[Completed] Frustrated. ADB Device unauthorized. No solutions work - XDA Assist

Hello xda-members,
I've been searching for 4 hours now and every time I try to use ADB along with my device I get the "unauthorized" message and can't use it.
I've been searching for answers all across the internet and tried nearly everything I could find, e.g.:
1. In windows cmd:
Code:
adb kill-server
Code:
abd start-server
2. Unplug phone
3. Reinstall drivers
4. Reboot phone / PC
5. Disable and Enable USB-Debugging-Mode
I read in several threads on other sites, that the adb key is the problem (there's no "authorization"-pop-up appearing on my phone, when connecting it via usb, furthermore I can't revoke debug permissions in developer settings), so I tried also:
1. delete .android. folder on my PC (C://User/me/.android.)
2. Copy the adb_key file to my phone (/data/misc/adb)
None of that worked. None.
I'm really desperate since I need ADB for several important reasons (to me important). I don't know when this problem occured first. When I bought the phone ADB worked fine. I don't know what to do anymore.
Technical information:
- Windows 10 PC
- Latest LG drivers, latest adb version
Phone:
- LG G4 H815 V20C (Marshmallow)
- Rooted, TWRP installed, SuperSU working without problems
So please, if anybody out there has had the same problems help me!!!

Follow_and_Feel said:
Hello xda-members,
I've been searching for 4 hours now and every time I try to use ADB along with my device I get the "unauthorized" message and can't use it.
I've been searching for answers all across the internet and tried nearly everything I could find, e.g.:
1. In windows cmd:
Code:
adb kill-server
Code:
abd start-server
2. Unplug phone
3. Reinstall drivers
4. Reboot phone / PC
5. Disable and Enable USB-Debugging-Mode
I read in several threads on other sites, that the adb key is the problem (there's no "authorization"-pop-up appearing on my phone, when connecting it via usb, furthermore I can't revoke debug permissions in developer settings), so I tried also:
1. delete .android. folder on my PC (C://User/me/.android.)
2. Copy the adb_key file to my phone (/data/misc/adb)
None of that worked. None.
I'm really desperate since I need ADB for several important reasons (to me important). I don't know when this problem occured first. When I bought the phone ADB worked fine. I don't know what to do anymore.
Technical information:
- Windows 10 PC
- Latest LG drivers, latest adb version
Phone:
- LG G4 H815 V20C (Marshmallow)
- Rooted, TWRP installed, SuperSU working without problems
So please, if anybody out there has had the same problems help me!!!
Click to expand...
Click to collapse
Greetings,
Please read the sticky threads for this forum. XDA Assist is for helping NEW members find their way, not a help desk for Senior members who should know where to ask for help.
Thread closed.

Related

[S-Off] and Device Offline for PJ831000

This was answered a little bit in the S-Off thread and I would like to post it for everyone that has the PJ8310000 device and they are running into device "offline" when using adb devices. This is for Windows 8 only. I had the same problem in OSX, but I believe the solution is the same. I cannot post in the thread in the developer section yet, that is why this is here.
First, if you can't see your device in your device manager, make sure you have the latest HTC Device drivers installed or install the latest version of HTC Sync. This is very important for Windows 8.
Second, you will need to download and install the latest Android SDK. Just "Download From Other Platforms" and choose the appropriate SDK installation. You will need to run the SDK Manager.exe to install the latest tools. Note: ADB and Fastboot have been moved from the "tools" folder to "platform-tools".
Make sure your phone is in debugging mode by going into the Developer Options and choosing "Android debugging."
Find your SDK installation and make sure you are under "platform-tools" folder. You can ctrl-shift-right click on that folder to open a command prompt at that folder location. Saves you time.
Type in the command prompt:
Code:
adb devices
Your device should be listed and probably says Offline. This is normal. Take a look at your phone, you should get a prompt on your phone asking you if you trust the device that is trying to connect to it (this should be your computer). Allow it.
Type in the command prompt:
Code:
adb devices
This time, your device should be listed with the word "device" instead of offline.
To restart the daemon, type the following separately:
Code:
adb kill-server
adb start-server
This is the best I can do for everyone and it solved my problems with no further issues. I am not an expert and this is the only solution that has worked for me.
Thanks, this worked for me.
I did this in Windows 7 SP1 no problem. All I had to so was get the latest Android SDK and replace all the adb/fastboot files I already had and it worked no problems.
If you get permission denied when doing the last "adb shell" command, get adbd insecure from the forums here and run debugging mode insecurely from there.
Sent from my One X using xda app-developers app
Desertman123 said:
If you get permission denied when doing the last "adb shell" command, get adbd insecure from the forums here and run debugging mode insecurely from there.
Click to expand...
Click to collapse
I had this problem because SU was only allowing apps in CM10.1 (4.2.1). I found the solution by enabling the Dev Options via multiple clicks on the Build number until dev options was enabled, then changed Root access to Apps adn ADB.
FYI for anyone else that gets lost like I was.
ok so i can s-off now?
yes get some, 9 steps to s0ff
Ponarona said:
ok so i can s-off now?
Click to expand...
Click to collapse
Yes, you can use the HTC One XL link in the S-Off thread with no issues. I made this to help people with Win8 and trying to get their phones to appear properly in their device manager and to list it under adb devices.
If you get device offline, my issue, I was running android 4.2.2 but had an outdated adb. Just update adb if you still have problems
I know this is exceedingly random, but if you run a mac and can't see your device in adb, and in the past you tried sharing your phone internet with your mac via usb try running this:
sudo kextunload /System/Library/Extensions/EasyTetherUSBEthernet.kext
./adb kill-server
I need to do that before every adb session.
I'd be amazed someone actually has those conditions, but hey, it might help someone.
Sent from my HTC One X using xda app-developers app

