ADB Device Unauthorized - G4 Q&A, Help & Troubleshooting

Hey fellow members,
Since a few days my ADB is not working with my phone. Every time I try to connect it as an ADB device I get an error (See attachment) that my device is unauthorized.
I've read a dozen threads about this problem and I think it is the RSA Fingerprint. I don't get that pop-up anymore, when connecting my device to authorize the PC.
Here's what I've tried already
1.
Code:
adb kill-server
Code:
adb start-server
2. disable and enable USB-Debugging-Mode
3. Copy the adb key from C://user/me/.android. to the phone's directory /data/misc/adb
4. reinstall drivers on PC
5. Reboot PC and Phone
None of that worked. None. I'm desperate. Been looking for 6 hours yesterday and couldn't fix it.
If anybody has had these kinda problems I would be totally grateful for an answer.
I have the intl version of H815, bootloader unlocked, TWRP and SuperUser working fine. I'm currently on V20C (6.0 Marshmallow)
Any help would be extremely nice.
Best regards

Hi,
Did you solves this as I am having the same problem after doing a factory reset?
Cheers
Follow_and_Feel said:
Hey fellow members,
Since a few days my ADB is not working with my phone. Every time I try to connect it as an ADB device I get an error (See attachment) that my device is unauthorized.
I've read a dozen threads about this problem and I think it is the RSA Fingerprint. I don't get that pop-up anymore, when connecting my device to authorize the PC.
Here's what I've tried already
1.
Code:
adb kill-server
Code:
adb start-server
2. disable and enable USB-Debugging-Mode
3. Copy the adb key from C://user/me/.android. to the phone's directory /data/misc/adb
4. reinstall drivers on PC
5. Reboot PC and Phone
None of that worked. None. I'm desperate. Been looking for 6 hours yesterday and couldn't fix it.
If anybody has had these kinda problems I would be totally grateful for an answer.
I have the intl version of H815, bootloader unlocked, TWRP and SuperUser working fine. I'm currently on V20C (6.0 Marshmallow)
Any help would be extremely nice.
Best regards
Click to expand...
Click to collapse

pinn___________ said:
Hi,
Did you solves this as I am having the same problem after doing a factory reset?
Cheers
Click to expand...
Click to collapse
Unfortunately no. I've really tried everything. I even flashed a complete new kdz (at least upgraded to one), to no avail.
And this thread doesn't get enough recognition or any advice from a pro, so I'm heading dead ends.
I'll let you know, when I found a possible solution and post it in this thread.
Cheers

Hi,not a solution as such but I wanted adb to get into the bootloader. Instead I installed a terminal emu and got into it that way. Not sure what you are trying to achieve but this may be of some help.

Same problem for me... Device unauthorized, no rsa prompt... Tried it factory fresh, no success.

pinn___________ said:
Hi,not a solution as such but I wanted adb to get into the bootloader. Instead I installed a terminal emu and got into it that way. Not sure what you are trying to achieve but this may be of some help.
Click to expand...
Click to collapse
I want to access my device via ADB, e.g. pushing files to my phone, installing, wiping, etc.
Which I can't, since my computer, or my device is unauthorized to do so.
I just can't enter ADB commands, which is pretty annoying, since I often use it to push files to my phone or print out a logcat.
Well nothing's working so I gotta be patient until anybody comes up with a solution :good:

The strange thing is, i do also own an oneplus 2. It doesn't get authorized too, but is asking for fingerprint. Do you have win10, like me?

