So I am having a lot of problems with trying to root my nexus 7. I'm pretty sure it boils down to a driver issue but I'm not sure. I have tried installing the correct drivers over and over again also uninstalling other hardware manufacturers drivers and I cannot get adb to recognize my device when it is shut off and in the boot loader.
When the tablet is on and I have debugging on, adb shows up and is recognized, however my problem is that whenever I reboot into the boot loader I lose adb recognition. So therefore I can't root or do anything else. Fast boot commands work fine its only the issue with adb.
If anyone has any suggestions as to what I can do I would really appreciate it. I don't know if its just a hardware issue or something I am doing wrong on my end.
This is also not my first time manually unlocking/rooting a device
When you initially connect, the device shows up as a "Nexus 7".
When you reboot into the boot loader, the device name changes, and there is no driver for that device.
As far as I could tell, I would have to do the root process under Linux to avoid this issue.
As for me, I just ignored the issue. By the time you reboot the bootloader, you are already rooted.
The only thing you do after the reboot is rename a file. For now I am missing that step...
Yeah I'm using windows xp. When its in boot loader it does change names. I can unlock the bootloader via fastboot but can't do anything with adb. Lol I don't know what else I can do, I'm at a loss.
kevlars9 said:
Yeah I'm using windows xp. When its in boot loader it does change names. I can unlock the bootloader via fastboot but can't do anything with adb. Lol I don't know what else I can do, I'm at a loss.
Click to expand...
Click to collapse
Like I said - I think you are done...
Install a terminal on the Nexus and see what it says to "su". I use one called "terminal emulator". Works fine.
I think fastboot uses adb.
If you connect your Nexus, and type "adb devices" in a command window what does it say?
I believe it says devices attached or something like that. (Not at my computer) but doesn't give me a serial # like I think it should.
If you do not have USB Debugging checked, "adb devices" will just show the List of devices line.
If I set USB debugging on, "adb devices" also shows the Nexus serial number.
If you don't see that, I would double check the device driver you are using.
Under Device Manager, Android Phone, Android Composite ADB Interface it shows:
Driver: Google Inc.
Date: 5/24/2012
Version: 6.0.0.0
Digital Signer: google inc.
Well if I have USB debugging on and tablet on and do adb devices I get the serial # but once I go into boot loader and do adb devices I don't get the serial #.
For device manager I can choose adb interface or adb original interface. I'll have more info when I get out of work and at my computer. Do you have a link to the drivers you used? Or where to find them. Because I have tried a couple of different drivers posted around to no avail.
BTW thanks for helping me out.
I would not use any posted driver - you don't know where that thing has been.
Download the SDK from Google; the correct driver is in there.
Just point the device manager to it when you install drivers.
There are a lot of good descriptions on installing drivers in the other nexus forums
But - again - I think your device driver is fine. You will not be able to talk to the Nexus from ADB after you boot the bootloader
Bootloader has a different device name which ADB can't use under Windows.
Use Linux if you want to do that.
ok, so pretty much what happens is when my tablet is powered on with usb debugging everything is fine and ADB is recognized. Now my problem seems to be when i reboot into the bootloader it seems as though the drivers dont stick and it asks me to install the drivers again and this is where i have had all of my issues. When i type in adb devices in, it just tells me "list of devices attached" and wont let me do anything else (fastboot works). Like i said i was able to unlock my bootloader but i cant flash recovery or do anything else.
When i go into device manage to select the drivers it gives me the option of choosing between adb interface, adb bootloader interface, adb orignal interface and nexus 7 bootloader interface. I have tried all options and nothing seems to work. I have tried multiple usb cords and ports.
If anyone else has any suggestions it would be much appreciated.
I didn't read through everything but your initial problem is adb doesn't work in the bootloader that's where you use fastboot commands either boot into a custom recovery or just boot up normal and make sure debugging is checked.
Try running fastboot devices and see if it shows up. What you need to do is have bootloader unlocked and dismiss the super user zip floating around here pot that on sd card download cwm recovery image floating around boot into bootloader then
fastboot devices
fastboot flash recovery name_of_file.img
fastboot reboot bootloader
select recovery from the menu
Flash the super user zip
Or download a rom that has root and put that on sd card instead of super user zip and after doing the steps above then selecting super user zip select the rom you downloaded and flash. If you're on Linux run sudo first.
Sent from my Galaxy Nexus using xda premium
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Hello,
I just got the OTA message for 4.4 and tried to install it but I got a bootloop. After clearing the cache and performing a factory reset in TWRP (which got installed through Nexus Toolkit) it still didn't work. Someone told me to perform a complete format through TWRP which I did (hindsight, I know) and now TWRP says I have no OS installed, adb won't see my device (I have the drivers installed) and when I go into the bootloader (which says FASTBOOT MODE) fastboot still won't recognize the device (nothing shows up on my PC either but that can be normal).
I'm at my wit's end here, is there anyone who can help me?
You need to realize that if you want to install OTA, you need to use stock recovery. Even though it is possible to flash through TWRP, it can still run into problems. Especially when you made root modifications to your device.