[TOOL] ADB Data Recovery (recover data from a phone with broken screen)

**UPDATE**
NEW VERSION
THIS RELIES ON ADB COMMANDS, SO IF YOU DO NOT HAVE USB DEBUGGING TURNED ON, OR A CUSTOM RECOVERY TO BOOT TO, THEN IT WILL NOT BE AS SIMPLE AS JUST RUNING THE PROGRAM.
Another user was having issues because he had an emulator installed, so I updated the file to give you the choice between an emulator, or device. I intend to update further to allow you to check for and select an individual device, that will come soon..
----------------------------------------------------------------------------------------------------------------
Recently my Galaxy s2's screen smashed, and, after replacing it with a GS4, i realized that many of my pictures were stuck on the internal sd card of the GS2. Being unable to turn on mass storage mode, I made a very simple tool that makes using adb pull a simple, painless process, even for the most computer illiterate of android users. Hope this helps if anyone needs it.
For anyone having issues...
If you had not previously activated USB Debugging, there are several steps you need to follow in order to enable ADB
SCREEN WORKING TOUCH BROKEN NO CUSTOM RECOVERY​first, if you can see your screen, and have access to an otg cable, plug a mouse in to the otg cable, and the otg cable into the phone. Use the mouse to enable USB debugging, or to transfer files.
HOW TO ENABLE USB DEBUGGING
SCREEN WORKING TOUCH BROKEN WITH CUSTOM RECOVERY​boot to your custom recovery ADB commands will work here. (usually hold vol- + pwr)
HOW TO BOOT TO RECOVERY
Once in custom recovery, connect the device to the PC.
open CMD and enter the following commands;
cd c:\android (this is your ADB path, c:\android is default)
adb devices
The result should be something like
List of devices attached
051a4dd5 recovery
^^this number will be different for you
if you get a result on ADB devices, then you can use the program
SCREEN BROKEN TOUCH BROKEN WITH CUSTOM RECOVERY​boot to your custom recovery ADB commands will work here. (usually hold vol- + pwr)
HOW TO BOOT TO RECOVERY
Once in custom recovery, connect the device to the PC.
open CMD and enter the following commands;
cd c:\android (this is your ADB path, c:\android is default)
adb devices
The result should be something like
List of devices attached
051a4dd5 recovery
^^this number will be different for you
if you get a result on ADB devices, then you can use the program
SCREEN BROKEN TOUCH BROKEN NO CUSTOM RECOVERY​now things get complicated...
*The following is paraphrased from this site
1. download the custom recovery image for your device. Copy the recovery image to a convenient location on your computer, preferably with a short path. We will be placing it on the C Drive directly (not in any folder) and using that in the next steps.
Note: The recovery image should have .img extension. If it is in a zip file, extract the .img file from it.
I recommend clockwork mod non touch from this page
2. Power your device off and reboot your device to FASTBOOT or DOWNLOAD MODE depending on which type of device you have.
(most devices are fastboot, SAMSUNG typically uses DOWNLOAD MODE)
how to boot to fastboot or download mode
[FASTBOOT]​3. Connect your device to your computer via USB and wait till you see the PC recognize the device
to check if your device is in fastboot and connected use CMD and enter the following commands;
cd c:\android (this is your ADB path, c:\android is default)
fastboot devices
you will see a list of connected devices. if not, something went wrong.
4. Launch Command Prompt and type the following commands;
cd c:\android (this is your ADB path, c:\android is default)
fastboot flash recovery c:\recovery.img
5. Wait for the process to finish.
6. Turn device off then boot to your custom recovery ADB commands will work here. (usually hold vol- + pwr)
HOW TO BOOT TO RECOVERY
Once in custom recovery, connect the device to the PC.
open CMD and enter the following commands;
cd c:\android (this is your ADB path, c:\android is default)
adb devices
The result should be something like
List of devices attached
051a4dd5 recovery
^^this number will be different for you
if you get a result on ADB devices, then you can use the program
[RECOVERY MODE (SAMSUNG)]​USE THE INSTRUCTIONS ON THIS PAGE
Once in custom recovery, connect the device to the PC.
open CMD and enter the following commands;
cd c:\android (this is your ADB path, c:\android is default)
adb devices
The result should be something like
List of devices attached
051a4dd5 recovery
^^this number will be different for you
if you get a result on ADB devices, then you can use the program
HOPEFULLY THIS HELPS. REMEMBER TO CHECK THE FORUM PAGE FOR YOUR DEVICE IF YOU RUN INTO ISSUES. THIS ISN'T ANYTHING THE MEMBERS OF XDA HAVEN'T DONE THOUSANDS OF TIMES OVER.
Don't forget to hit "Thanks"
i'll bump this thread for those who didn't see this amazing tool, this tool is really useful, thank you very much
Hi,
Sturggling to find the .adb file as my phone shows up as a "Portable Device" any ideas?
Cheers
Thank you!
I joined just to say thank you to FuzzyMeep Two. Thanks for an awesome tool! It worked better than advertised!
:good:
Thanks again!
-th3r3isnospoon
Question
Hi! Can I use that to restore data not from sdcard but from internal memory of the device? I was storing photos on device memory on my Asus TF300T and now its bricked. I need to restore these photos, my girlfriend has something like 1000 of them from her trip to Caracas. Its very important for her. I already managed to connect the device through fastboot and I launched anb in cmd. What should I do next? Please help me guys
koperkowy said:
Hi! Can I use that to restore data not from sdcard but from internal memory of the device? I was storing photos on device memory on my Asus TF300T and now its bricked. I need to restore these photos, my girlfriend has something like 1000 of them from her trip to Caracas. Its very important for her. I already managed to connect the device through fastboot and I launched anb in cmd. What should I do next? Please help me guys
