Hey Everyone,
Backstory: Softbricked my nexus 7 - its now in a bootloop. I am running Cyanogenmod 10.0 (I believe), Rooted and running ClockworkMod Recovery, and am NOT USB Debugging Enabled. Now in the process of reflashing Nakasi JZO54K (4.1.2) to soft-bricked Nexus 7 via fastboot.
I'm trying to access my nexus 7 (2012) via adb but my computer will not recognize my device. I am currently following Comminus's flashing guide, but I can't even get my computer to recognize my device via the command prompt "adb devices" - nothing comes up.
I have tried to install/update the usb drivers with the ones from Asus's website - those did not update the drivers. I also tried using the drivers i downloaded through the android sdk located in the android sdk folder (C:/user/AppData/Local/Android/android-sdk/extras/google/usb_driver) and those did not successfully update the drivers either. But my device is being recognized in the device manager "grouper" rather than "android".
I might be what in Comminus's words, "driver hell". But I don't know what that means or what to do from there...please help anybody!
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One N7, strictly stock, is recognised in Win 7 and in fastboot mode i.e no issue.
The other N 7 is root and unlock.
Under Win 7 home premium:
All of a sudden it is not recognised and device manager shows Android composite adb interface
but the windows driver is missing ( when I plug it Win 7 is not showing that a driver is installing).
There is no mention of N 7, not even a yellow exclamation point, let alone no mention of portable devices.
In adb mode the N 7 is recognised. Bootloader is accessible but fastboot devices does not show the N 7.
I cannot access CWM recovery 6.0.1.0 neither through bootloader nor from Rom manager.
This N 7 has stock JB 4.1.2 (JZ054K). I have installed SuperSU, Rootkeeper and Rom Manager.
Under Win 7 professional it is recognised, it shows in device manager and in adb but not in fastboot mode after going in bootloader mode, and still cannot access recovery mode (waiting for device if I try to do that).
I need help to solve this issue. Thank you
I prefer not to use a toolkit.
I stupidly started the OTA update on my rooted device and it failed. Now I am stuck at the 4 circles animation after the Google logo.
I've tried following the guide to flashing a factory image with fastboot / return to stuck but at the step where I'm supposed to be able to list devices (step 3 of driver installation), no devices are listed.
In my Device Manager, the Nexus 7 is listed as MTP USB Device with a yellow warning triangle over the icon.
I've gone over the installation instructions many times and repeated the process 4 times.
What else can I do?
Now I see Android Device and under that Android Bootloader Interface in my Device Manager (using Windows 8) when I am in fastboot.
I tried updating the driver per instructions (although it only has instructions for up to Windows 7) and the message says that I have the most updated driver already.
However, my device is not listed once I try the command "adb devices"
I guess I am in "driver hell" but what how do I fix this? I've tried installing and uninstalling everything multiple times.
My N7 was rooted and has CWM. (Yes I know I know that I shouldn't have done OTA but I made a mistake.)
I had a similar problem, though on mine the installer ran after I said not to. Afterward my tablet would start up but stay on the four pulsing circles. I tried waiting and after an hour figured that wasn't going to work.
This is how I got my tablet working again. Mine is the wi-fi 2012 version. I first followed that same guide as you and it wouldn't work. So I tried a diffrent way.
after step 8 on that Flashing a Factory Image with fastboot / return to stock guide, installing the "Google USB Driver",
Download and install the Nexus Root Toolkit from Wugfresh (can't post links yet).
Set the tablet as the Nexus 7 (Wi-Fi Tablet) and Android build 4.3.0 JWR66Y
Then Flash Stock and Unroot under Back to Stock with Soft-Bricked/Bootloop chosen.
I chose the same factory image that I had set my tablet as, 4.3.0 JWR66Y.
Once it ran I was back on 4.3.0 and had a working tablet again.
annabwashere said:
However, my device is not listed once I try the command "adb devices"
I guess I am in "driver hell" but what how do I fix this? I've tried installing and uninstalling everything multiple times.
Click to expand...
Click to collapse
http://www.wugfresh.com/
Download and install Nexus Root Toolkit.
It comes with several ADB drivers and shows information about that.
Worked! Thanks!
I Softbricked my nexus 7 a while back its now in a bootloop. I am running Cyanogenmod 10.0 (I believe), Rooted and running ClockworkMod Recovery, and am NOT USB Debugging Enabled. Now attempting to reflash Nakasi JZO54K (4.1.2) to soft-bricked Nexus 7 via fastboot.
I'm trying to access my nexus 7 (2012) via adb command prompts will not recognize my android device - serials do not appear when "adb devices" is typed.
I am currently following Comminus's flashing guide. When I go to device manager in windows, the android device is named "grouper" rather than "android" as I have seen before.
I don't think the root toolkit will solve this because I don't think I can even send commands to the device at this point.
Please help someone...I really don't know where else to look for help about this.
adb commands don't work in fastboot. Only fastboot commands work in fastboot.
Download the factory image from Google, extract, and run the flash all batch script while your N7 is connected in fastboot mode.
I mistakenly formatted everything on my G2 so I have no OS installed and it just boot loops into TWRP. I'm unable to adb push or adb sideload because windows 8 won't load the correct usb driver. I have installed the android sdk and the google usb drivers. Have also installed the LGUnited 3.1 usb drivers to no avail. Have also disabled the signed drivers checking, . I'm running windows 8.1 x64. any ideas which driver to use?
I have a Nexus 7 with a locked bootloader and only TWRP on it. No Android OS on it of any type or version. Can't unlock it as computer can't recognize the device after installing drivers from Android Toolkit. USB debugging setting is unknown. Even installed WUGFresh on my computer and no go with that software. Any ideas what I can do?