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.
Related
I updated to 4.3, which nuked my TWRP recovery. I have been trying to get TWRP back on my Nexus 10 so I can reroot. The problem is, my computer refuses to see it in Fastboot mode no matter what I do. The drivers are the main issue. I can't get ADB to detect my device in Fastboot.
I have followed all of the instructions on the Wugfresh tool exactly and I still have the same issue. By default, my Nexus shows up as a "Samsung Mobile USB CDC Composite Device" in Fastboot mode. It shows up as an ADB device in normal boot. USB debugging is enabled.
I have tried all of the drivers: Raw, PDAnet, universal, and Samsung. All are giving me the same result. I even plugged my Nexus 10 into another computer and tried the process from scratch and that computer also sees it as a "Samsung Mobile USB Composite Device". Changing the device manually to something like an Android ADB device will still not allow Fastboot to see it.
I'm all out of ideas here. I have uninstalled everything, removed all USB devices, rebooted, tried different computers, etc. Nothing is working. What am I missing?
Update: After several hours, I managed to get my computer to recognize it in fastboot long enough to flash the new TWRP manually and then got rooted from there. What a nightmare!
I am still having this problem. I tried all your steps and I am still having the problem.
Sent from my SGH-M919 using xda premium
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?
Click to expand...
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 ^^!
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
Hello,
today I tried to root my phone with Nexus Root Toolkit. The first step was to unlock the phone so I could root it. After I unlocked it I can't get the phone to connect to the PC. I've tried uninstalling the drivers(with USBDeview also), restarting the computer, different cables, different ports, USB debugging on/off, MPT/Camera, restoring to factory settings. Nothing works. The only time the phone registers in the Device Manager is when I put MPT with USB debugging, and I get an exclamation mark next the Nexus 4 device. Trying to update the drivers results in no drivers found. Downloading the drivers manually doesn't work either. What I find especially troubling is that when I connect the phone without USB debugging the phone doesn't even react to the connection. There is nothing in the status bar. The phone is charging tho.
edit: I've now tried 2 different computers (running Win 8.1, and 7), and it's the same problem, so I'm pretty sure the phone is the problem. Is there anything I can do from here?
Since I can't connect to the PC is there a way I can do something 'OTA' to fix it? Will I be eligible to update to 5.0 OTA since my phone is unlocked(stock ROM tho)?
edit2: I've now locked the bootloader, but the issue persists.
edit3: Uninstalled NRT, and the drivers it provides, and installed Google USB Drivers over the SDK Manager. I now have two devices: one Nexus 4, one Unknown Device, both with exclamation marks next to them. I think this double entry could be due to some remaining driver somewhere. Gonna try to remove every Nexus driver I can find, and then try with Google USB Drivers again. Fingers crossed.
edit4: Tried naked drivers. No luck...
Appreciate the input!
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?