Trinaaa said:
The strange thing is, i do also own an oneplus 2. It doesn't get authorized too, but is asking for fingerprint. Do you have win10, like me?
Click to expand...
Click to collapse
Yes I have win 10. You're one step further than me. I don't even get an RSA prompt. Don't know why yet

Follow_and_Feel said:
Yes I have win 10. You're one step further than me. I don't even get an RSA prompt. Don't know why yet
Click to expand...
Click to collapse
Refer the below thread, hope this helps
http://stackoverflow.com/questions/23081263/adb-android-device-unauthorized/25546300#25546300
EXPERT FROM THE ABOVE LINK:-
I was not getting the RSA fingerprint pop up on my phone.
I had to go into the C:\Users\.android\adbkey and adbkey.pub
files, delete those and then do kill and restart of adb server. I had to stop and restart the debugger and connecting as USB in PTP mode.
Because the RSA authorisation key was getting stored in this path, killing and restarting the adb server didn't help.

Just wanted to reiterate the person above me as it helped me with my problem. So in case anyone out there on the internets runs into the same issues try these instructions.
1. boot your phone into recovery
2. now try doing adb devices in your command prompt - it should show up as LGH815xxxxxx recovery
3. type adb shell
4. type cd /data/misc/adb
5. type rm adb_keys -- this will delete any existing adb key from your device **
6. type exit to leave the shell and then reboot your device as normal
7. in windows find C:\Users\<your username>\.android
8. delete the existing adbkey.pub file
now you can proceed as normal with running adb devices, and you phone will prompt you to confirm.
** note you can also delete the adb key from android from within your android OS. go to settings > developer options > revoke USB debugging authorizations. i guess you can do it from recovery just to make sure.

Related

[Q] Factory Reset Narfed su

I did a "factory reset", this seems to have been a poor choice.
After the reset, I could still get onto the device via wireless adb, but su would return "permission denied". Today there was an automatic system upgrade, now I've lost the ability to connect to it via wireless adb or adb over USB.
Any hints would be wonderful.
vbrtrmn said:
I did a "factory reset", this seems to have been a poor choice.
After the reset, I could still get onto the device via wireless adb, but su would return "permission denied". Today there was an automatic system upgrade, now I've lost the ability to connect to it via wireless adb or adb over USB.
Any hints would be wonderful.
Click to expand...
Click to collapse
I don't know too much about adb, but I'll try to help
does your ADB detect the OUYA when you do "adb devices" when plugged in?
Either way, my advice would be to delete the OUYA drivers from your computer and reinstall them from scratch and then follow the steps to get adb working as if it never was. I haven't tried my adb since todays update, but I also don't use it for any reason.
I just turned on my console and have come to the conclusion that the automatic update broke su. How, i'm not sure, but it would seem that possibly you'll have to restart the process from scratch, redo adb and reload su.
lets just hope this isn't a sign that all future automatic updates will break su.
*EDIT* So it would seem that there is problems with the drivers. I have gotten ADB to work once again by deleting all the OUYA drivers from my computer and following the steps found at https://devs.ouya.tv/developers/docs/setup HOWEVER this presents a problem in that the system is only recognized as a adb device and has a broken MTP driver (whatever that is, maybe someone else will know). Maybe this is how it's supposed to be, I don't know, I don't remember seeing anything like that the first time.
After getting ADB back, I got SU back by running through the steps found here: http://forum.xda-developers.com/showthread.php?t=2272266 under how to install busybox, superuser, and su binaries. You should only have to go from step 1 to 4 on that one (only 4 if you still have the files on your computer).
I will note that the steps to get ADB on that second link did NOT work this second time. I'm not sure what this is due to. I'll be starting a new thread with this info, too.
JLCollier2005 said:
does your ADB detect the OUYA when you do "adb devices" when plugged in?
Click to expand...
Click to collapse
Nope.
JLCollier2005 said:
Either way, my advice would be to delete the OUYA drivers from your computer and reinstall them from scratch and then follow the steps to get adb working as if it never was. I haven't tried my adb since todays update, but I also don't use it for any reason.
[/QUOTE[
No drivers, running OSX & Linux.
Click to expand...
Click to collapse
Hard boot the OUYA and laptop, adb via USB seems to work again.
So far every OTA has removed su.
Sent from my GT-P3113 using Tapatalk 4 Beta