Click to expand...
Click to collapse
Yes, when it references SD Card it means the internal "SD" storage built in to the phone, not the removable one. It should work as long as ADB can connect.
Sorry for taking so long to reply, i really hope you got your pictures back.
FuzzyMeep Two said:
Recently my Galaxy s2's screen smashed, and, after replacing it with a GS4, i realized that many of my pictures were stuck on the internal sd card of the GS2. Being unable to turn on mass storage mode, I made a very simple tool that makes using adb pull a simple, painless process, even for the most computer illiterate of android users. Hope this helps if anyone needs it.
P.S. I apologize if i have posted this in the wrong place, if so please let me know.
Click to expand...
Click to collapse
Really great stuff - so simple but so effective. Cheers and thanks.
Error msg
zobes said:
Really great stuff - so simple but so effective. Cheers and thanks.
Click to expand...
Click to collapse
When i run that tool, i get the error mesg: more than one device and emulator,
I dont want to uninstall the emulator coz it was a headache getting it running
How i procede to select the device to be used
alisdairjk said:
When i run that tool, i get the error mesg: more than one device and emulator,
I dont want to uninstall the emulator coz it was a headache getting it running
How i procede to select the device to be used
Click to expand...
Click to collapse
NEW VERSION
Try this, i haven't gotten to test it, so please let me know if it worked for you, I added the option of selecting an emulator or USB device, because of your post. Hopefully it helps.
When I try to run this I also get an error message saying that the adb.exe file cannot be found.
Please can anyone help?
Joeb29 said:
When I try to run this I also get an error message saying that the adb.exe file cannot be found.
Please can anyone help?
Click to expand...
Click to collapse
Have you also installed ADB, as well as this software?
I'm also having an issue - I have installed java, java SDK and ADB, so I can now run the data recovery tool. But when I do I'm getting "error:device not found" - am I missing drivers or something? I couldn't get all the way on the ADB configuration, because part of it required me to do something on the device... anyway, looks like the computer isn't recognising the the phone at the moment.
Any help very gratefully received (phone is Samsung Galaxy S2).
joffmeister said:
Have you also installed ADB, as well as this software?
I'm also having an issue - I have installed java, java SDK and ADB, so I can now run the data recovery tool. But when I do I'm getting "error:device not found" - am I missing drivers or something? I couldn't get all the way on the ADB configuration, because part of it required me to do something on the device... anyway, looks like the computer isn't recognising the the phone at the moment.
Any help very gratefully received (phone is Samsung Galaxy S2).
Click to expand...
Click to collapse
I have the same situation right now. Managed to make your program work then I get the "error:device not found". My phone does show up in the computer folder(albeit not in mass storage mode), but isn't that what this program was made to work around?
My phone is a LG Optimus G with a smashed glass... The LCD still displays fine, but I'm stuck at my swipe lock because the digitizer is dead.
Thank you for your help and your wonderful program.
Thanks for this app. My girlfriend broke her screen and digitizer on her Galaxy S4. She never turned USB Debugging mode and has a lock on her screen. When using your app I get the same error when I use adb by itself which is "error: closed". ADB detects my phone but any command I use in ADB or with your app I get that same error.
Do you know how to fix this? Thanks in advance.
Thanks a lot man.
dude this tool is just amazing and does exactly what it promised. I was spending sleepless nights thinking about how to recover my data from my broken galaxy nexus and now that I have it I can rest easy. Seriously can't thank you enough for this. Just joined xda to thank you buddy.:laugh::fingers-crossed:
Getting an error "The system cannot find the path specified."
I start the recovery tool, set eh adb path successfully, and then I get this error. If I try running the recovery to pull the DCIM library I get this:
"error: device not found"
What can I do?
Thanks!
Either way this is an amazing tool, seeing how it helped some people already. :good:
Hi, Seem to have the same problem as many others, Device not found. I cant change to MTP mode on my LG G2.
I hope someone can find a solution to this problem.
Program seems amazing doh.
Hello,
This is really a great tool ! I was wondering if you could add the possibility to recover the external sd card aswell.
Device not found
Tried to recover a Samsung Galaxy S3 mini with a broken screen
I installed adb and RecoverData, run it and then get a "device not found error"
What can I do?
Amazing app. thank you so much :good:
FuzzyMeep Two said:
**UPDATE**
NEW VERSION
Another user was having issues because he had an emulator installed, so I updated the file to give you the choice between an emulator, or device. I intend to update further to allow you to check for and select an individual device, that will come soon..
----------------------------------------------------------------------------------------------------------------
Recently my Galaxy s2's screen smashed, and, after replacing it with a GS4, i realized that many of my pictures were stuck on the internal sd card of the GS2. Being unable to turn on mass storage mode, I made a very simple tool that makes using adb pull a simple, painless process, even for the most computer illiterate of android users. Hope this helps if anyone needs it.
Don't forget to hit "Thanks"
Click to expand...
Click to collapse
Hi, Thank you very musch, It's so usefull for me.. :angel:

