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So my Nexus6p randomly restarted once (I had been on 7.0 since release date with no issues) and since then is stuck in bootloop on the Google Logo.
Holding the Power+Volume Down boots into bootloader. From there I can't get to recovery or even tried the factory reset from there and it always gets stuck on the Google Logo.
I have downloaded the SDK and while fastboot works, adb doesn't.
I can't flash anything through fastboot because boot loader is locked. I can't unlock the booatloader because remote oem unlock is disabled. I have never had the need to root or unlock bootloader, so never had USB debugging or allowing unlock checked under debugging tools.
Can't sideload OTAs since adb doesn't work.
Do I have any options to recover the device and make it work again?
kumarshah said:
So my Nexus6p randomly restarted once (I had been on 7.0 since release date with no issues) and since then is stuck in bootloop on the Google Logo.
Holding the Power+Volume Down boots into bootloader. From there I can't get to recovery or even tried the factory reset from there and it always gets stuck on the Google Logo.
I have downloaded the SDK and while fastboot works, adb doesn't.
I can't flash anything through fastboot because boot loader is locked. I can't unlock the booatloader because remote oem unlock is disabled. I have never had the need to root or unlock bootloader, so never had USB debugging or allowing unlock checked under debugging tools.
Can't sideload OTAs since adb doesn't work.
Do I have any options to recover the device and make it work again?
Click to expand...
Click to collapse
Do you just have stock recovery? If so, can you boot directly into it with power + vol up. If so, maybe try hitting stock recovery menu to side load ADB or factory reset? Otherwise, sounds pretty borked unfortunately.
Sent from my Nexus 6P using Tapatalk
Hi all,
I've wanted to go back to Stock OS but when i type "fastboot oem lock" it says "FAILED <remote: Flashing Lock is not allowed."
Everything boots normally to OS 4.5.2. In DEV options the Unlock Bootloader is greyed out and says bootloader is already unlocked.
What can i do?
Cheers
These instructions did work for me with the OnePlus 3/3T. They should also work for the OnePlus5, just make sure that you download the OnePlus5 version of the software and recovery.
https://forums.oneplus.net/threads/...-3-3t-and-go-back-completely-to-stock.456232/
Use this link for the stock recovery: https://forum.xda-developers.com/showpost.php?p=72748921&postcount=5
reayard said:
These instructions did work for me with the OnePlus 3/3T. They should also work for the OnePlus5, just make sure that you download the OnePlus5 version of the software and recovery.
https://forums.oneplus.net/threads/...-3-3t-and-go-back-completely-to-stock.456232/
Use this link for the stock recovery: https://forum.xda-developers.com/showpost.php?p=72748921&postcount=5
Click to expand...
Click to collapse
Hi i tried but does the same when i get to fastboot oem lock (it says Flashing Lock is not allowed).
r1card0amr said:
Hi i tried but does the same when i get to fastboot oem lock (it says Flashing Lock is not allowed).
Click to expand...
Click to collapse
Thanks I asked the same question earlier glad u tried it..I want to make sure we can relock it before I get the phone. Did u enable oem unlocking in the developer options before doing a fastboot oem lock? Also, make sure you are on stock everything including recovery..
mohan_kr said:
Thanks I asked the same question earlier glad u tried it..I want to make sure we can relock it before I get the phone. Did u enable oem unlocking in the developer options before doing a fastboot oem lock? Also, make sure you are on stock everything including recovery..
Click to expand...
Click to collapse
Hello. I first thing I do always is to install drivers. I start by connecting the phone to the laptop in charge mode, then in transfer files mode, MTP or camera. In this way he will recognise all the drivers your laptop needs.
Also I enter in fastboot mode and recovery so the laptop can recognise the drivers and always reboot laptop and phone just to double check.
What I did was: go to Developer Options and enabled Unlock Bootloader and USB Debugging.
Then I accepted the laptop request on my phone and all drives were OK.
