Hi all,
After a long time, I decided to play with my Nexus 7 again. About a year ago, I bricked itsomehow (don't remember how exactly).
As a result, only the bootloader is installed. So no (custom) recovery and/or ROM. Today, I tried to flash the stock rom with the Nexus Root Toolkit but it didn't work.
My computer (Win 8.1) was not able to recognize my Nexus 7 in fastboot mode.
The device manager in windows labels my nexus as an unknown device of which the device descriptor request has failed.
I already tried to install many different driver packages (while removing the device from the device manager) but it did not work for me. Everytime, the tablet is seen as an unknown device.
I also tried to update the driver manually by right clicking on the unknown device in device manager and clicking update driver software and then manually selecting this http://support.asus.com/Download.aspx?SLanguage=en&m=Nexus+7&p=28&s=2 driver but it does not recognize any driver.
So in short, my pc, which runs windows 8.1 is unable to see my Nexus 7 (which is bricked and has no rom nor custom recovery installed) when it is in fastboot mode. Therefore I am unable to install another rom.
Any thoughts on this problem? Thanks in advance.
I sent you a PM regarding this issue and a potential fix. If it works, i'll post the detailed info here later
Related
I'm having one heck of a problem here. So I've got my Nexus 7, on stock Android, but rooted and unlocked.
I wanted to try Paranoid Android, so I installed the TeamWin Recovery using the Nexus Root Toolkit, then flashed the ROM and wiped cache/dalvik. I tried to boot into the new ROM, but it just stayed on the boot animation. So I looked up the issue, and the solution seemed to be return to stock Android, then flash Paranoid Android again.
So I tried to use the 'Flash Stock and unroot functionality' of the Nexus Root Toolkit, which proceeded fine until the copying of 'system' onto the device... This lasted for about an hour without progress, so I decided to try again with a different version of stock Android. This too didn't work.
So then I (foolishly) rebooted the tablet. But when I got back to fast boot, it didn't show up in Windows (on either of the two machines I have here, and with two cables that have both worked previously, in multiple USB ports). The specific error is that it shows up as an unknown device (which is fine) but also in the device manager there is error 43, which states that the USB has malfunctioned so it has stopped.
For that reason, it's impossible for me to connect it to a computer or even re(install) the proper drivers for it. And as it doesn't have a working OS, i can't get to ADB either. So right now I can't think of anything that will work - no fast boot, no recovery, no connection to a PC.
Any ideas?
Really, no ideas? Come on XDA Developers, you're my only hope <3
Hi there!
ive got the same issue and i can tell what is NOT working to fix this problem:
deleting ALL usb drivers from pc and installing adb drivers, windows troubleshoot and nrt
i'm just like confused but i think it's all windows fault, if i could i would trie on linux or any other pc os
Evening/afternoon/morning depending on where you are.
I managed to successfully unlock the boot loader and then root my Nexus 7 using the Wugfresh Nexus toolkit and installed the latest TWRP recovery. All was going great, I decided to flash a ROM, it went well but never booted into it. I went back into recovery and stupidly deleted/wiped more than I should and long story short I have a tablet with no OS and the SD card has been wiped so I cannot flash the rom.
I have been for the past several hours trying to get the device to appear as mass storage so I could push out the rom but I am not able to that. I can see the nexus 7 appearing as a Android device in Windows Device Manager with the driver exclamation mark. I have tried to install the driver for it from the SDK folder and also downloaded the drivers from ASUS (both are the same?) but the Driver Wizard keeps saying the driver cannot be found.
I can still get into bootloader and recovery, when I do go into TWRP recovery, I go to mount option and see the USB-OTG option but I cannot check the box next to. I'm thinking I will need to get a appropriate cable and get the rom onto the device that way but will have to wait for morning when the shops are open.
I still have hope as I do have the recovery image but need the advice of the learned people of this forum to help. I am using Windows 8 in case it makes any difference, can use win 7 if anyone thinks that will make a difference? When its in bootloader the tablet then appears as a Android Phone in Device manager.
Thanks in advance to suggestions, please leave all cutting remarks at the door
Update: When I am in recovery mode on my Windows 7 machine, the tablet appears under the Android Phone section. Not sure if it helps but thought I would add that.
Can you get the device to show up in ADB? If so you can push the ROM through ADB.
mustbepbs said:
Can you get the device to show up in ADB? If so you can push the ROM through ADB.
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Click to collapse
Dude you were spot on, the nexus had ran out of juice so I had to painfully charge it to at least 10% before I could try it. Just to clarify, I got the device into recovery mode, in Device Manager it was appearing under Android Phone as ADB integ Port (something to that effect) and then pushed out the rom to the SDCARD using the ADB push command. Managed to install the SmoothRom and its loaded fully
My windows 8 laptop must not have a driver or something not compatible as opposed to my windows 7 PC. Although on the Win 8 laptop, when the device in Fastboot it does appear under Android Phone but when the device gets to recovery, it moves to the Unknown device. Anyway my ordeal is over and it has been nervy!
Hope this helps someone?
