing something unusual with my tablet. The stock hard-reset recovery(as well as CWM) only works with USB plugged in. When it is not plugged on the computer, it hangs on the black screen with the Google logo(when it is oem locked, there's a lock on the bottom). I am also a Galaxy S2 user so I know that I didn't need the USB plugged in, in order to enter the recovery mode.
Is this normal for the N7 tablet? or is there something wrong with it?
Thank you

kaywoo said:
Hey guys,
I've been noticing something unusual with my tablet. The stock hard-reset recovery(as well as CWM) only works with USB plugged in. When it is not plugged on the computer, it hangs on the black screen with the Google logo(when it is oem locked, there's a lock on the bottom). I am also a Galaxy S2 user so I know that I didn't need the USB plugged in, in order to enter the recovery mode.
Is this normal for the N7 tablet? or is there something wrong with it?
Thank you
Click to expand...
Click to collapse
I have the same issue, and I always thought it was just me. Going to try a different recovery when I'm back home.

cheami said:
I have the same issue, and I always thought it was just me. Going to try a different recovery when I'm back home.
Click to expand...
Click to collapse
Yeah it's weird. Even after coming back to stock, unrooted, the hard-reset via stock recovery doesn't work unless USB is plugged in. Maybe some files are missing

Wow, I'm glad I stumbled on this thread, I was going nuts trying to figure out why I couldn't boot back into CWM after going back to the stock image and applying the OTA .zips.
Confirmed, I can get it to boot into CWM from fastboot only if I have the USB cable plugged in. Otherwise it just hangs on the Google splash screen.
Weird.

I've been able to boot into recovery using the app "quickboot" which had an option to reboot into recovery. My usb cable isn't plugged in.
Sent from my Galaxy Nexus using Tapatalk 2

This sounds a bit like my Nexus S i9020. It will only go into bootloader without the usb, and only go into download mode with USB attached (although it doesn't have to be powering it). This is the same on both handsets I've used. Maybe not a 'flaw' and more a nod to using fast boot/adb?
Sent from my Nexus S using xda app-developers app

I am currently having the same problem. Did anybody come up with a fix for this?

I'm having the same issue with the nexus 7. I've found out that you can boot into recovery if you have ROM Manager installed and select reboot into recovery.
Does anyone know if this is an OS issue or recovery issue?

Interesting. Was wondering why I couldn't get into Recovery from the Bootloader.
Another bug for me is that if I boot into Bootloader with the USB connected, I cannot make any selection using the volume keys. Only works if I boot in first without USB connected, then connect once I'm booted.

Its a bug, guys learn to search in the Development threads, I'm sure its being worked on,personally I've been able to get into recovery without have to connect via USB, if all else fails you can enter recovery via USB and ADB, by issuing the command adb reboot recovery in terminal/cmd

I had the same issue last week. Not sure what changed but now I'm able to get into recovery using the reboot menu or good mngr/rom mgr. No need for usb. I'm on modaco rom and used both clockwork and twrp.
Sent from my PG86100 using xda app-developers app

I have one more problem...
When I connect USB, the keys don't work in bootloader so can't try recovery with USB cable on.
Any solution for this?

cheami said:
I have the same issue, and I always thought it was just me. Going to try a different recovery when I'm back home.
Click to expand...
Click to collapse
I have the same problem.
LTE Galaxy Nexus
Nexus 7 (16gb)

Miracle.vl63 said:
I have one more problem...
When I connect USB, the keys don't work in bootloader so can't try recovery with USB cable on.
Any solution for this?
Click to expand...
Click to collapse
There are two different versions of CWM- one uses the power and vol-up/down buttons for keys- the other used the tablets touchscreen for button press functions.
You may have installed the touch(screen) version of CWM- try using the touchscreen for controls.

