Database Users

Bootloop With locked bootloader 7.0

My 6p is stuck in a bootloop. nbd90x build my bootloader is locked is there anyway to unlock from adb. I have already tried sideloading ndb90x through adb wipping chache and user data and still no luck. Help me Xda youre my only hope..

So you previously enabled USB debugging, how about OEM unlocking? If so, use 'fastboot flashing unlock' to unlock the bootloader. Note that internal storage will be completely wiped. Everything. Though with USB debugging enabled, you should be able to adb pull the contents of you SD card first. If you can unlock the bootloader you can try flashing factory images with fastboot. Otherwise, not much else besides RMA it with Google. There's been a few reports of stock N6Ps bootlooping. Haven't seen anyone post that Google denied the claim.

no bootloader is locked so cant flash using flashboot but debugging is enabled so I am able to use adb .

I know. What I'm asking is if you enabled allow OEM unlocking in developer settings? That doesn't unlock your bootloader in itself. You still need to use fastboot to do it. However if that setting IS enabled what you can do is... Use ADB to pull your internal storage to PC. Then use fastboot to unlock the bootloader and flash factory images. If the setting is not enabled, and wiping data and flashing an OTA don't work, I'm not sure what else can be done.
You can try downloading the 7.1 dev preview OTA and seeing if it updates whatever is causing it to fail. Other than those, RMA would be your best bet.
https://developer.android.com/preview/download.html#device-preview

After sideloading a ton of times between 7.0 and 7.1, one time i got it to boot up then i immediately enabled oem unlock then it crashed again... so now I am able to flash through fastboot although I havent been able to get it to boot again. Is it normal for bootloops to not get fixed by flashing?

Hijacking your post to report what is happening to me. I posted the same thing on the Android Beta program community on G+.
Have been using the latest beta since it came out on completely stock 6P (locked bootloader, unrooted). Everything working normally when yesterday around 10 or 11AM, phone starts to bootloop OUT OF NOWHERE, it was just sitting there on the table while I was working. I could still get to bootloader/recovery, so that was a bit of a relief. First thing I tried: clear cache, nothing. Then proceed to wipe/factory reset the device, to no avail. Immediately downloaded the latest factory image from Google's page, tried flashing it but couldn't since the bootloader was locked (OEM unlock option also disabled). Then downloaded the beta OTA and sideloaded it, process went through OK but device still bootloops. Tried sideloading the latest stable OTA but didn't work since it was from a previous build. Ran out of ideas. So there I was creating a thread on XDA for help while the device was still on its bootloop rush, about to hit the Submit button when again OUT OF THE BLUE SKY the device decides to boot itself back up. First thing I did was unlock the bootloader. Phone worked normally for 6 or 7 hours, when I'm doing something on it and then again, screen froze and bootloop starts again. This time I only reset the device and left the it bootlooping, after about 30 minutes it boots up again. I unenrolled from the beta and installed the latest 7.0 build. Everything working fine for the last 12 hours. Anyone have any idea on what can cause the device to bootloop like that? Never seen anything like it.

Yea I signed up for the beta program too do you have the link to unenroll? So you just reset and let it sit?

Here you go
google.com/android/beta

do you remember what you did to get it to boot?

noetre said:
do you remember what you did to get it to boot?
Click to expand...
Click to collapse
Well, that's the thing. Everything I tried didn't seem to work. I couldn't flash the factory image since the bootloader was locked. I was able to sideload the beta OTA but the device still bootlooped after that. So I just left it bootlooping and after around 20 or 30 minutes the device booted normally. I have no idea what caused it and what I did to make it work again.
P.S: device restarted 2 times while I was typing this.

noetre said:
do you remember what you did to get it to boot?
Click to expand...
Click to collapse
If your boot loader is locked you are screwed, sorry to say, I would RMA it. Unbelievable an update can mess a phone up...that's why I always unlock the bootloader first thing and never lock it. I need complete control of my phone.
Edit: Only thing I can think of is delete the partitions with fastboot or adb and reflash factory image.

