Database Users

[HELP] Problem flashing TWRP recovery on ZUI

Hello, i have a problem flashing custom recovery TWRP on ZUI.
below are the details of the problems:
ZUI Version: 1.2.040
Unlock Bootloader: YES (I feel a bit sketch on this part, because the process does not wipe any data)
Custom recovery to be installed: Un-Official 2.8.7.0 TWRP Recovery for ZUK Z1 by Breadcrust
1. when i try to flash the recovery on fastboot mode, it gives me this:
writing 'recovery'...
FAILED (remote : Invalid data)
finished. total time" 0.418s
2. when i try boot the recovery on fastboot mode, it also gives error:
downloading 'boot.img'...
OKAY [0.362s]
booting...
FAILED (remote: bootimage: incomplete or not signed)
finished. total time: 0.369s
* For the solution, i have tried kingroot to allow root access ---> NOT SUCCESFULL
** For 2nd solution, i have tried downgrading the ZUI version ----> NOT SUCCESFULL (cannot get into qdloader mode long enough).
*** I also have tried re-downloading the recovery image without using download accelarator (IDM) ---> NOT SUCCESFULL
edit: please... if somebody know the problem, please teach me how to overcome the problem. thank you (* sorry bad english)

Unlock your bootloader and retry.

Already retried to unlock the bootloader.. But no luck.. Thanks for the tips btw

I have found the solution.. I will post it in the weekend

luqmanhans said:
I have found the solution.. I will post it in the weekend
Click to expand...
Click to collapse
when u post please tell my in the praivte
[email protected]

Kingroot worked for me bit only after the second try

Tengo10 said:
Kingroot worked for me bit only after the second try
Click to expand...
Click to collapse
can u explain me please how u do it with king root??

eyalyagel said:
can u explain me please how u do it with king root??
Click to expand...
Click to collapse
I coud've offered more direct support if you messaged me or replied to my thread.

Have you found any solution?

Breadcrust said:
I coud've offered more direct support if you messaged me or replied to my thread.
Click to expand...
Click to collapse
can u give me please the link or explain may the way????
thank u very much

eyalyagel said:
can u give me please the link or explain may the way????
thank u very much
Click to expand...
Click to collapse
Did you do fastboot -i ox2b4c oem unlock?

Breadcrust said:
Did you do fastboot -i ox2b4c oem unlock?
Click to expand...
Click to collapse
yes,
FAILED (remote: Oem unlock is not support)
finished. total time: 0.008s
and i allow the oem in the developer option....
also i have the same phone in my home but the difrrent bitween them:
1. have only home press in the bottom
the ather phone have home, back,manu, bottom this phone can be unlocked and i sucsses to instal twrp

I have the same problem like it desribed by the OP.
I have the chinese version of the ZUK.
The Bootloader seems to be unlocked. When i check it, it says Unlocked: true.
When i did the Unlock, it didnt wipe something. When I do the unlock, it says ok, but there is no reboot.
But somehow, i cant boot or flash a recovery. Every time I have the error, Invalid data or not signed.
Root does also not work.
I have the latest version of ZUI installed. Is this the problem?
I read the problem several times, but nobody posted a solution for this.

xnoobx said:
I have the same problem like it desribed by the OP.
I have the chinese version of the ZUK.
The Bootloader seems to be unlocked. When i check it, it says Unlocked: true.
When i did the Unlock, it didnt wipe something. When I do the unlock, it says ok, but there is no reboot.
But somehow, i cant boot or flash a recovery. Every time I have the error, Invalid data or not signed.
Root does also not work.
I have the latest version of ZUI installed. Is this the problem?
I read the problem several times, but nobody posted a solution for this.
Click to expand...
Click to collapse
I'm also facing the same problem with my ZUK Z1

ZUI 1.2 locked the bootloader.If the TWRP recovery image file is twrp.img,You can try to do these:
Code:
fastboot -i 0x2b4c boot twrp.img
then you will boot into a temporary TWRP recovery.Now you can do everything here utill it reboots or shutdown.
if you want to flash a permanent recovery, I suggest to you to convert your ZUI to COS.