[Completed] How to fix adb (error:closed) and fastboot (waiting for device) in cmd

Hi!
Please help me...
My Infocus M210 is rooted and I've edited the build.prop from a build prop editor to speed up internet data connection but the editor goes wild and changes everything written on the build.prop then forced my phone to shut down and when I start my phone, it stuck at boot loop.
I've already wipe data/factory reset on its built-in Android system recovery <3e>.
but I think its the worst thing that I've done.
Coz I thougt it disabled debugging and removed root permission from my device.
I've used Apply update from ADB.
I tried to sideload stockrom.zip but when its completed sending on my phone, then says "installation aborted" I've tried different ROMs but same result.
I have also tried shell commands:
adb pull /system/build.prop
adb -d -e -s <serialNumber> shell am start options -D
but all shell commands doesn't work and says "error:closed"
So then I've tried Fastboot mode
but my devices wasn't found
so I have followed some threads and watched youtube tutorials:
So I removed drivers via "usbdeview"
Then installed Fastboot device/ Fastboot interface drivers manually.
but I almost tried all drivers from official to many google drivers
but still my device wasn't found in cmd
says "waiting for device"
Now I'm thinking if there are some tricks to fix adb "error:closed"
or try different computers for fastboot
I already used my Windows 7 64-bit from my friend
and Windows XP 32-bit from my friend
Please Help me... :crying:
Hello,
Welcome to XDA.
Try posting your question in the forum linked below.
http://forum.xda-developers.com/android/help
The experts there may be able to help. Good luck.

Galaxy S5 with broken screen, need help controlling it from PC

Hi, I've got an old S5 with a broken screen. There's no image going on and there's no indication that the touchscreen is working.
I'm not looking to recover data, I'm looking to play around with it by controlling it from my PC. Last I remember, the phone is running a Cyanogenmod OS (I don't think LineageOS was around at that time) with either TWRP or CWM recovery, but I'd bet on TWRP.
Now: the device reaches the OS properly, I can tell because if I try to turn the ringing sound up it gives me an audio feedback.
If I connect it to a PC from the OS:
- the phone shows up in Windows Explorer as "SM-G900F"
- Device Manager shows me a "SAMSUNG Mobile USB Composite Device" under Universal Serial Bus controllers
However I cannot access any files (Windows Explorer shows the device as empty), and if I attempt to 'adb devices' in the console it shows me an empty devices list.
Now, I suspect that USB debugging might be off. So I also tried connecting it to a PC from recovery and the exact same thing as above can be observed, PLUS:
- Device manager also shows me a "SAMSUNG Android Phone" list which can be expanded to show me one entry called "SAMSUNG Android ADB Interface"
However it's the same as before, no files available and 'adb devices' shows an empty list.
Now I heard that I can theoretically enable USB debugging through ADB, by writing to a config file. That would allow me to enable USB debugging and try something like Vysor in order to control the phone from my PC.
However that's a moot point until I can figure out why the ADB service on my PC isn't seeing the device. Any help would be greatly appreciated, and if you need more info I can provide it.
Extra info:
- I installed Samsung USB drivers at some point while trying to make it work
- Windows Explorer shows a phone icon for this device, and if I recall correctly that's what happens when it's connected through MTP (Mass Storage should show it like a memory card)
_sepiroth said:
Hi, I've got an old S5 with a broken screen..........
Click to expand...
Click to collapse
I've never experienced this situation myself but, I've seen that the following thread has worked for many individuals.
https://forum.xda-developers.com/showthread.php?t=2786395
Good Luck!
~~~~~~~~~~~~~~~
Unless asked to do so, PLEASE don't PM me regarding support. Sent using The ClaRetoX Forum App on my Apple Macintosh.