boot loader is unlocked now Ive tried flashing using the flash-all script but the phone still wont boot

noetre said:
boot loader is unlocked now Ive tried flashing using the flash-all script but the phone still wont boot
Click to expand...
Click to collapse
As a last resort, flash all of the images manually with fastboot. This will wipe all userdata and completely format the SDcard. Nothing will be left. Extract the bootloader and radio images from the factory images zip. Flash them in fastboot. Reboot to fastboot again. Extract the next zip in the same folder as BL & radio images and flash the vendor, system, boot, recovery & userdata image files. Just for good measure, boot to recovery (stock Android recovery) and perform a factory reset & cache wipe. If the phone still fails to boot, your only option would be to RMA it at this point.
Note: As per Heisenberg's sticky thread, do NOT flash userdata.img if you have anything besides the 32gb model as you will only have the ~32gb storage available. If you're using a model with more storage, just use fastboot to format userdata but don't flash the image.

Ill try that.. but isnt the warranty voided because the bootloader is unlocked?

noetre said:
Ill try that.. but isnt the warranty voided because the bootloader is unlocked?
Click to expand...
Click to collapse
Not on a Nexus, no.
Added: I had to RMA mine after the phone got its first update. I unlocked the bootloader and stayed stock for a long time (until N came out). I took the OTA in About Phone and it applied with no problems but the phone would not boot. Factory images also couldn't get it running. Stock recovery and all. RMA'd without issues. I didn't tell them, just sent it in. If they tried to boot it they would've seen the unlock symbol. There's also a thread somewhere buried in the general section where someone called Google and asked and they confirmed to them that unlocking does not void warranty. I'll try to find it for you.
Found it: http://forum.xda-developers.com/nexus-6p/general/unlocking-bootloader-warranty-google-t3229804/page1
I also returned 4 faulty Nexus 5's (mostly screen artifacts) all unlocked with no problems.

Phone is locked with factory(?) password after relocking bootloader, no recovery mode

Hi guys, I tried flashing stock rom and re-locking the bootloader so that I could have the phone completely stock. However, after re-locking the bootloader, I seem to have bricked the phone. I've scoured the forum for fixes, tried tenfar's tool, and nothing has worked yet. Hopefully someone has come across this situation before and can advise me on how to get my phone working again.
So how I got to this point.
-Originally the phone was on stock rom, rooted, with official TWRP recovery.
-Booted into TWRP, wiped cache, dalvik, data.
-Flashed ZTE_A2017U.B29_MergeBootStack_by_DrakenFX.zip.
-Flashed ZTE_A2017U.B29_StockSystem_by_DrakenFX.zip.
-Rebooted phone, went through initial setup, then turned on Allow OEM Unlocking in Dev Options.
-Rebooted back into TWRP, used Minimal ADB to fastboot oem lock.
So the phone rebooted twice from there, and seemed like it was going to boot properly, but the first screen that appeared was a lock screen asking for the password. I didn't set any passwords, and couldn't find any default factory passwords even looking through the zteusa forums on posts for similar situations. Then I tried rebooting into the bootloader to factory reset the phone, but trying to boot into the bootloader only leads to a black screen after the ZTE boot logo. That's where I'm currently stuck. No matter what I try, be it tenfar's tool, I can't get into anything but the black screen or the password-locked screen.
Using tenfar's tool, after I issue the axon7root.exe -p 3 command, it shows the next two lines, up to Version 1.10, then does nothing else. I'm not sure if this is because I flashed B29, and the tool only goes up to B27.
Any advice would be greatly appreciated!

Tennear's tool for flashing a boot and recovery image seems the most promising I think, but I don't quite understand how to use it.