[Q] no usb-adb, no wireless adb, no su

Hey Guys,
as the title says, I can't connect to my OUYA anymore.
What have I done?
Set up adb and sdk descripted here
https://devs.ouya.tv/developers/docs/setup
Set up wireless adb, busybox, superuser, and su binaries descripted here
http://forum.xda-developers.com/showthread.php?t=2272266
Everything worked fine so far.
Then I rebooted the OUYA. From now on the device manager didn't found the OUYA anymore. If I switch USB-debugging off, its found as 'portable device'. If I switch USB-debugging on, it disappears and there is no other new item.
OUYA factory reset
This didn't helped anything. But with this step I lost SU.
So, as i read, USB-ADB is shut down on OUYA as soon as you enable wireless-ADB. A terrible 'feature', whatever. Now I can't modify the build.prop to take out the "service.adb.tcp.port=5555" line.
I managed to get into the recovery mode (by connecting a keyboard and pressing alt+print+i multiple times, then home) , but that's pretty helpless if adb can't find the ouya.
Has anybody an idea how I can get adb working properly again? Any ways are good, flashing a new rom, getting su, factory reset, anything =D
JackBackstack said:
Hey Guys,
as the title says, I can't connect to my OUYA anymore.
What have I done?
Set up adb and sdk descripted here
https://devs.ouya.tv/developers/docs/setup
Set up wireless adb, busybox, superuser, and su binaries descripted here
http://forum.xda-developers.com/showthread.php?t=2272266
Everything worked fine so far.
Then I rebooted the OUYA. From now on the device manager didn't found the OUYA anymore. If I switch USB-debugging off, its found as 'portable device'. If I switch USB-debugging on, it disappears and there is no other new item.
OUYA factory reset
This didn't helped anything. But with this step I lost SU.
So, as i read, USB-ADB is shut down on OUYA as soon as you enable wireless-ADB. A terrible 'feature', whatever. Now I can't modify the build.prop to take out the "service.adb.tcp.port=5555" line.
I managed to get into the recovery mode (by connecting a keyboard and pressing alt+print+i multiple times, then home) , but that's pretty helpless if adb can't find the ouya.
Has anybody an idea how I can get adb working properly again? Any ways are good, flashing a new rom, getting su, factory reset, anything =D
Click to expand...
Click to collapse
If you can get into recovery, just copy over the latest OTA file onto a usb stick, wipe Data/cache then flash the OTA.
Also for windows, not doing " echo 0x2836 >> "%USERPROFILE%\.android\adb_usb.ini" " can sometimes make it not be found on its own, was originally required to do it for ADB
In recovery mode, the only way is to flash the OTA via ADB. There is no option like from usb-stick or internal/external sd-card.
and my adb_usb.ini seems to be correct.
But thanks for your suggestions (=
I had the same issues. I'm waiting on a replacement. http://forums.ouya.tv/discussion/comment/13562
JackBackstack said:
Hey Guys,
as the title says, I can't connect to my OUYA anymore.
What have I done?
Set up adb and sdk descripted here
https://devs.ouya.tv/developers/docs/setup
Set up wireless adb, busybox, superuser, and su binaries descripted here
http://forum.xda-developers.com/showthread.php?t=2272266
Everything worked fine so far.
Then I rebooted the OUYA. From now on the device manager didn't found the OUYA anymore. If I switch USB-debugging off, its found as 'portable device'. If I switch USB-debugging on, it disappears and there is no other new item.
OUYA factory reset
This didn't helped anything. But with this step I lost SU.
So, as i read, USB-ADB is shut down on OUYA as soon as you enable wireless-ADB. A terrible 'feature', whatever. Now I can't modify the build.prop to take out the "service.adb.tcp.port=5555" line.
I managed to get into the recovery mode (by connecting a keyboard and pressing alt+print+i multiple times, then home) , but that's pretty helpless if adb can't find the ouya.
Has anybody an idea how I can get adb working properly again? Any ways are good, flashing a new rom, getting su, factory reset, anything =D
Click to expand...
Click to collapse