Ibuprophen said:
I've never experienced this situation myself but, I've seen that the following thread has worked for many individuals.
https://forum.xda-developers.com/showthread.php?t=2786395
Good Luck!
~~~~~~~~~~~~~~~
Unless asked to do so, PLEASE don't PM me regarding support. Sent using The ClaRetoX Forum App on my Apple Macintosh.
Click to expand...
Click to collapse
Thanks a bunch, that pointed me in the right direction with my research! I solved my issue, I can now control my phone from my PC.
By doing this I ran into a couple of problems, I'm going to describe them and their solutions:
Problem 1: couldn't ADB into the device when in Recovery Mode. That is because after a long head scratching session I came to the conclusion that I didn't have TWRP Recovery installed (I had Philz Touch CWM Recovery and LineageOS 14.1 instead).
Solution 1: ADB mode is enabled in TWRP by default. So I flashed the latest TWRP through Odin, ADB instantly started working afterwards in Recovery Mode.
Problem 2: USB Debugging was disabled inside the OS.
Solution 2: from the thread that Ibuprophen posted, you can enable USB debugging in your OS by opening an ADB shell into your device and modify the build.prop like so
Code:
Adb shell
echo "persist.service.adb.enable=1" >>/system/build.prop
echo "persist.service.debuggable=1" >>/system/build.prop
echo "persist.sys.usb.config=mass_storage,adb" >>/system/build.prop
reboot
Problem 3: /system was empty so there was no build.prop. If I attempted to create a build.prop file it wouldn't be saved after a device reboot, so USB debugging still didn't work.
Solution 3: it seems like TWRP doesn't mount /system by default, only /data. You can mount it manually through ADB like this:
Code:
mount -o rw /dev/block/bootdevice/by-name/system /system
I found this out from this stackexchange question: https://android.stackexchange.com/q...data-partitions-in-recovery-mode-in-adb-shell
Problem 4: When an app tries to use USB Debugging you need to allow it to do so from the phone. Since the screen was broken, I couldn't do this.
Solution 4: You'll need to push a public key to your device with ADB. Boot into Recovery Mode and make sure your device is recognized by your PC and type
Code:
adb push <path to adbkey.pub on your PC> /data/misc/adb/adb_keys
This solution is from: https://stackoverflow.com/questions...b-rsa-key-with-broken-touch-screen-on-android
This will make sure that you won't need to confirm debugging permissions for apps coming from your machine.
So for anyone who has a broken phone screen (my screen is dead and touchscreen/touch buttons are kaput too) and wishes to control their phone from their PC but USB debugging is disabled:
1. Boot device in TWRP Recovery (flash it if you don't have it)
2. ADB into the device
3. Make sure /system is mounted (if it's empty it means it's not mounted), else mount it manually like in Solution 3
4. Configure build.prop to have USB Debugging enabled like in Solution 2
5. Push your public key to the device like in Solution 4
6. Restart the phone (into its OS)
7. Download the Chrome extension called Vysor and launch it
8. Connect your phone through a USB cable
9. The device should appear in Vysor, connect to it and have fun controlling it
Note that if you just want to backup your files, steps 1 + 2 are sufficient. After making sure ADB works you can just 'adb pull' all your files which should be located in /sdcard. Google it, it's easy to find.
The same goes for backups, you can do them directly through ADB.
Again, thanks Ibuprophen!
Vysor does not work on all graphic cards. a good free alternative is scrcpy
btw instead of flashing twrp, you can flash a modified system partition with proper entries in build.prop (for those with no custom recovery available)
aIecxs said:
Vysor does not work on all graphic cards. a good free alternative is scrcpy
btw instead of flashing twrp, you can flash a modified system partition with proper entries in build.prop (for those with no custom recovery available)
Click to expand...
Click to collapse
Very well pointed out, thanks for this.