-Rebooted back into TWRP, used Minimal ADB to fastboot oem lock.
Click to expand...
Click to collapse
First, you shouldn't (can't?) relock the bootloader while you're using a custom recovery. Additionally, I don't think you can issue fastboot commands to recovery.
Boot into TWRP and do a factory reset from there.
If not, flash the ZTE B29 image either via stock recovery (flashed via TWRP/tenfar's tool), or edit the install script to make it flashable via TWRP.

Hard/soft brick

I think I messed up my PH-1 something royally.
All I was trying to do is unlock my bootloader and load Magisk.
To preface this, my PH-1 seemed to act a little wonky from the get-go. I bought it 3rd person from a guy on craigslist so anything warranty involved I think I'm out of luck.
The phone would take a while to power on, it took something like 10secs on the power button just to turn it on. And if I set it to reboot , it boots into the bootloader. Also, I was never able to access the recovery (even using power + up). It always felt like I had to hold the buttons for way to long to get to its destination; e.g. up and power to get into fastboot.
Ok where I'm at now. In can occasionally get into fastboot mostly after it bootlooping a few times. It won't get past the Essential logo if I try to boot it up.
PS I was able to unlock the bootloader.
Steps I took to remedy this:
> erase all user data in fastboot
> hold power + u + d to hard power off
> follow this guide https://forum.xda-developers.com/essential-phone/how-to/guide-rooting-essential-ph-1-magisk-t3701976
> attempt to install stock system image via flash-all
>a ton other
Here are the results of that.
https://imgur.com/a/iVwwS
Help me guys please. :crying:
A little progress, I was unable to unlock_critical but its still hanging here
https://imgur.com/a/IdZum

jAm-0 said:
I think I messed up my PH-1 something royally.
All I was trying to do is unlock my bootloader and load Magisk.
To preface this, my PH-1 seemed to act a little wonky from the get-go. I bought it 3rd person from a guy on craigslist so anything warranty involved I think I'm out of luck.
The phone would take a while to power on, it took something like 10secs on the power button just to turn it on. And if I set it to reboot , it boots into the bootloader. Also, I was never able to access the recovery (even using power + up). It always felt like I had to hold the buttons for way to long to get to its destination; e.g. up and power to get into fastboot.
Ok where I'm at now. In can occasionally get into fastboot mostly after it bootlooping a few times. It won't get past the Essential logo if I try to boot it up.
PS I was able to unlock the bootloader.
Steps I took to remedy this:
> erase all user data in fastboot
> hold power + u + d to hard power off
> follow this guide https://forum.xda-developers.com/essential-phone/how-to/guide-rooting-essential-ph-1-magisk-t3701976
> attempt to install stock system image via flash-all
>a ton other
Here are the results of that.
https://imgur.com/a/iVwwS
Help me guys please. :crying:
Click to expand...
Click to collapse
read through this and follow the steps should be good to go.
https://forum.xda-developers.com/essential-phone/development/stock-7-1-1-nmj20d-t3701681
This is also very helpful
https://mata.readthedocs.io/en/latest/

That's the exact process I was going through, and it finally booted up.
The issue I was having was a bad usb connection which wouldn't allow me to unlock_critical.
SOLVED. Still no Magisk, we'll worry about that another time. 5hrs of troubleshooting is enough for one night.

https://imgur.com/a/ZiBzp
SO close to getting Magisk to install, any reason the refuses to flash the boot partition? I used the stock boot.img and had Magisk patch it before I flashed

SO close to getting Magisk to install, any reason the refuses to flash the boot partition? I used the stock boot.img and had Magisk patch it before I flashed