I haven't messed with root/cwm, since there really isn't much brick protection... you might try 'adb reboot recovery' during bootup... if you can force it to fastboot, you can boot the recovery image, and it should have adb with su access, you should be able to repair you mistakes from there, or just do a data/cache reset to wipe the device.
EDIT: assuming you can get to fastboot somehow, you would just have to 'fastboot boot recovery.img' where recovery.img is the build of cwm.
EDIT 2: try booting with a usb keyboard, during boot, you might be able to spam the kernel with the key combination alt-SysRq-i. This may force it to boot into recovery... Then you should be able to either use regular ADB, maybe push a OTA.zip via ADB, and ultimately install a OTA... Hope some of this is helping, I have no real hands on practice with much of ADB on this specific device... But I'm a LONG time android tinkerer.
EDIT 3: If you're able to get it to crash and boot into recovery via Alt-SysRq-i . It's a recovery based on 4.x as it should be... and you should be able to 'adb sideload OTA.zip'... Sorry for all these edits, I just keep realizing I have more to say.
Here's the link for the apk(down page a bit) to enable disable wireless adb allowing USB adb:
http://forum.xda-developers.com/showthread.php?t=961466
Sent from my Galaxy Nexus using xda app-developers app
HaYNigloo said:
Here's the link for the apk(down page a bit) to enable disable wireless adb allowing USB adb:
http://forum.xda-developers.com/showthread.php?t=961466
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
Will that require root?
Yes, since it's right inline with installing su, busybox, and supersuer using ADB. With the option to go ADB wireless, this is a necessity if you'll be installing CWM.
HaYNigloo said:
Yes, since it's right inline with installing su, busybox, and supersuer using ADB. With the option to go ADB wireless, this is a necessity if you'll be installing CWM.
Click to expand...
Click to collapse
Yeah that's what sucks. I followed a post on here and thought I had the unit rooted but either I messed it up or the OTA updates wiped it out. Since I no longer have adb access I cannot get root to enable wireless adb access. Snake eating its own tale
Oh! I believe there are wireless adb apps that don't require root. Try looking into the play store to find out which ones.
Edit 1: The Play Store has a wireless ADB app by Sherdle [ADB Wireless (no-root)]which doesn't require root!
Sent from my Galaxy Nexus using xda app-developers app
Hi everyone,
Actually I'm stuck the exact same way and I'm wondering if beowolfschaefer and JackBackstack have found a solution to get ADB work over TCPIP.
Thanks guys.
KrelianGS said:
Hi everyone,
Actually I'm stuck the exact same way and I'm wondering if beowolfschaefer and JackBackstack have found a solution to get ADB work over TCPIP.
Thanks guys.
Click to expand...
Click to collapse
I'm missing something. I have read this a couple times but cant figure out what is happening.
Is your Ouya not booting up at all?
If it boots can you do an
adb connect xxx.xxx.xxx.xxx and then adb shell to get a shell?
HT123 said:
I'm missing something. I have read this a couple times but cant figure out what is happening.
Is your Ouya not booting up at all?
If it boots can you do an
adb connect xxx.xxx.xxx.xxx and then adb shell to get a shell?
Click to expand...
Click to collapse
The Ouya is booting perfectly and wifi-ADB is enable. Problem is I can't connect to it anymore.
I already tried adb connect 192.168.xxx.xxx but i get a "device not found" error. It's the good IP (check on the Ouya and on my router with the MAC Adress)
It might be a port probleme. I tried both 5037(default) and 5555.
By the way, in the settings, should I switch USB-Debugging on or off ? Or it doesn't matter ?
KrelianGS said:
The Ouya is booting perfectly and wifi-ADB is enable. Problem is I can't connect to it anymore.
I already tried adb connect 192.168.xxx.xxx but i get a "device not found" error. It's the good IP (check on the Ouya and on my router with the MAC Adress)
It might be a port probleme. I tried both 5037(default) and 5555.
By the way, in the settings, should I switch USB-Debugging on or off ? Or it doesn't matter ?
Click to expand...
Click to collapse
I am pretty sure USB debugging needs to be on for ADB to accept connections. make sure it is on