Really need some help installing ADB drivers on Windows 7

I'm really having a hard time getting ADB drivers to work on Windows 7 so that I can connect my Android phone to my computer to run some ADB commands. I've tried three different packages; I guess the latest ADB MSI installer and another couple various packages. And I can't get any devices to show up when I type ADB devices. I need something simple if somebody can help treat me like a newbie although I have some experience with Linux and the command prompt but I really need something dead simple that will just install ADB on my computer so I can run a command on my phone. Any help would be greatly appreciated.
Wjbell said:
I'm really having a hard time getting ADB drivers to work on Windows 7 so that I can connect my Android phone to my computer to run some ADB commands. I've tried three different packages; I guess the latest ADB MSI installer and another couple various packages. And I can't get any devices to show up when I type ADB devices. I need something simple if somebody can help treat me like a newbie although I have some experience with Linux and the command prompt but I really need something dead simple that will just install ADB on my computer so I can run a command on my phone. Any help would be greatly appreciated.
Click to expand...
Click to collapse
While plenty of people know adb better than I do, I can try to help you where we need to start at the beginning I think, which is to state that there is nothing to "install" on either Android or Windows, other than the one adb.exe executable on Windows.
However, you do need to enable a few options in Android settings.
With that, you can get Windows to talk to Android over adb as shown in my screenshots below, whether over USB or completely over Wi-Fi.
My first question to you to help you is to ask a basic question.
Q: Did you turn on USB debugging in Developer options?
A: ?​
Yes I have us debugging on on my Android phone. I've installed USB drivers before on an older phone to allow me to use my Android phone for an internet connection on my PC and it was pretty simple and word flawlessly.

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