You don't have to do a full wipe for everything. There is a method to flash factory firmware without wiping data (link in my signature). After that if it still don't boot due to existing data, boot into a custom recovery and do a factory reset without wiping the internal storage.
But since you have custom recovery already, just go into the Development section, find a stock KitKat rom, download it and sideload it using TWRP (which is enabled it in the Advance menu).
eksasol said:
You need to realize that if you want to install OTA, you need to use stock recovery. Even though it is possible to flash through TWRP, it can still run into problems. Especially when you made root modifications to your device.
You don't have to do a full wipe for everything. There is a method to flash factory firmware without wiping data (link in my signature).
But since you have custom recovery already, just go into the Development section, find a stock KitKat rom, download it and sideload it using TWRP (which is enabled it in the Advance menu).
Click to expand...
Click to collapse
Yes I've tried that but I don't know how to sideload it. adb doesn't see my device, fastboot doesn't either and windows doesn't recognize the device (although I have the adb naked drivers installed).
fverswijver said:
Yes I've tried that but I don't know how to sideload it. adb doesn't see my device, fastboot doesn't either and windows doesn't recognize the device (although I have the adb naked drivers installed).
Click to expand...
Click to collapse
If it is connected adb should see your device while in TWRP. Fastboot only work in fastboot mode (bootloader screen), not in recoveries. If you have the UND installed then they both should work, if not it wasn't installed correctly. If you are using Windows 8 you need to disable driver signature before you can install UND (search google for that).
You could also make a bootable Ubuntu flashdrive, and use the ADB/Fastboot for Ubuntu link in my signature to install them.
eksasol said:
If it is connected adb should see your device while in TWRP. Fastboot only work in fastboot mode (bootloader screen)
Click to expand...
Click to collapse
I tried both. ADB devices gives me an empty line and fastboot devices (when in bootloader screen) gives me nothing at all. I've tested 2 different computers (both windows 7 x64) and it still won't detect it. When in TWRP windows tries to detect my device but it says "Unknown Device" and gives the yellow triangle.
fverswijver said:
Yes I've tried that but I don't know how to sideload it. adb doesn't see my device, fastboot doesn't either and windows doesn't recognize the device (although I have the adb naked drivers installed).
Click to expand...
Click to collapse
You might have to point the drivers to your phone. If you go into device manager, see if your Nexus 4 has an error. If it does, right click it, and then update the driver. Do a manual install, and point it to the .ini file for the driver
fverswijver said:
I tried both. ADB devices gives me an empty line and fastboot devices (when in bootloader screen) gives me nothing at all. I've tested 2 different computers (both windows 7 x64) and it still won't detect it. When in TWRP windows tries to detect my device but it says "Unknown Device" and gives the yellow triangle.
Click to expand...
Click to collapse
Fix your drivers, uninstall them and select the checkbox to delete the driver files, search Google on how to disable driver signature and try reinstalling the driver again.
or
Make a bootable Ubuntu flashdrive, and use the ADB/Fastboot for Ubuntu link in my signature to install them.
eksasol said:
Make a bootable Ubuntu flashdrive, and use the ADB/Fastboot for Ubuntu link in my signature to install them.
Click to expand...
Click to collapse
I did this and still the same, adb gives an empty list and fastboot gives nothing.
fverswijver said:
I did this and still the same, adb gives an empty list and fastboot gives nothing.
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Click to collapse
Try using a different cable and on different computers.
eksasol said:
Try using a different cable and on different computers.
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Click to collapse
I've tried 3 different computers, 2 different OSes and 3 different cables. Nothing seems to work. I'm really starting to panic now.
fverswijver said:
I've tried 3 different computers, 2 different OSes and 3 different cables. Nothing seems to work. I'm really starting to panic now.
Click to expand...
Click to collapse
Just to clarify, see attachment for the correct name of the device if UND is installed correctly.
If you tried it with Ubuntu, make sure you do the 1st step from here also:
http://bernaerts.dyndns.org/linux/74-ubuntu/245-ubuntu-precise-install-android-sdk
Same here
i installed the ota update normally with twrp installed everything went fine but im kind of disappointed in this update:/
eksasol said:
Just to clarify, see attachment for the correct name of the device if UND is installed correctly.
Click to expand...
Click to collapse
These are my findings:
Ubuntu:
- Bootloader (fastboot)
-- running lsusb in Ubuntu shows no device
- TWRP (adb)
-- running lsusb shows no device
Windows 7 (3 different computers)
- Bootloader (fastboot)
-- Windows gives the following popup, no device listed in Device Manager
- TWRP (adb)
-- Windows gives the same popup as on fastboot and this appears in the Device Manager:
fverswijver said:
These are my findings:
Ubuntu:
- Bootloader (fastboot)
-- running lsusb in Ubuntu shows no device
- TWRP (adb)
-- running lsusb shows no device
Windows 7 (3 different computers)
- Bootloader (fastboot)
-- Windows gives the following popup, no device listed in Device Manager
- TWRP (adb)
-- Windows gives the same popup as on fastboot and this appears in the Device Manager:
Click to expand...