[Q] HTC One X Driver for Android 4.2.2

Hi Guys
Do a require a specific driver for the new 4.2.2 system. I have updated my phone to run Cyanogenmod 10.1 and had some issues originally getting adb etc to identify the phone. I have since got past this and now get an unauthorised error in adb. This is normal the issue im having is that my phone does not prompt me when I connect it to my PC. I should be getting a whitelist prompt to confirm I authorise the Pc to run ADB commands.
Has anyone else had this rather than the expected whitelist prompt im getting the little android bloke asking do I want to copy files via usb. Im just trying to work out what I need to do to get my phone to prompt me when I connect via ADB. I have already enabled ROOT access to Apps and ADB, Enabled USB debugging etc
Any help would be appreciated I have tried a number of drivers but only ever get asked to copy file via usb.
Appsdroid said:
Hi Guys
Do a require a specific driver for the new 4.2.2 system. I have updated my phone to run Cyanogenmod 10.1 and had some issues originally getting adb etc to identify the phone. I have since got past this and now get an unauthorised error in adb. This is normal the issue im having is that my phone does not prompt me when I connect it to my PC. I should be getting a whitelist prompt to confirm I authorise the Pc to run ADB commands.
Has anyone else had this rather than the expected whitelist prompt im getting the little android bloke asking do I want to copy files via usb. Im just trying to work out what I need to do to get my phone to prompt me when I connect via ADB. I have already enabled ROOT access to Apps and ADB, Enabled USB debugging etc
Any help would be appreciated I have tried a number of drivers but only ever get asked to copy file via usb.
Click to expand...
Click to collapse
Do you have HTC Sync Manager?
Also, in Device manager does your Drivers have Errors (Yellow Triangle)?
Wilks3y said:
Do you have HTC Sync Manager?
Also, in Device manager does your Drivers have Errors (Yellow Triangle)?
Click to expand...
Click to collapse
Hi Mate
I have tried with HTC Sync on and again after uninstalling it both result in the same issue usb prompt rather than ADB fingerprint prompt. No in Device Manager both of the connections for the device identify and install correctly. One with the phone and another stating something like Android Interface device not on my PC at the mo to confirm the exact name but its something like
My HTC
Android Interface Device or possibly android ADB interface
Appsdroid said:
Hi Mate
I have tried with HTC Sync on and again after uninstalling it both result in the same issue usb prompt rather than ADB fingerprint prompt. No in Device Manager both of the connections for the device identify and install correctly. One with the phone and another stating something like Android Interface device not on my PC at the mo to confirm the exact name but its something like
My HTC
Android Interface Device or possibly android ADB interface
Click to expand...
Click to collapse
Hmm Very strange.
Try:
http://forum.xda-developers.com/showthread.php?t=2217396
Or if not try hasoons Root Toolkit, im sure that installs some drivers too. Hasoons got my ADB working.
Finally, to find ADB device, are you opening command prompt in Platform-tools folder?
Wilks3y said:
Hmm Very strange.
Try:
http://forum.xda-developers.com/showthread.php?t=2217396
Or if not try hasoons Root Toolkit, im sure that installs some drivers too. Hasoons got my ADB working.
Finally, to find ADB device, are you opening command prompt in Platform-tools folder?
Click to expand...
Click to collapse
Nice one cheers mate will try these drivers when I get home later. I was originally using Hasoons toolkit which is what flashed the recovery and new rom but once I updated to 4.2.2 the toolkit stopped. It was coming up as device offline. I have managed to get it working by overwritting the old ADB and fastboot files with the new ones for 4.2.2. The ones the toolkit comes with is 4.1 so was erroring as it didnt know to carry out the fingerprint check.
Yes mate I have tried various methods I have accessed the android\android-sdk\platform-tools folder and run ADB from there this identifies the phone but states its not authorised. I tried using the toolkit with the new ADB and fastboot but get the same.
Im just missing the ADB prompt on my phone for usb debugging just cant for the life of me identify why im getting the copy files from usb prompt rather than the adb fingerprint prompt. Im sure its drivers so am hopeful the ones on the link will fix it. Fingers crossed
I was having issues with adb not finding my device. These drivers worked for me...
crshd said:
I was having issues with adb not finding my device. These drivers worked for me...
Click to expand...
Click to collapse
Nice one mate will try these ones when I get in to on way home now hopeful one of the driver links sorts out the prompt for me will update later thanks guys
Sent from my HTC One X using xda app-developers app
Cheers All removed all drivers for htc one x then downloaded the 4.2 versions from the link
http://forum.xda-developers.com/show....php?t=2217396
once reinstalled adb gave unauthorised error again but then put the prompt up on the phone. So possible the 4.2 contains the info for requesting permission as i havent changed anything other than the drivers adb and fastboot have been the same since i started. Anyway cheers all
confusion about installing driver
crshd said:
I was having issues with adb not finding my device. These drivers worked for me...
Click to expand...
Click to collapse
bro i download your driver but how to install it. my htc one x just start in fastboot mode. i want to unlock bootloader but without adb i am helpless
If you have Windows 7,8,8.1 just enable automatic update and let windows install correct drivers
Sent from my HTC One X using Tapatalk 2