jAm-0 said:
SO close to getting Magisk to install, any reason the refuses to flash the boot partition? I used the stock boot.img and had Magisk patch it before I flashed
Click to expand...
Click to collapse
You have to flash magisk in twrp recovery NOT bootloader mode.
It's right in the OP from the rooting guide you followed:
Do not set up a password if you are on 8.1 twrp doesn't work.
You need to read through that rooting guide and make sure you know what you're doing before you try.
This phone is easy to hard brick and there is no solution to recover from that.
OREO 8.0/8.1
REQUIREMENTS:
An unlocked bootloader.
A working ADB/Fastboot environment on your computer. Knowledge on how ADB and Fastboot works is also preferred.
The stock boot image for whatever build you're running/trying to root.
The latest TWRP build for our device.
If on 8.1, remove your pin/pattern/passcode until the root process is done.
1. Download both the stock boot image for whatever build you're running and the Magisk or SuperSU zip. Transfer both files to your device's internal storage.
2. Reboot your phone into the bootloader, then open up your command prompt or terminal and flash the latest TWRP build for the device using:
Code:
fastboot flash boot twrp.img
3. Once TWRP has finished flashing, reboot into your recovery. When prompted, enter your pattern/passcode/password to decrypt your data in order to gain access to your internal storage.
4. Once you're in TWRP, install the stock boot image and then the Magisk/SuperSU zip.
5. Whenever Magisk/SuperSU finishes installing, simply reboot your device! You should now be rooted.
*NOTE: TWRP will NOT remain installed on your device.

wolfu11 said:
You have to flash magisk in twrp recovery NOT bootloader mode.
It's right in the OP from the rooting guide you followed:
Do not set up a password if you are on 8.1 twrp doesn't work.
You need to read through that rooting guide and make sure you know what you're doing before you try.
This phone is easy to hard brick and there is no solution to recover from that.
OREO 8.0/8.1
REQUIREMENTS:
An unlocked bootloader.
A working ADB/Fastboot environment on your computer. Knowledge on how ADB and Fastboot works is also preferred.
The stock boot image for whatever build you're running/trying to root.
The latest TWRP build for our device.
If on 8.1, remove your pin/pattern/passcode until the root process is done.
1. Download both the stock boot image for whatever build you're running and the Magisk or SuperSU zip. Transfer both files to your device's internal storage.
2. Reboot your phone into the bootloader, then open up your command prompt or terminal and flash the latest TWRP build for the device using:
Code:
fastboot flash boot twrp.img
3. Once TWRP has finished flashing, reboot into your recovery. When prompted, enter your pattern/passcode/password to decrypt your data in order to gain access to your internal storage.
4. Once you're in TWRP, install the stock boot image and then the Magisk/SuperSU zip.
5. Whenever Magisk/SuperSU finishes installing, simply reboot your device! You should now be rooted.
*NOTE: TWRP will NOT remain installed on your device.
Click to expand...
Click to collapse
I realize all that, the issue is I cannot access any sort of recovery because I think my bootloader is defective.
For example from a cold restart if I press the power button for say 3 -5 seconds it wont boot, just boot to the Essential logo and loop. To get the phone to boot I have to hold the power down for 15-20 seconds while it bootloops a couple times then it'll boot.
Is there a possible way to reflash the bootloader software if it is defective? It's unlocked btw
There is a way to install magisk via fastboot with a patched_boot img which I'm working on. Cant seem to find the right boot img to patch for 8.1
PS Is it possible to flash .zips through fastboot? e.g. custom roms etc

Was finally able to get into recovery, so all is well. Thanks for the help yall

OP, what was your process to successfully get into recovery and fix your problems?
It may help others sometime?

gimpy1 said:
OP, what was your process to successfully get into recovery and fix your problems?
It may help others sometime?
Click to expand...
Click to collapse
It's really hard to say, my phone has a serious problem with it. sometimes I cant get it to boot, it will boot into the bootloader over and over and over. I've managed to get Lineage 15.1 on if for a bit until I tried to get back into the recovery which sent it manic.
I just got lucky I was able to get into TWRP and flash lineage.
my first issue not being able to flash the stock image via fastboot because I didn't unlock_critical which can sometimes fail when the usb connection is bad.
Currently flashing stock again if my phone will boot up. I'm not sure whats wrong with my bootloader but its causing a ton of havoc

My essential phone stuck in boot logo,bootloader work but recovery doesn´t work
Bootloader locked.
Oem unlocking disable.
Usb debugging disable.
How to flash stock recovery or twrp on bootloader locked ? please
Thank you!

