Database Users

adb device unauthorized

Hey, I'm on A2017U stock B19 bootloader unlocked,
I want to backup my stock recovery and boot using axon7tool (I want to flash twrp after that),
When I type: "adb devices" I get my device number and next to it: "unauthorized",
And when I type "adb reboot edl" I get: "error: device unauthorized."
USB debugging enabled.
What am I missing?
(also when I try to go to edl mode (vol up + vol down + power) nothing happens...)
Thanks

I think u need to be root in order to backup those files using adb and you have to have the bootloader unlocked in order to root even tho theres a thread showing how to root without bootloader unlocked

Thanks,
My bootloader is unlocked...
Is there any other way to backup stock recovery and boot before flashing twrp?

Hello, do you have the proper drivers installed for the phone usb wise and in edl mode it won't do anything, that's normal.

Hi, Thanks,
I think so, as I say, it does recognize my phone number on "adb devices" , and I successfully unlocked my bootloader using fastboot

Can connect to phone via adb, but not Fastboot

I want to install TWRP and new roms on my X829 device. I can access the device through adb , but not fastboot
When i list adb devices the device is detected, but when i list devices in fastboot the device is not detected.
When I press adb boatloader reboot the device reboots.
Anyone experienced anything similar?

travelguy78 said:
I want to install TWRP and new roms on my X829 device. I can access the device through adb , but not fastboot
When i list adb devices the device is detected, but when i list devices in fastboot the device is not detected.
When I press adb boatloader reboot the device reboots.
Anyone experienced anything similar?
Click to expand...
Click to collapse
Its probably a driver problem on you PC install this: https://forum.xda-developers.com/showthread.php?t=2588979

Heyyo, just to double check you are using adb when in the ROM or recovery and fastboot when in bootloader?
So when in the ROM you would use... adb devices
When in bootloader you would use... fastboot devices
Or... fastboot flash recovery TWRP.img
I'd recommend following this guide for doing it all. Works good
https://forum.xda-developers.com/le-max-2/how-to/protocol-backup-stock-rom-flash-stock-t3517151

[Solved] Huawei P9 Lite Bricked

Hello, I was curious if anyone could help me with unbricking my phone, my phone has no custom recovery installed, the bootloader is apparently unlocked (OEM unlocking is disabled), FRP lock is enabled, I cannot flash anything (Command not allowed), relock bootloader (Root type is at risk), Unlock bootloader (Command not allowed), any help would be appreciated.
Edit: I also cannot boot a from a recovery img locally using fastboot (Command not allowed)
EDIT: Fixed it using DC Pheonix and flashing VNS-L22C636B140 OEMINFO and flashing B160

Hi, try my way. https://forum.xda-developers.com/showpost.php?p=77307223&postcount=30 Just pick CxxxBxxx that suits your model. Try to unlock bootloader again via SRKTool, I think FRP must be unlocked too...
Check this also: https://forum.xda-developers.com/huawei-p9lite/help/p9-lite-bricked-please-help-t3415275

4uvak91 said:
Hi, try my way. https://forum.xda-developers.com/showpost.php?p=77307223&postcount=30 Just pick CxxxBxxx that suits your model. Try to unlock bootloader again via SRKTool, I think FRP must be unlocked too...
Check this also: https://forum.xda-developers.com/huawei-p9lite/help/p9-lite-bricked-please-help-t3415275
Click to expand...
Click to collapse
I cannot flash anything, so any of these do not help, thanks for trying I guess

wheellzzz said:
I cannot flash anything, so any of these do not help, thanks for trying I guess
Click to expand...
Click to collapse
Are you sure you run from inside the folder where adb.exe and fastboot.exe is? Boot to bootloader and use terminal pointed to fastboot.exe. Shift+right click -> open command line here. Make sure your devices is listed: adb devices. If device is shown: adb reboot bootloader, to reboot to bootloader. If not, install adb drivers / huawei drivers.

4uvak91 said:
Are you sure you run from inside the folder where adb.exe and fastboot.exe is? Boot to bootloader and use terminal pointed to fastboot.exe. Shift+right click -> open command line here. Make sure your devices is listed: adb devices. If device is shown: adb reboot bootloader, to reboot to bootloader. If not, install adb drivers / huawei drivers.
Click to expand...
Click to collapse
Yes I am sure, also, I have no way to access ADB since there is no recovery on the phone.
Only thing I can do is boot to that eRecovery screen with the option to download, reboot or shutdown. (Automatticly goes to here), or boot to bootloader

wheellzzz said:
Yes I am sure, also, I have no way to access ADB since there is no recovery on the phone.
Only thing I can do is boot to that eRecovery screen with the option to download, reboot or shutdown. (Automatticly goes to here), or boot to bootloader
Click to expand...
Click to collapse
Well if you can access to bootloader then you able to use fastboot commands. ADB is not related to recovery anyhow, you use windows command prompt to use adb and fastboot. IF FRP is locked, unlock bootloader again. I quiet don't understand how the command are not allowed or so. You are definitely doing something wrong.