hfutxqd said:
ZUI 1.2 locked the bootloader.If the TWRP recovery image file is twrp.img,You can try to do these:
Code:
fastboot -i 0x2b4c boot twrp.img
then you will boot into a temporary TWRP recovery.Now you can do everything here utill it reboots or shutdown.
if you want to flash a permanent recovery, I suggest to you to convert your ZUI to COS.
Click to expand...
Click to collapse
Dear
I was using CM12 new version till last week and i have lots of problems, specially with mobile signal during the calls voice is dropping signal is too week as well. So i have decided to move to ZUI version and it's perfect so far i'm not facing any problem. Only the vulnerable is there some kind of malware and GPS having some bugs i have checked with bbs.zuk forms and they are suppose to fix it with next update. so i was trying to install the stagefright fix via recovery.remaining everything is smooth and faster than CM12.

hfutxqd said:
ZUI 1.2 locked the bootloader.If the TWRP recovery image file is twrp.img,You can try to do these:
Code:
fastboot -i 0x2b4c boot twrp.img
then you will boot into a temporary TWRP recovery.Now you can do everything here utill it reboots or shutdown.
if you want to flash a permanent recovery, I suggest to you to convert your ZUI to COS.
Click to expand...
Click to collapse
I also tried to boot. But it also denies this action :/.
So with the latest version my boot loader is locked. Sounds wonderful.

luqmanhans said:
Hello, i have a problem flashing custom recovery TWRP on ZUI.
below are the details of the problems:
ZUI Version: 1.2.040
Unlock Bootloader: YES (I feel a bit sketch on this part, because the process does not wipe any data)
Custom recovery to be installed: Un-Official 2.8.7.0 TWRP Recovery for ZUK Z1 by Breadcrust
1. when i try to flash the recovery on fastboot mode, it gives me this:
writing 'recovery'...
FAILED (remote : Invalid data)
finished. total time" 0.418s
2. when i try boot the recovery on fastboot mode, it also gives error:
downloading 'boot.img'...
OKAY [0.362s]
booting...
FAILED (remote: bootimage: incomplete or not signed)
finished. total time: 0.369s
* For the solution, i have tried kingroot to allow root access ---> NOT SUCCESFULL
** For 2nd solution, i have tried downgrading the ZUI version ----> NOT SUCCESFULL (cannot get into qdloader mode long enough).
*** I also have tried re-downloading the recovery image without using download accelarator (IDM) ---> NOT SUCCESFULL
edit: please... if somebody know the problem, please teach me how to overcome the problem. thank you (* sorry bad english)
Click to expand...
Click to collapse
In this case, you need flash fw Z1_CN_OPEN_USER_Q4275715.1_L_ZUI_1.0.050_ST_150910 via sd card ( root internal memory/creat sdfuse folder), after turn off fone and boot phone via factory mode recovery ( voulme down + power ). If phone flash ok, version is 1.0.050. So, phone can flash twrp recovery and rom CyanogenMod 12.1 .
Goodluck
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luqmanhans said:
I have found the solution.. I will post it in the weekend
Click to expand...
Click to collapse
It is weekend now.
Can you please tell us the solution? I have the same problem & I have tried a lot of things with no luck!!! :crying:

hristos13gr said:
It is weekend now.
Can you please tell us the solution? I have the same problem & I have tried a lot of things with no luck!!! :crying:
Click to expand...
Click to collapse
First you must downgrade the ZUI from 1.2.040, just search this topic in this forum: how-to-flash-zuk-z1-zui-version-t3265741
After that you can boot with TWRP recovery. But if you failed to flash Cyanogen, use Modaco steps: 375804-convert-z1-from-zukui-to-cyanogen-os/
When your ZUK Z1 already use Cyanogen, you can flash to other recovery or ROMs easier .