katastyle971 said:
My essential phone stuck in boot logo,bootloader work but recovery doesn´t work
Bootloader locked.
Oem unlocking disable.
Usb debugging disable.
How to flash stock recovery or twrp on bootloader locked ? please
Thank you!
Click to expand...
Click to collapse
Same boat for me - just keep rebooting to show Powered by Android Screen and then reboot again and again. Was able to see my device using fastboot devices command but all attempts to access recory just repeat the bootloop entry. I would happily check the OEM UNLOCK option in dev settings but can't even get it to book to any OS to make that option happen. Still shows bootloader locked on bootloader screen - any help someone can suggest?

I had this problem tonight also. In my case I suspect it had to do with the install of magisk in which I checked both boxes and patched the bootloader. on reboot I was stuck on boot. Just wanted to add my solution. I got the pie back to stock zip here https://forum.xda-developers.com/essential-phone/development/stock-7-1-1-nmj20d-t3701681 then I put it into the adb folder and ran the flashall.bat script. I tried the no wipe one and it saved my information. very happy I didnt have to resetup my phone in the end.

katastyle971 said:
My essential phone stuck in boot logo,bootloader work but recovery doesn´t work
Bootloader locked.
Oem unlocking disable.
Usb debugging disable.
How to flash stock recovery or twrp on bootloader locked ? please
Thank you!
Click to expand...
Click to collapse
I am in the same boat. I tried to re-install the OS, but because my USB debugging was not enabled, Fastboot worked but ADB would not and since I basically wiped the recovery area, my phone will only boot into Fastboot but will not allow any loading of recovery. I would pay for someone to help. This is so hard to figure out. I have contacted Essential but since my phone is over 12 months old, the warranty has expired.
Help please. It seems like such a waste to have a bricked phone.

Need Help after Unexpected OTA Update

Carrier unlocked XT1687, bootloader unlocked and with rooted stock potter 25.137.35.
I never allowed the Motorola Security Update to load, I 'd been tapping "Maybe Later" for a week.
On Friday I noticed the "Maybe Later" option wasn't there, so I simply "backed-out".
Saturday morning, the update was shown as completed. WTH??
I did still have root (was able to use root permission apps) so I rebooted but it kept going into TWRP recovery.
Using "start" would allow the phone to boot normally.
I tried a few non-destructive things, no joy.
I finally reflashed the stock potter. As a phone it's working OK
But now..
adb and fastboot seem to function OK, but when I try reboot bootloader commands I get "bad boot" state.
I also noticed the OEM unlock in dev options is gray-out, it may have been that way after the bootloader unlock, I just never noticed?
When I boot into recovery, TWRP 3.2.x main screen just sits there no way past it.
I'm now in way over my head,
Any help/advice is appreciated.
drk

Flash stock image again thats all

When I flashed the stock, I got the bootloader image signed with key bad key.
When I tried flashing recovery twrp.img (3.2.1-potter) I got image not signed or corrupt
I didn't expect to see bad key when flashing stock.
And Oops I forgot it will show bad or corrupt no matter.
All fixed.
Thank You

Can't lock bootloader because I can't get into fastboot.

Hello, I've recently been stumped. Last night I attempted to install Lineage OS on my Axon 7 A2017U. I used Axon7Toolkit to unlock the bootloader and install TWRP. This was the first I've seen of the warning from google telling me to lock my bootloader. (My Motorola Nexus 6 never did this) So I ignored it until I had Lineage installed and when I tried to boot, the system was encrypted with a password. The internet said there is no password. I just have to wipe in TWRP. So I tried that to no avail. At that point I said screw this. I'm gonna go back to stock before I mess anything up. Flashed stock using MiFlash. Everything is good and dandy except that aforementioned warning message when booting. No matter what I try, I can't get into fastboot to lock the bootloader. Every time I try, it shows that message and boots normally. I've tried using "adb reboot bootloader" it went to the message and boots to OS. I tried holding power and volume up then selecting bootloader. Same result. I tried holding power and volume up then selecting recovery (this is when I realized TWRP was gone. It must have been overwritten when flashing stock firmware) and then reboot to bootloader. Same result. I really don't know what else to try. I guess I could ignore it, but that's really not what I'm looking for.