Click to collapse
Is file transfering working atleast? If it is, then it's a software problem. If it isn't, then it could be a hardware problem, you can try replacing the USB charging board for the phone. Also some roms with corrupt files can cause this issues, so try a different roms if you haven't.
File transfer used to work but atm I'm unable to even connect it to a computer so I can't actually transfer any files. If I could I would flash a rom but no files = no flashing.
fverswijver said:
File transfer used to work but atm I'm unable to even connect it to a computer so I can't actually transfer any files. If I could I would flash a rom but no files = no flashing.
Click to expand...
Click to collapse
Get one of these: http://www.ebay.com/sch/i.html?_nkw=nexus+4+usb+charging+port+replacement&_sacat=0
If it don't work, then use the phone as a door stopper.
hey guys, I'm having the same problem here but with a Nexus 5 now.
Its been over a month and I've kind of gave up over the situation.
I couldn't resist to write a comment on the thread, since it appears to be the same problem as mine.
long story short, I decided to order an USB charging port to replace the one on the phone (as my last attempt).
Otherwise I will consider using the device as a door stopper.
Do not despair! Check this out: http://highonandroid.com/android-ro...r-android-in-a-bootloop-with-no-os-using-adb/
http://highonandroid.com/android-roms/how-to-copy-files-over-to-your-android-in-a-bootloop-with-no-os-using-adb/
i installed nokia xl rom into my device un fortunately i wipe the os and later i copy a rom file into my sd card and tried to flash tjat but it showing unable to open the zip. iam stuck with my company logo on the screen. twrp cannot open the zip and flash the rom. please help me in this issue.
thanks in advance
I'm new to the rooting and flashing scene, and i decided to root my lg g6 to remove all the bloatware and stuff, but when i need the device id to put it on the lg development site i cant get it since the cmd window doesnt recognize my phone in fastboot and keeps returning the waiting for device message, i already updated all the drivers and reinstalled android studio and sdk tools, and still have that message, any help would be appreciated !
Drivers are not installed correctly. Uninstall current ones and use the all in one ADB and fastboot install drivers.
Device LG G6
Model : G600LR30c
I was thinking of installing a custom os which requires TWRP recovery installed in the device which recuires the device to be bootloader unlocked. But when I use the command "adb reboot bootloader" in minimal adb the device never goes to boot menu, instead it simply restarts and then if I put the command "fastboot oem device-id", it never shows the id and keeps showing "waiting for a device" instead. Please help me resolve this.
P.S: I also tried to access boot menu using key combo. but in vain
If you can put the phone in Fastboot mode during powerup or restart, it's a Windows issue if it don't work. Windows must recognize the device via PnP and install a different set of drivers each time the usb mode changes. If it don't work when the phone is already in Fastboot mode, try different drivers.
I once had two sets installed, that from the device manufacturer and that ripped from the Google SDK(on XDA). This way all usb modes worked, but Windows couldn't perform the Reboot Fastboot/Recovery commands fom ADB like is the case here and the Windows software had, suitable drivers installed, to be able to access the phone if it was already set to Fastboot/Download etc mode.
That was a TI OMAP based LG L9 under Win7. Starting with Windows 8.1, Fastboot was no longer working at all, you could only perform disaster recovery via D/L mode with a stock image and then root the thing with a one-click rooter to be able to install a recovery from Android etc etc, but that was due to the no longer supported TI SoC. But Qualcomm also tends to completely abandon older SoCs.
I'm trying to flash Magisk custom boot.img using fastboot but it will never detect the device, tried everything in the first page of Google with different searches, nothing works. Tried downloading Samsung developer drivers from here, tried this tool while in fastboot and then while the device is booted normally, tried this 15 second ADB installer tool to install Google adb and fastboot drivers, tried Kies, tried uninstalling all the relevant devices and using the Windows default ones, tried another laptop, another USB cable, another USB port, many videos and articles but still nothing. When I run fastboot devices, it doesn't show me anything, adb devices works just fine and shows the device when booted normally, of course I run fastboot devices when I'm in fastload but nothing shows up.
My device is SM-N910C treltexx EGY EXynos5433, tried all this mainly on Windows 11 but also tried with the Samsung developer drivers on a Windows 10 device.
I have WSA installed with hyper-V and Virtual Machine Platform installed on 11, could this be a problem? Also I noticed that when I run adb reboot fastboot, the device just restarts, the same when I choose Run fastboot in recovery mode, the only way for me to get to fastboot is pressing power +home +volume down. Also Odin recognizes the device in fastboot just fine.
So how to solve this? Or is there a method to flash Magisk's boot.img without fastboot? Or an alternative that does its job?
With further research I managed to do it with Odin. Took the patched file and renamed it to boot.img, used 7z to make a tar archive out of it. Loaded it in Odin as an AP and it worked! I have been using Magisk 24.3 all along because there is an issue with 25.0 that makes it stuck on the logo screen on rooted Galaxy Note 4 devices.
Still, is there a way to use fastboot on this device?
samsung galaxy note 4 (snapdragon and exynos) won't have fastboot mode, sorry.