I run CMD and typed fastboot devices to see if it recognises my phone and it displayed a serial number. So I proceed next to type fastboot oem unlock and the process went OK and on my phone it asked Yes or No to unlock and I choose yes.
Then I flash a twrp image by typing on CMD: fastboot flash recovery recovery.img (my twrp I'm had other name so I rename it. You need to enable "Show file extensions" in Windows so you can see what the extension is).
I then type fastboot boot recovery.img and the phone entered in Recovery Mode in this case TWRP.
My phone was always connected to the laptop and he open the internal storage window so I drag the supersu inside.
Then on TWRP I wiped dalvik and cache and I went to Install and installed the SupeSU on my internal memory root.
The phone then rebooted and ready to go.
But then I went to developer options and the Unlock bootloader was greyed out. I unroot my phone and flashed a stock recovery for OP5 and the stock image 4.5.2 and when I type fastboot oem lock it always says it can't be flashed.
I need to stock it since I'm giving to a family member and they don't understand much about phones and If there's a problem the warranty doesn't cover.
Just installed supersu to try an app. I never install 3rd party roms.
r1card0amr said:
I need to stock it since I'm giving to a family member and they don't understand much about phones and If there's a problem the warranty doesn't cover.
Click to expand...
Click to collapse
the warranty is not voided with unlocked bootloader..
https://oneplus.net/hk/support/answer/will-rooting-or-unlocking-the-bootloader-void-my-warranty
I found now that if i take pictures or screenshots the Album Folder is empty. I think my phone is bricked. Hence i can't lock the bootloader.
r1card0amr said:
I found now that if i take pictures or screenshots the Album Folder is empty. I think my phone is bricked. Hence i can't lock the bootloader.
Click to expand...
Click to collapse
if your phones boots its not bricked... My guess is that you data is corrupted, i would wipe everything including userdata en reflashing the stock with recovery.
Hogyoku said:
if your phones boots its not bricked... My guess is that you data is corrupted, i would wipe everything including userdata en reflashing the stock with recovery.
Click to expand...
Click to collapse
Hi right before your comment i managed lol.
I re-flash the stock recovery and in recovery i reset and wipe everything. then i install the OS4.5.3 by ADB Sideload and it's working now.
Just wanted to get rid of the inital warning that my bootloader is unlocked. I want to lock again.
I rooted my device with Magisk, and now I want to restore it to factory state.
I flashed stock recovery and OOS several times, wiped everything but fastboot oem lock failed all times (FAILED (remote: Flashing Lock is not allowed)).
Can you help me?
What should I do to relock bootloader?
here is your solution
r1card0amr said:
Hi right before your comment i managed lol.
I re-flash the stock recovery and in recovery i reset and wipe everything. then i install the OS4.5.3 by ADB Sideload and it's working now.
Just wanted to get rid of the inital warning that my bootloader is unlocked. I want to lock again.
Click to expand...
Click to collapse
here in this video u can see in detail how to lock bootloader. hope this help you
https://www.youtube.com/watch?v=CQYCSdDUdAU
HOW TO RELOCK..
Install TWRP and Magisk if you don't have them yet.
Magisk should allow you to slide "OEM unlocking" to "enabled"
Reboot to fastboot
Flash stock recovery via fastboot.
Run locking via fastboot flashing lock
Allow it to reboot and upon start up it will say device corrupted (THIS IS NORMAL)
Boot to recovery via the warning start screen.
Once in recovery, sideload latest FW.
Profit.
I usually do it this way (successfully):
Wipe everything but OTG in TWRP
Format data
Reboot to TWRP
Flash the full stock OOS zip
Reboot to fastboot
Flash stock recovery
Lock bootloader with the fastboot lock command
Has anyone made any progress with this? I too am having the issue as described and have tried the solution by Ricyksydhu, along with solutions from various other places around the net.