[Q] Driver install problem w/ Mac

I'm having some trouble and I think it might be related to drivers. I'm on Mac OSX 10.8.5 so I downloaded the LGUnitedMobile_Mac_Driver_Ver_4.22 from here:
http://www.andromods.com/download-files/latest-lg-g4-drivers-usb-adb-win-mac.html
I installed, restarted computer. When I plug in the G4 via USB I don't get the popup requesting ADB access. (I've got USB debugging on in Developer Options and it shows as on in Developer Options as well as a notification in the pulldown menu). If I tap on the notification from the pulldown for MTP options I'm asked if I want to install the drivers. So, I do that too and wait for it to complete. Still no ADB popup. If I open the Debloater tool, no welcome popup and the "device connected" light is red.
I tried toggling between MTP and PTP and still nothing. Tried unauthorizing my computer in Developer Options, unplugging, and waiting. Tried restarting phone.
Further, if I open Android File Transfer I get a message "No Android device found" whereas before trying to install the driver it found the G4 just fine. Ran the uninstall script from the LG driver software and Android File Transfer then CAN see the phone.
Any ideas? Any help would be appreciated - I'm trying to run the Debloater tool (which can't see the G4 either no matter what I try).
creaky said:
I'm having some trouble and I think it might be related to drivers. I'm on Mac OSX 10.8.5 so I downloaded the LGUnitedMobile_Mac_Driver_Ver_4.22 from here:
http://www.andromods.com/download-files/latest-lg-g4-drivers-usb-adb-win-mac.html
I installed, restarted computer. When I plug in the G4 via USB I don't get the popup requesting ADB access. (I've got USB debugging on in Developer Options and it shows as on in Developer Options as well as a notification in the pulldown menu). If I tap on the notification from the pulldown for MTP options I'm asked if I want to install the drivers. So, I do that too and wait for it to complete. Still no ADB popup. If I open the Debloater tool, no welcome popup and the "device connected" light is red.
I tried toggling between MTP and PTP and still nothing. Tried unauthorizing my computer in Developer Options, unplugging, and waiting. Tried restarting phone.
Further, if I open Android File Transfer I get a message "No Android device found" whereas before trying to install the driver it found the G4 just fine. Ran the uninstall script from the LG driver software and Android File Transfer then CAN see the phone.
Any ideas? Any help would be appreciated - I'm trying to run the Debloater tool (which can't see the G4 either no matter what I try).
Click to expand...
Click to collapse
You won't get the adb popup until you run an adb command in terminal. for example adb devices command is what triggered my popup.
uly609 said:
You won't get the adb popup until you run an adb command in terminal. for example adb devices command is what triggered my popup.
Click to expand...
Click to collapse
Thanks for the response. Tried that (typed adb devices in Terminal) and got this: -bash: adb: command not found
Not sure what I'm doing wrong here.
Do you have installed the android sdk?
creaky said:
Thanks for the response. Tried that (typed adb devices in Terminal) and got this: -bash: adb: command not found
Not sure what I'm doing wrong here.
Click to expand...
Click to collapse