Same issue here. I can get to recover either connected or via rom manager.
Sent from my MIUI Motorola Star Tac

omegajester said:
Same issue here. I can get to recover either connected or via rom manager.
Sent from my MIUI Motorola Star Tac
Click to expand...
Click to collapse
I too can get into recovery via ROM Manager. I read somewhere that pulling the battery might help. I know that's a bit of a pain on the Nexus 7, but I'm going to try that when I get home later to see if that helps.
LTE Galaxy Nexus
Nexus 7 (16gb)

Trikkenut said:
I too can get into recovery via ROM Manager. I read somewhere that pulling the battery might help. I know that's a bit of a pain on the Nexus 7, but I'm going to try that when I get home later to see if that helps.
LTE Galaxy Nexus
Nexus 7 (16gb)
Click to expand...
Click to collapse
Nope, disconnecting the battery didn't change anything. Wug Fresh (Nexus Root Toolkit developer) informed me on Google + that it's a Google issue and it should be fixed in a future update. For now i'll be either plugging in USB to computer or ROM Manager.

I can't even get into the boot loader with my usb plugged into a charger not a computer

askho said:
I can't even get into the boot loader with my usb plugged into a charger not a computer
Click to expand...
Click to collapse
Try Quick Boot
Free, easy to use, will boot to bootloader, recovery, reboot etc... requires root of course, you already have that.

i dont't have root because it was screwed up right fromt he get go

[q] unbricking nexus 7 (no answer for my specific problem)

I was trying to unroot my nexus 7 and my computer crashed whilst doing it. My nexus 7 is on the ClockworkMod Recovery screen and the sideload started and then the computer crashed. It won't move from the screen and the only way I know how to unbrick needs USB debugging to get into fast boot mode and I can't because I can't load android. Can someone please help me i'm scared it won't work again.

You can reboot to the bootloader manually and fastboot flash the stock image.
Sent from my Nexus 7 using Tapatalk HD

najaboy said:
You can reboot to the bootloader manually and fastboot flash the stock image.
Sent from my Nexus 7 using Tapatalk HD
Click to expand...
Click to collapse
Wouldn't I need USB Debugging for that, if not how do I do it?

TheGaskin said:
Wouldn't I need USB Debugging for that, if not how do I do it?
Click to expand...
Click to collapse
Don't need adb, just reboot it into the bootloader (fastboot mode) and load one of these images...
https://developers.google.com/android/nexus/images#nakasi

TheGaskin said:
Wouldn't I need USB Debugging for that, if not how do I do it?
Click to expand...
Click to collapse
To reboot, hold power and both volume buttons for approx. 30 seconds. Use the image that insanity213 posted.
If you need a quick primer on fastboot, read http://wiki.cyanogenmod.org/wiki/fastboot

[Q] HELP: How to flash Google factory image without USB debugging?

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.

Need help recovering my n7

When I turn my n7 on all I get is the android with the red triangle over it and underneath it says no command. I'm unable to do anything with it. When I press power & volume up all it does is dim the screen/undim it.
From what I've been reading, I think I need to load a recovery image, but when I try to load it, I'll either get a DLL error, or in command prompt it'll give me an error saying the image can't be loaded.
The DLL error is something like adbwin.dll & its frustrating because its in the sdk\tools folder, I can see it & I've tried setting environmental variables in control panel/system to the DLL path & I still can't get my system to see it. Any help would be appreciated.
I'm using windows 8 and the recovery image I tried was twrp 2.2.1. I'm missing a step somewhere I'm thinking.

No suggestions? Uggghhhh
Is there anyway to install drivers without enabling USB debugging?

Look up Wugfresh's Nexus Root Tool Kit.
Once you install all of the drivers it'll be a breeze....

danvee said:
Look up Wugfresh's Nexus Root Tool Kit.
Once you install all of the drivers it'll be a breeze....
Click to expand...
Click to collapse
Tried this already too just last night. I've tried using samsungs mobile phone drivers, asus', and the naked drivers. I can't get this thing to be recognized. its not even charging when plugged in to my PC. I've also tried it on a w8 PC & win 7 PC.

That's an entirely different issue then. Try a different cable?

danvee said:
That's an entirely different issue then. Try a different cable?
Click to expand...
Click to collapse
Tried a few. The original stock cable, a cable from my cell phone & a diffferent phone. I also tried different USB ports lol. I've tried everything I can think of. Thanks for the suggestions though. Open to more.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

Have you tried to do something simple at the error screen with fastboot? For instance just do a fastboot devices? Does it return anything? Have you properly configured your PC to run adb and fastboot? Are you trying to run fastboot/adb from the directory all the files are stored in? I know this may be basic stuff to some, not sure of your level of skill, but even still professionals still can overlook something.