4uvak91 said:
Well if you can access to bootloader then you able to use fastboot commands. ADB is not related to recovery anyhow, you use windows command prompt to use adb and fastboot. IF FRP is locked, unlock bootloader again. I quiet don't understand how the command are not allowed or so. You are definitely doing something wrong.
Click to expand...
Click to collapse
The problem is I cannot unlock bootloader again, flash anything or boot into any image in fastboot mode, I always get "ERROR: (Command not allowed)", attempting to relock the bootloader shows "ERROR: (Root type is at risk)"
EDIT: I have done some research for the dload method, If I want to dload to hopefully fix it, I'll need VNS-L22C636B381, but the official link from the hicloud is dead, if anyone could help me with that, that'd be great.
Last EDIT: Ended up scratching the above idea as it didn't work, gritted my teeth as I bought DC Phoenix and will update if it works out with the .APP from the latest package I found on firmware finder.

Fastboot doesn't detect my phone, please help

I want to install LineageOS so I closely followed the fastboot and adb instructions on the official site. During my first (failed) attempt, there were some old Google USB and ADB things on my PC, so I deleted everything and started again with a clean slate.
I managed to make ADB work (adb devices detects my device, could authenticate the computer, all seems good there). But if I start the phone in fastboot mode, connect and run fastboot devices, I get nothing back. It doesn't give any sign of the connected device. Windows's "Devices" window lists a device called "Android", but it's under "Unspecified" and has the yellow triangle/exclamation mark on the icon.
1. Am I right to assume that this will stop me from unlocking the bootloader (if I will use the unofficial method) and flashing TWRP and a custom ROM on the device?
2. More importantly: What could be wrong, how can I make fastboot see my phone?
Many thanks for the suggestions!

hi,
first do you have latest ADB and Fastboot
then connect your device and run adb devices. check if it detect the device means from the command prompt run "adb reboot bootloader" (without quotes)
now once after device reboots to bootloader check fastboot devices it will detect now
if not then goto device manager,right click on the device and click on update driver software and choose android fastboot interface
you are done now run fatboot devices,it will detect the device

Solved!
adbdriver com/downloads/

No fastboot option on Oneplus 8 Pro - can't unlock bootloader

I have a brand new Oneplus 8 Pro from China with global ROM installed.
I wanted to unlock the bootloader however there is no fastboot option in the boot menu.
There is Start, Restart Bootloader, Recovery and Turn Off.
The Fastboot option is missing.
I can connect the phone to my PC, adb recognizes the phone, but Fastboot is missing.
Any ideas?

Docomoco said:
I have a brand new Oneplus 8 Pro from China with global ROM installed.
I wanted to unlock the bootloader however there is no fastboot option in the boot menu.
There is Start, Restart Bootloader, Recovery and Turn Off.
The Fastboot option is missing.
I can connect the phone to my PC, adb recognizes the phone, but Fastboot is missing.
Any ideas?
Click to expand...
Click to collapse
Sure. You are allready in that mode. Just type fastboot devices and check..

I did that but no response.
The cursor jumps to the next line but there is no response from the phone.
If I type adb devices the phone is listed but the fastboot command doesn't return anything.

Docomoco said:
I have a brand new Oneplus 8 Pro from China with global ROM installed.
I wanted to unlock the bootloader however there is no fastboot option in the boot menu.
There is Start, Restart Bootloader, Recovery and Turn Off.
The Fastboot option is missing.
I can connect the phone to my PC, adb recognizes the phone, but Fastboot is missing.
Any ideas?
Click to expand...
Click to collapse
Restart to bootloader, then fastboot should work. If your phone is still on, and you can access adb, you should also be able to type adb reboot bootloader

Thanks.
So apparently the command "fastboot devices" returns nothing.
However I was able to unlock the bootloader just by entering "adb reboot bootloader" then
"fastboot oem unlock".
What confused me was that there is no "fastboot" option on the phone itself as there was on my Oneplus 5t.

Docomoco said:
Thanks.
So apparently the command "fastboot devices" returns nothing.
However I was able to unlock the bootloader just by entering "adb reboot bootloader" then
"fastboot oem unlock".
What confused me was that there is no "fastboot" option on the phone itself as there was on my Oneplus 5t.
Click to expand...
Click to collapse
The option in the power menu is called bootloader (fastboot only will work there) the hint was in the adb command I gave you, adb reboot BOOTLOADER. Not sure why they changed what the menu was called but I'm glad you got it sorted. To give you a short summary, adb will only work when your phone is powered on and booted into android, or if you have recovery mode open and on the adb section, and fastboot only works in the bootloader hope that could help!
Edit: fastboot devices should work but only in bootloader mode, not when your phone is started normally

Docomoco said:
I have a brand new Oneplus 8 Pro from China with global ROM installed.
I wanted to unlock the bootloader however there is no fastboot option in the boot menu.
There is Start, Restart Bootloader, Recovery and Turn Off.
The Fastboot option is missing.
I can connect the phone to my PC, adb recognizes the phone, but Fastboot is missing.
Any ideas?
Click to expand...
Click to collapse
You have to insert a SIM card, boot of the device and make a phone call to get it to register your device. Wait a few minutes and then restart your phone. Go into settings under about phone and enable developer options. Back out and go into developer options and you will see OEM unlock. You need to turn that on and USB debugging. Both of them must be turned on. Now you can boot into fastboot and unlock your bootloader. It will wipe the device so if you have any data you want to save you better do it now.

hey i am having this issue, i am able to adb reboot bootloader but when i try to oem unlock or anything else, it is just waiting for device and not finding it....