Hey guys, I've been trying to unlock my bootloader so that I can try and root my Maven 3 via Magisk. The problem is, I can't get into the bootloader. If I try to reboot to the bootloader from recovery mode, it just restarts like normal. Same thing when I try using adb commands in the cmd prompt. I am on Windows 7.
I think it could be unlocked trought EDL mode. But we need some expert help
I unlocked my phone with at&t but I think it only unlocked the SIM.
I enabled usb debugging and oem unlock, but when I issue the command (in ubuntu term)
adb reboot bootloader
Click to expand...
Click to collapse
is just boots into the android system.
Any clue on what to do?
I have the same question - bootloader mode will not load when I issue "adb reboot bootloader", nor will it go into bootloader when I go into recovery mode (via POWER + VOLUME UP) and then I choose the "Bootloader" option. The phone just boots into the system. When I use "adb reboot recovery" it does go into recovery mode, and I am able to get a shell and copy files via adb just fine. I am using the latest platform-tools.
This is a ZTE Z835 (Maven 3), AT&T, carrier unlocked phone.
I don't think there is a bootloader... I have not found any fastboot-compatible mode on this device nor have I heard anyone else find one. You have FTM mode (Power + Volume Down) and EDL mode (adb reboot edl). EDL mode lets it work with QFIL, and with QFIL, you can literally dump and modify any partition on the device you want... I'm not sure what else you want. There's a new method for unlocking the bootloader https://www.xda-developers.com/unlock-bootloader-zte-phones/. I found that my devinfo partition was already unlocked, but you may need to check. I'm going to try and figure out how to create a recovery.bin partition able to be flashed in QFIL.
Hello sir,
Recently my internal storage got almost full ,it flashed repeated warnings that "some system functions may go wrong,please freeup some space".I just did not paid much attention to it and proceeded to download a file when my internal storage level was less than 100 mb and then suddenly my phone got switched off.when I tried to switch it on it got stuck in the middle with Android one logo .please help me to solve this problem as I don't to lose my data.
Hi Rakesh,
Is you issue get resolved?
I have also got warnings of internal storage full in my MI-A1 and after that my phone got switched off. I also tried to switched on and it got stuck at android one logo.
Please help me out if your issue get resolved?
Try booting in TWRP and using the file manager to delete some user data to make space.
barrack1 said:
Try booting in TWRP and using the file manager to delete some user data to make space.
Click to expand...
Click to collapse
Hi,
Could you please elaborate more as how to do that?
How to boot in TWRP and how to use file manager as i cannot access phone for file manager to delete some user data?
Note--i can't enable OEM unlocking and ADB debugging in Developer Options as cant access phone.
saurabhsh23 said:
Hi,
Could you please elaborate more as how to do that?
How to boot in TWRP and how to use file manager as i cannot access phone for file manager to delete some user data?
Note--i can't enable OEM unlocking and ADB debugging in Developer Options as cant access phone.
Click to expand...
Click to collapse
Can you use fastboot (volume down+power)? If you don't have Android SDK, then install Minimal ADB and Fastboot, open cmd in that directory and type "fastboot device" (or "fastboot devices"?) while phone is connected via USB in fastboot mode. If it displays your phone's serial number, then you can use fastboot. If it doesn't show you anything, then I think wiping your phone in recovery or performing a clean flash through Mi Flash is the only way. However, if you can use fastboot, then the next step would be booting into TWRP... but we'll get to that once you confirm if it's working or not.
manpildo said:
Can you use fastboot (volume down+power)? If you don't have Android SDK, then install Minimal ADB and Fastboot, open cmd in that directory and type "fastboot device" (or "fastboot devices"?) while phone is connected via USB in fastboot mode. If it displays your phone's serial number, then you can use fastboot. If it doesn't show you anything, then I think wiping your phone in recovery or performing a clean flash through Mi Flash is the only way. However, if you can use fastboot, then the next step would be booting into TWRP... but we'll get to that once you confirm if it's working or not.