If I remember correctly you need to download the android sdk and install the sdk and platform tools. When you do this make sure you make a folder on your desktop and name it whatever you want, and when you install the sdk make sure the install path goes to the folder you made. Then open a terminal window and navigate to the folder you installed the sdk to.
Then run the adb command, but it will be slightly different:
./adb devices
uly609 said:
You won't get the adb popup until you run an adb command in terminal. for example adb devices command is what triggered my popup.
Click to expand...
Click to collapse
wadamean said:
Do you have installed the android sdk?
Click to expand...
Click to collapse
I had to reinstall - that was the problem. Thanks!
uly609 said:
If I remember correctly you need to download the android sdk and install the sdk and platform tools. When you do this make sure you make a folder on your desktop and name it whatever you want, and when you install the sdk make sure the install path goes to the folder you made. Then open a terminal window and navigate to the folder you installed the sdk to.
Then run the adb command, but it will be slightly different:
./adb devices
Click to expand...
Click to collapse
Thanks again for the help. Problem solved.
Hey so then you were able to root using your mac? what variant g4 do you have? Could you please message me what steps you did to get successful root? i would really really appreciate it. its very rare to find mac users.
wadamean said:
Hey so then you were able to root using your mac? what variant g4 do you have? Could you please message me what steps you did to get successful root? i would really really appreciate it. its very rare to find mac users.
Click to expand...
Click to collapse
Not root, used Debloater tool to block updates. Would love to see a Mac root method released.
oh i see then. i will keep patiently waiting for a simpler root method. this one is already but for sure there has always been even more simpler methods surfaced.

Is adb bugs on model SMJ200G (j2) common?

I investigated the ADB program. At How to Install ADB on Windows, macOS, and Linux, I am stuck at step 7 of the instructions for windows. I do not receive any kind of pop up in my SMJ200G phone (j2).
This step:
7. On your phone’s screen, you should see a prompt to allow or deny USB Debugging access. Naturally, you will want to grant USB Debugging access when prompted (and tap the always allow check box if you never want to see that prompt again).
Click to expand...
Click to collapse
Perhaps my PC's connection to the phone is buggy, not the cable, but the software? by software I mean Windows/PC not my phone.
btw does file AdbWinUsbApi.dll need to be installed?
Are the following applicable for a official device that have never been rooted:
NVCore said:
-Missing ADB Confirmation Dialog(can be bypass by placing adb_keys(from PC/Laptop that has platform-tools and the file name is adbkey.pub, rename it to adb_keys) move the file to device (/data/misc/adb)
Click to expand...
Click to collapse
mbalino said:
Unable to detect the phone -win nor Lin
Hello guys
Something really extrange is happening.
My j2 prime -532G- can't be detected by Windows nor Linux.
The usb is working because it charges the phone, but I can't access the phone at all. I checked all the drivers in Win -google/adb and samsung- and in Linux libmtp/heimdall/etc.
I have tryed different usb -not the original one since i lost it-
Even when i start the download mode, nothing happens.
it there a way to root the phone without a PC? i have tryed also kingroot apk but it is useless.
Thanks
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