SourPower said:
hey i am having this issue, i am able to adb reboot bootloader but when i try to oem unlock or anything else, it is just waiting for device and not finding it....
Click to expand...
Click to collapse
That's a driver issue.
Are you using Windows 7? If so use 10
If not then sort out your driver's and it'll be fine.
Theres a bug in 7 where the driver for ADB cannot be collaborated with fastboot drivers.

dladz said:
That's a driver issue.
Are you using Windows 7? If so use 10
If not then sort out your driver's and it'll be fine.
Theres a bug in 7 where the driver for ADB cannot be collaborated with fastboot drivers.
Click to expand...
Click to collapse
thanks for the reply, i am on windows 10 and i dont know what is causing the issue when the phone goes in fastboot, but i went on my wife's laptop and got it working within a few minutes after installing adb...

Having similar problem here:
win10x64, drivers installed, USB debugging is enabled.
ADB sees the devices, reboots it correctly with "adb reboot bootloader"
then bootloader menu's shown:
START // RESTART BOOTLOADER // RECOVERY MODE // SHOW BARCODE // POWER OFF
Fastboot mode
Product_name - kona
Variant - SM8 UFS
BOOTLOADER VERSION - (nothing appears here)
BASEBAND VERSION - (nothing appears here)
Serial number - (appears 8-symbol sn)
SECURE BOOT - YES
DEVICE STATE - LOCKED
trying to communicate with smartphone via terminal "fastboot" command doesn't do much:"fastboot devices" doesn't return anything at all, "fastboot oem unlock" just shows <waiting for device>
tried to reinstall drivers

tema_ka said:
Having similar problem here:
win10x64, drivers installed, USB debugging is enabled.
ADB sees the devices, reboots it correctly with "adb reboot bootloader"
then bootloader menu's shown:
START // RESTART BOOTLOADER // RECOVERY MODE // SHOW BARCODE // POWER OFF
Fastboot mode
Product_name - kona
Variant - SM8 UFS
BOOTLOADER VERSION - (nothing appears here)
BASEBAND VERSION - (nothing appears here)
Serial number - (appears 8-symbol sn)
SECURE BOOT - YES
DEVICE STATE - LOCKED
trying to communicate with smartphone via terminal "fastboot" command doesn't do much:"fastboot devices" doesn't return anything at all, "fastboot oem unlock" just shows <waiting for device>
tried to reinstall drivers
Click to expand...
Click to collapse
If you type fastboot reboot what happens? If nothing then either you're device doesn't have usb debugging on, could be the cable/usb slot (some people have had issues with this)
Or its the driver installed for fastboot.
Show hidden devices in device manager you may have multiple devices, remove them all and start over.
Your also need to have used ADB and have trusted the device (prompt will appear on your phone the first time you connect it successfully whilst in your phones system, not fastboot)

for windows 10:
firstly download the google adb driver:
Get the Google USB Driver | Android Studio | Android Developers
The Google USB Driver is required to perform adb debugging on Windows with Google devices.
developer.android.com
then do the following:
1. adb devices [you should see your device ] > adb reboot bootloader
2. device manager > update driver > chose from list [android device]
3. still in device manager got the newly populated Android device and then update driver > choose adb interface
3. fastboot oem unlock
etc.
hope this helps

i have similar problem
then bootloader menu's shown:
START // RESTART BOOTLOADER // RECOVERY MODE // SHOW BARCODE // POWER OFF
Fastboot mode
Product_name - kona
Variant - SM8 UFS
BOOTLOADER VERSION - (nothing appears here)
BASEBAND VERSION - (nothing appears here)
Serial number - (appears 8-symbol sn)
SECURE BOOT - YES
DEVICE STATE - LOCKED
i reached till fastboot. fastboot oem unlock is not working because SECURE BOOT - Yes.
any help will be highly appreciated

shweta007 said:
i have similar problem
then bootloader menu's shown:
START // RESTART BOOTLOADER // RECOVERY MODE // SHOW BARCODE // POWER OFF
Fastboot mode
Product_name - kona
Variant - SM8 UFS
BOOTLOADER VERSION - (nothing appears here)
BASEBAND VERSION - (nothing appears here)
Serial number - (appears 8-symbol sn)
SECURE BOOT - YES
DEVICE STATE - LOCKED
i reached till fastboot. fastboot oem unlock is not working because SECURE BOOT - Yes.
any help will be highly appreciated
Click to expand...
Click to collapse
Secure Boot means your Bootloader is locked.
Setup fastboot correctly, open a cmd window, navigate to fastboot.exe and enter fastboot oem unlock, follow instructions on phone screen