Click to expand...
Click to collapse
Hi,
i have checked by typing command---fastboot reboot and my phone reboots and hangs at android one screen so that means i can use fastboot but strangely didnt see in fastboot devices but i found output for fastboot oem device-info where device unlocked shows false and other status.
If this is enough for using fastboot to boot into TWRP?
saurabhsh23 said:
Hi,
i have checked by typing command---fastboot reboot and my phone reboots and hangs at android one screen so that means i can use fastboot but strangely didnt see in fastboot devices but i found output for fastboot oem device-info where device unlocked shows false and other status.
If this is enough for using fastboot to boot into TWRP?
Click to expand...
Click to collapse
Actually bad news is that to boot into TWRP you need to unlock your bootloader first (fastboot oem unlock), but to do that I think you need to have enabled "OEM unlocking" in developer settings (though strangely I am unlocked, but for me this option is disabled). Try unlocking anyway. If it doesn't work, then I would follow this guide to clean flash official firmware with Mi Flash Tool. Be warned, you will lose all your data if you manage to unlock your device.
manpildo said:
Actually bad news is that to boot into TWRP you need to unlock your bootloader first (fastboot oem unlock), but to do that I think you need to have enabled "OEM unlocking" in developer settings (though strangely I am unlocked, but for me this option is disabled). Try unlocking anyway. If it doesn't work, then I would follow this guide to clean flash official firmware with Mi Flash Tool. Be warned, you will lose all your data if you manage to unlock your device.
Click to expand...
Click to collapse
Hi,
Is that mean i will still loose all data even if i unlock bootloader?
And i am unable to unlock bootloader by command. So only option i have now to do factoryreset/wipe data?
So after factory reset again i need to flash the ROM ? Because if again i need to flash ROM, i understand the prerequisite is Bootloader unlock which will create issue again.
Please suggest.
saurabhsh23 said:
Hi,
Is that mean i will still loose all data even if i unlock bootloader?
Click to expand...
Click to collapse
Yes, unlocking bootloader wipes data.
saurabhsh23 said:
Hi,
Is that mean i will still loose all data even if i unlock bootloader?
And i am unable to unlock bootloader by command. So only option i have now to do factoryreset/wipe data?
So after factory reset again i need to flash the ROM ? Because if again i need to flash ROM, i understand the prerequisite is Bootloader unlock which will create issue again.
Please suggest.
Click to expand...
Click to collapse
No, if you wipe your phone through recovery you won't need to flash anything. It just deletes all your stuff without touching the system.
Hi! SaurabhSh23!
Just gone through your post and i am stuck in the same situation of infinite android Logo appearing on screen. with only thing that can be done is FASTBOOT Mode, Tried ADB & Fastboot but OEM Bootloader is LOCKED and cannot be unlocked using cmd.
Did You find any solution to the problem without losing any personal DATA?? please Help me out i am having some precious personal data and I am very confused about how to get that back.
Regards,
Vaibhav, New Delhi. 9953749713
Any update here please?
vaibhav08 said:
Hi! SaurabhSh23!
Just gone through your post and i am stuck in the same situation of infinite android Logo appearing on screen. with only thing that can be done is FASTBOOT Mode, Tried ADB & Fastboot but OEM Bootloader is LOCKED and cannot be unlocked using cmd.
Did You find any solution to the problem without losing any personal DATA?? please Help me out i am having some precious personal data and I am very confused about how to get that back.
Regards,
Vaibhav, New Delhi. 9953749713
Click to expand...
Click to collapse
Guys pls help me i got stuck on boot logo i want to flash stock rom pls help me
I'm in the same boat. Unable to access developer options as phone won't boot and its stuck at the android one logo.
Fastboot oem unlock gives error Flashing Unlock is not allowed.
Is there anyway around this?
I'm still stuck with my Mi A2. I didn't enable OEM unlock or USB debugging and now i'm stuck on android one logo with only option is to boot into fast-boot mode. All commands and tools i try I get error stating unlock is not allowed in Lock State.