DFU and fastboot. Brick Axon 7 A2017

I cant enter adb. only something like fastboot (bootloader) . also can start like ZTE Handset Diagnostic Interface(DFU)
can you help me? nothing works
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C:\adb> adb devices
List of devices attached
C:\adb>fastboot devices
2a47d296 fastboot
C:\adb>fastboot flash recovery twrp-3.0.3-1-ailsa_ii.img
target reported max download size of 536870912 bytes
sending 'recovery' (13536 KB)...
OKAY [ 0.316s]
writing 'recovery'...
FAILED (remote: unknown command)
finished. total time: 0.331s

I HAVE THE SAME ISSUE!(A2017G) SOMEONE HELP! :crying:

You're not bricked, you're just down ATM. If you can get into bootloader or EDL mode you're fine. Just gotta put some work in. First, you've probably got a bootloader that doesn't allow fastboot commands. (the reason why you're getting the unknown command error). You need to flash that via EDL if you don't want to downgrade/unlock your bootloader. There is SOOOO much to read out there that with a little searching and reading you'll be up in no time. This toolkit is a good place to start looking. https://forum.xda-developers.com/axon-7/development/tool-axon7toolkit-t3573108

nolimit78 said:
You're not bricked, you're just down ATM. If you can get into bootloader or EDL mode you're fine. Just gotta put some work in. First, you've probably got a bootloader that doesn't allow fastboot commands. (the reason why you're getting the unknown command error). You need to flash that via EDL if you don't want to downgrade/unlock your bootloader. There is SOOOO much to read out there that with a little searching and reading you'll be up in no time. This toolkit is a good place to start looking. https://forum.xda-developers.com/axon-7/development/tool-axon7toolkit-t3573108
Click to expand...
Click to collapse
Hey, I CAN use Fastboot commands. but i cant get to recovery mode even tho i flash it. my bootloader is unlocked. please help!! i am stuck

Well with the error message you posted, "unknown command" means that you're on the wrong bootloader. You have two methods to install TWRP. Bootloader or EDL. If you want to do it via bootloader you need to load the B20 bootloader and that'll allow for the fastboot flash recovery "name of img file".img command. If you're wanting to use EDL you'll need to use a tool to force the recovery image.

nolimit78 said:
You're not bricked, you're just down ATM. If you can get into bootloader or EDL mode you're fine. Just gotta put some work in. First, you've probably got a bootloader that doesn't allow fastboot commands. (the reason why you're getting the unknown command error). You need to flash that via EDL if you don't want to downgrade/unlock your bootloader. There is SOOOO much to read out there that with a little searching and reading you'll be up in no time. This toolkit is a good place to start looking. https://forum.xda-developers.com/axon-7/development/tool-axon7toolkit-t3573108
Click to expand...
Click to collapse
fastboot flash recovery twrp-3.0.3-1-ailsa_ii.img
target reported max download size of 536870912 bytes
sending 'recovery' (13536 KB)...
OKAY [ 0.316s]
writing 'recovery'...
FAILED (remote: unknown command)
finished. total time: 0.331s
I cant go to edl. Only DFU.
C:\adb>fastboot oem device-info
...
FAILED (remote: unknown command)
finished. total time: 0.034s
FAILED to all commands in fastboot

nolimit78 said:
Well with the error message you posted, "unknown command" means that you're on the wrong bootloader. You have two methods to install TWRP. Bootloader or EDL. If you want to do it via bootloader you need to load the B20 bootloader and that'll allow for the fastboot flash recovery "name of img file".img command. If you're wanting to use EDL you'll need to use a tool to force the recovery image.
Click to expand...
Click to collapse
Check This;;
:\Users\Bumthimble\Desktop\ADB>fastboot flash recovery recovery.img
target reported max download size of 536870912 bytes
sending 'recovery' (17917 KB)...
OKAY [ 0.424s]
writing 'recovery'...
OKAY [ 0.141s]
finished. total time: 0.565s
I get this but when i try to boot into recovery, it boots into fastboot mode. Help

Ok that means that both of you are using the G model. If you're able to get to your bootloader try using the tool that I linked above. I have the U model so I can't relate with some of your issues but I believe that if you can reach the bootloader the tool can help. Have you tried manually booting to EDL?