Here is the latest Android Composite ADB Interface Driver straight from SDK.
http://d-h.st/kDu
If you can get into bootloader then you can erase your existing partitons then flash all the images from the Nexus Factory Images package to restore your device to stock.

SlowCobra96 said:
Have you tried to do something simple at the error screen with fastboot? For instance just do a fastboot devices? Does it return anything? Have you properly configured your PC to run adb and fastboot? Are you trying to run fastboot/adb from the directory all the files are stored in? I know this may be basic stuff to some, not sure of your level of skill, but even still professionals still can overlook something.
Click to expand...
Click to collapse
I tried running cmd to check for fast boot devices but nothing came up. Tried root kit to detect & nothing is detected either. All my files are located in C:\ which is where I had fast boot pointed to.
I'd say I'm pretty noob at this. It was originally rooted & no orobs till this instant. I'm pretty positive adb/fast boot is installed correctly.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

Username invalid said:
Here is the latest Android Composite ADB Interface Driver straight from SDK.
http://d-h.st/kDu
If you can get into bootloader then you can erase your existing partitons then flash all the images from the Nexus Factory Images package to restore your device to stock.
Click to expand...
Click to collapse
I think my problem is I can't get into anything on my tablet. I can't get into boot loader & I can't enable USB debugging. I'll try the drivers tho & see if it helps
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

thestrangebrew said:
I think my problem is I can't get into anything on my tablet. I can't get into boot loader & I can't enable USB debugging. I'll try the drivers tho & see if it helps
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Click to expand...
Click to collapse
USB debugging is not needed to use Fastboot.

Have you tried power and down? That's how you get into recovery. I just reread the first post and you stated that you're pushing power and up volume.
Sent from my Nexus 7 using Tapatalk 4 Beta

I'm thinking along the lines of a hardware issue with the usb port...

yea I've tried power + down also. @ user name I'm unable to get into boot loader then. fast boot doesn't detect any fast boot devices
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

danvee said:
I'm thinking along the lines of a hardware issue with the usb port...
Click to expand...
Click to collapse
the device charges when plugged into the wall. not on the PC. so I'm sure its hardware. I'll try to post some screen shots later this evening.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

Unplug the battery?
Sent from my Nexus 7 using Tapatalk 4 Beta

I was going to start dismantling it as a last resort, I'm thinking this wknd might be time to do it.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

[Q] Usb debugging without android (through recovery?)

Hi,
I kind of "bricked" my nexus. Kind of, because recovery is working, and I can even start the device in android. Problem is error windows pops up and I can't control a thing.
No big deal you say, but I deleted by accident the .zip of the rom I had on the device. AND USB DEBUGGING WAS OFF...
I can't transfer any file to the device, I can't start usb debugging, and every tutorial on the internet says to put the device in usb debugging -> it's bricked, that's the whole point, so WTF!
sorry, I didn't respect the unwritten rule stating you should'nt ask for help on a forum while angry furious
Hope any of you can help me...
I should add I'm really not a poweruser. I've been flashing roms for a long time following carefully the rules, but really I have no idea what I'm doing <insert meme>, so adb and stuff like that I've never used (directly).
Thanks!

Use fastboot, see the sticky that says flashing a factory image using fastboot/return to stock.
Sent from my Nexus 7(2012) that has zero issues.

Thanks for you answer.
Still, I have to turn on USB debugging
Enable usb debugging on your device (found under Settings > Developer Options)
Click to expand...
Click to collapse
I can't do that because I can't use my nexus in android.

Bipo said:
Still, I have to turn on USB debugging
I can't do that because I can't use my nexus in android.
Click to expand...
Click to collapse
USB debugging is system feature. If you cannot load system you don't need to bother about it. You can only use fastboot as writen before.

Bipo said:
Thanks for you answer.
Still, I have to turn on USB debugging
I can't do that because I can't use my nexus in android.
Click to expand...
Click to collapse
Incorrect.
Fastboot works even when there is nothing on the device save the bootloader. Follow the instructions in the flash factory thread linked above and don't apply and personal prejudices-- it does work, and is the "right" way to do things. If you use a Windows computer, then you may also need the naked fastboot drivers (which can also be found by searching).