I bit the bullet and ordered an EDL cable so we'll see if i get anywhere with that. I've read that newer Xiaomi devices wont work with EDL cable and only option is to use the test point method....not sure how accurate that is but guess i'll find out whenever the cable gets here.
Face_11 said:
I'm still stuck with my Mi A2. I didn't enable OEM unlock or USB debugging and now i'm stuck on android one logo with only option is to boot into fast-boot mode. All commands and tools i try I get error stating unlock is not allowed in Lock State.
I bit the bullet and ordered an EDL cable so we'll see if i get anywhere with that. I've read that newer Xiaomi devices wont work with EDL cable and only option is to use the test point method....not sure how accurate that is but guess i'll find out whenever the cable gets here.
Click to expand...
Click to collapse
What if you type fastboot oem unlock?
https://forum.xda-developers.com/mi-a1/how-to/discussion-bypass-wipe-oem-unlock-t3804406 use this tutorial to avoid data loss during unlocking
jack_21 said:
What if you type fastboot oem unlock?
https://forum.xda-developers.com/mi-a1/how-to/discussion-bypass-wipe-oem-unlock-t3804406 use this tutorial to avoid data loss during unlocking
Click to expand...
Click to collapse
If i try and using Fastboot OEM Unlock i get the following:
C:\Tools\platform-tools>fastboot.exe oem unlock
FAILED (remote: 'Flashing Unlock is not allowed
')
Finished. Total time: 0.008s
Face_11 said:
If i try and using Fastboot OEM Unlock i get the following:
C:\Tools\platform-tools>fastboot.exe oem unlock
FAILED (remote: 'Flashing Unlock is not allowed
')
Finished. Total time: 0.008s
Click to expand...
Click to collapse
You can try fastboot oem edl
To put the phone in EDL mode without specific cable
However why not wipe data from the recovery?
Just use fastboot reboot recovery
jack_21 said:
You can try fastboot oem edl
To put the phone in EDL mode without specific cable
However why not wipe data from the recovery?
Just use fastboot reboot recovery
Click to expand...
Click to collapse
Thanks for the suggestions. I know when I ran fastboot oem edl previously I get message stating device already locked.
If i do fastboot reboot recovery i got an error ..i believe not allowed but will have to check later tonight.
Face_11 said:
Thanks for the suggestions. I know when I ran fastboot oem edl previously I get message stating device already locked.
If i do fastboot reboot recovery i got an error ..i believe not allowed but will have to check later tonight.
Click to expand...
Click to collapse
If you see a triangle, you are in recovery mode
You need to press a button combination to see options, Search on Google for that
Currently, I am trying to unlock bootloader using adb.
I installed adb and fastboot and checked everything until the CMD shows my device correctly.
And right after I type
"adb reboot bootloader"
my tablet just restart and does not go into the bootloader mode.
I also tried it manually, by pressing home+up+power button, but it also perform restart and no bootloader mode.
Does anyone knows why?
I checked all the settings in developer mode and cannot figure out why.
rnfkrha88 said:
Currently, I am trying to unlock bootloader using adb.
I installed adb and fastboot and checked everything until the CMD shows my device correctly.
And right after I type
"adb reboot bootloader"
my tablet just restart and does not go into the bootloader mode.
I also tried it manually, by pressing home+up+power button, but it also perform restart and no bootloader mode.
Does anyone knows why?
I checked all the settings in developer mode and cannot figure out why.
Click to expand...
Click to collapse
You can't unlock the bootloader with adb only with fastboot which doesn't work on Samsung. To unlock the bootloader on Samsung you have to enable OEM unlocking in developer options. Also Samsung doesn't have bootloader mode but instead they have Download mode which you can use tools like Odin or SmartSwitch to flash files. To get into Download mode use the command adb reboot download or use the button combination power + volumn down + home.