ScottDemon said:
Hello, I've recently been stumped. Last night I attempted to install Lineage OS on my Axon 7 A2017U. I used Axon7Toolkit to unlock the bootloader and install TWRP. This was the first I've seen of the warning from google telling me to lock my bootloader. (My Motorola Nexus 6 never did this) So I ignored it until I had Lineage installed and when I tried to boot, the system was encrypted with a password. The internet said there is no password. I just have to wipe in TWRP. So I tried that to no avail. At that point I said screw this. I'm gonna go back to stock before I mess anything up. Flashed stock using MiFlash. Everything is good and dandy except that aforementioned warning message when booting. No matter what I try, I can't get into fastboot to lock the bootloader. Every time I try, it shows that message and boots normally. I've tried using "adb reboot bootloader" it went to the message and boots to OS. I tried holding power and volume up then selecting bootloader. Same result. I tried holding power and volume up then selecting recovery (this is when I realized TWRP was gone. It must have been overwritten when flashing stock firmware) and then reboot to bootloader. Same result. I really don't know what else to try. I guess I could ignore it, but that's really not what I'm looking for.
Click to expand...
Click to collapse
The sticky edl thread has stock b15 with fastboot. Make sure to fully wipe and have stock recovery before attempting to relock.
Sent from my ZTE Axon 7 using Tapatalk

ScottDemon said:
Hello, I've recently been stumped. Last night I attempted to install Lineage OS on my Axon 7 A2017U. I used Axon7Toolkit to unlock the bootloader and install TWRP. This was the first I've seen of the warning from google telling me to lock my bootloader. (My Motorola Nexus 6 never did this) So I ignored it until I had Lineage installed and when I tried to boot, the system was encrypted with a password. The internet said there is no password. I just have to wipe in TWRP. So I tried that to no avail. At that point I said screw this. I'm gonna go back to stock before I mess anything up. Flashed stock using MiFlash. Everything is good and dandy except that aforementioned warning message when booting. No matter what I try, I can't get into fastboot to lock the bootloader. Every time I try, it shows that message and boots normally. I've tried using "adb reboot bootloader" it went to the message and boots to OS. I tried holding power and volume up then selecting bootloader. Same result. I tried holding power and volume up then selecting recovery (this is when I realized TWRP was gone. It must have been overwritten when flashing stock firmware) and then reboot to bootloader. Same result. I really don't know what else to try. I guess I could ignore it, but that's really not what I'm looking for.
Click to expand...
Click to collapse
No, you don't have to WIPE in TWRP, you have to FORMAT DATA! It does roughly the same thing (you lose all your data and internal storage) but since the internal partition is encrypted, it de-encrypts it. To avoid having to lose the internal storage again you just have to flash Magisk or SuperSU right after flashing the ROM (before booting for the first time) and you'll be able to change ROMs with no problem. (but flash magisk right after changing the rom too, of course).
The unlocked bootloader disclaimer is completely normal, however if you're annoyed by it you can get rid of it by following Raystef66's guide called "remove unlocked bootloader inscription".
Happy flashing. Knowing all that, you can go back to Lineage or sth again. Just remember this: If you have access to EDL mode you can get out of the nastiest of bricks. And the A2017U defaults to EDL if there's something seriously wrong. So the U os basically unbrickable
p.s.: NFound's AEX bootloader comes premade so that you won't have the unlocked bootloader inscription. But you have to use one of the Oreo ROMs.
p.p.s.: You can reinstall fastboot and lock but it's just a very bad decision. Just ask if you ever have that sort of trouble, at least I will see it and reply