Hi guys,
this is my first post here, so please be tolerant.
I have a Nexus 4 that is rooted and bootloader unlocked. Today I made the mistake to start the OTA update for version 4.4 and after that it was not able to restart, only showing the "Google" sign.
So I wanted to use adb sideload, but the device is not able to connect to my computer. The problem is that it is classified as "unknown device" and therefore it cant communicate. I already tried to reinstall the SDK and PDAnet driver, but the problem is that the the device is still unknown.
I already tried it with different pc and also with uninstalling all drivers, still no success.
I also tried the factory reset from the recovery manager, but it had no effect.
For now I am able to start fastboot mode, but as I already said I have no chance to communicate with the device.
Hope you guys here have some more ideas.
Ok, here goes my story.
Just a week ago from the date this was posted, I decided to update my recovery (TWRP) through ROM Installer. Surprisingly, I didn't see TWRP at all in the "Recoveries" section of the application. Stock, ClockworkMod Touch, regular Clockworkmod (no touch), and unofficial Clockworkmod were available - from what I can remember. I decided to use Clockworkmod (no touch) to install Paranoid Android. Coming from OmniROM, I factory reset and flashed the .zip.
Flashing ended in error with Status 7. A while before I had used ClockworkMod Touch to try another ROM and had no such issue. I ignored the error and restarted my tablet hoping that it would still boot fine. It rebooted, gave me the Google logo for about 5-10 seconds and automatically rebooted into recovery.
I saw a bypass for Status 7. Removing some lines from the updater-script was the solution. Having no access to my Nexus 7 storage, this bypass is unusable
I tried flashing a new recovery using flashboot fastboot. After verifying that I had my drivers installed (Universal ADB by Koush), I opened up adb in the command line (Windows) as an administrator. I could not see my device. I tried the drivers from Asus, multiple USB 2.0 ports, and a different USB cord, but same results. I tried on a different computer. Still no detection.
Systems used: Windows 8.1, Windows 7 (x64), Windows 7 (x86)
I tried using Wug's Toolkit and used Flash Stock + Unroot, since it didn't need USB Debugging enabled. Same results...
I also tried plugging in another Android phone (LG Optimus Dynamic II) to see if Windows would recognize it. Windows recognized it, installed drivers automatically, and was recognized in ADB immediately. This practically unknown phone (XDA doesn't have a section for it yet) could be recognized, but my world famous Nexus 7 2012 can't be seen.
I have absolutely no idea of what to do now...
Are you on the bootloader screen when trying to use fastboot?
PrizmaticSmoke said:
Are you on the bootloader screen when trying to use fastboot?
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Click to collapse
Yes. Every time I use fastboot, I am in the bootloader.
I'm not new to this at all, so say whatever you need to ^^
The main problem is my PC not recognizing my Nexus 7 through adb. Again, I have used multiple cables with no success.
The computer I am using for this runs Windows 7 x64. I have only tried using USB 2.0 ports to connect my tablet.
Thank you!
Might try deleting the drivers and starting over. I had some issues with adb drivers for both the N7 and the kindle fire on windows 7 as well, but eventually got both working by doing this several times.
I'm assuming you ticked the option for softbricked when trying the flash stock option? If not try again and check that option.
This thread http://forum.xda-developers.com/showthread.php?t=1907796 has a section on driver installation with good info and links too.
Hope that helps. Best of luck man, getting the adb drivers working properly seems to be finicky sometimes in my experience, and i'm no stranger to PC and software troubleshooting either.
PrizmaticSmoke said:
Might try deleting the drivers and starting over. I had some issues with adb drivers for both the N7 and the kindle fire on windows 7 as well, but eventually got both working by doing this several times.
I'm assuming you ticked the option for softbricked when trying the flash stock option? If not try again and check that option.
This thread http://forum.xda-developers.com/showthread.php?t=1907796 has a section on driver installation with good info and links too.
Hope that helps. Best of luck man, getting the adb drivers working properly seems to be finicky sometimes in my experience, and i'm no stranger to PC and software troubleshooting either.
Click to expand...
Click to collapse
Thank you so much for all of this! I'll need all the luck I can get...
By the way, I checked that softbrick option ^^!
I have windows 10, and am attempting to root and flash a custom recovery and ROM onto my nexus 7. Everything functions as intended until i have to enter bootloader. windows 10 is not able to recognize the device drivers when plugged in while in bootloader mode. It simply says that the device is not recognized. I read that the issue is needing to edit the .INF with updated hardware ID's for the device and reinstall the drivers using that INF file. However, trying to do that yields no results because when i uninstall the driver i cant find the device plugged in anywhere to be able to update its drivers in the device manager, and simply trying to override the devices currently installed drivers via device manager also does nothing. I even tried installing the driver update while the device was in bootloader via device manager (the device is recognized in device manager but has a yellow exclamation point and says device descriptor failed) with no results. What am i doing wrong? can anyone help? I've never had an issue this frustrating while trying to root an android device. Is it a windows 10 issue? I need a complete (and simple to understand) step-by-step please.
No help?