nolimit78 said:
Ok that means that both of you are using the G model. If you're able to get to your bootloader try using the tool that I linked above. I have the U model so I can't relate with some of your issues but I believe that if you can reach the bootloader the tool can help. Have you tried manually booting to EDL?
Click to expand...
Click to collapse
I did. but it doesnt boot into EDL ever. I dont know why, i doesnt recognise its commands

nolimit78 said:
Ok that means that both of you are using the G model. If you're able to get to your bootloader try using the tool that I linked above. I have the U model so I can't relate with some of your issues but I believe that if you can reach the bootloader the tool can help. Have you tried manually booting to EDL?
Click to expand...
Click to collapse
I have China version. I cant manually booti to EDL. it booting in DFU

i can only boot it to fastboot

See this thread: https://forum.xda-developers.com/axon-7/help/edl-twrp-stuck-fastboot-luck-t3569879

don't work.
ZTE Handset Diagnostic Interface(DFU)
with handmade deepflash cable
if I connect with a closed cable, it blinks the symbol of charging(empty battery with the lightning bolt) several times and boot in DFU

fatax said:
don't work.
ZTE Handset Diagnostic Interface(DFU)
with handmade deepflash cable
if I connect with a closed cable, it blinks the symbol of charging(empty battery with the lightning bolt) several times and boot in DFU
Click to expand...
Click to collapse
I have exactly the same issue.
And 2 weeks already. Can't find any solution. Searched all the internet.
There is no solution so far.
Have to wait untill someone will create a flashtool for DFU mode for Snapdragon 820.

Vick78 said:
I have exactly the same issue.
And 2 weeks already. Can't find any solution. Searched all the internet.
There is no solution so far.
Have to wait untill someone will create a flashtool for DFU mode for Snapdragon 820.
Click to expand...
Click to collapse
I gave the phone to a service center (unofficial) they will try to flash the phone directly to memory

fastboot still locked. they can not do anything

fatax said:
fastboot still locked. they can not do anything
Click to expand...
Click to collapse
that's a sad news. did they say anything?
what do they need to fix?

Vick78 said:
that's a sad news. did they say anything?
what do they need to fix?
Click to expand...
Click to collapse
I do not know, but my acquaintance with 4pda wrote: Hello. It's JOY NEWS! We HAVE RISE ONE BRICK! So wait soon we will lay out the instruction how to raise. The phone will have to be dismantled.

I have now the same problem how did you solved the problem? Or is there generaly any solution?

cybertronixx said:
I have now the same problem how did you solved the problem? Or is there generaly any solution?
Click to expand...
Click to collapse
Did you search on the forum before bumping a year-old thread?
So far there are 2 DFU guides, mine is the latest. (Google "dfu unbrick"). Though you might want to try an EDL cable before doing the process on the guide. Just use MiFlash or EDL Tool along with the cable, and you might fix it.

Noob can't unlock bootloader

Hi folks,
I just received my Essential Phone, purchased through amazon. As you recall, the Essential Phone was rumored to have an unlocked bootloader. This was confirmed by @essential confirming that it will, in a tweet.
However, this is not what I'm experiencing with the phone.
After powering it up and playing around a bit, I enabled USB debugging and linked it to my computer, where I have the latest (as of today) android platform tools installed. I rebooted to fastboot and tried to issue "fastboot oem unlock", as I did with my previous phone, a nexus 6p. However, it seems "oem" is no longer a valid subcommand of fastboot; it has been renamed to "flashing unlock", along with some other new-to-me commands:
Code:
$ fastboot --help
usage: fastboot [ <option> ] <command>
commands:
.....
flashing lock Locks the device. Prevents flashing.
flashing unlock Unlocks the device. Allows flashing
any partition except
bootloader-related partitions.
flashing lock_critical Prevents flashing bootloader-related
partitions.
flashing unlock_critical Enables flashing bootloader-related
partitions.
flashing get_unlock_ability Queries bootloader to see if the
device is unlocked.
flashing get_unlock_bootloader_nonce Queries the bootloader to get the
unlock nonce.
flashing unlock_bootloader <request> Issue unlock bootloader using request.
flashing lock_bootloader Locks the bootloader to prevent
bootloader version rollback.
The "flashing unlock" command looks interesting. Let's try that:
Code:
$ fastboot flashing unlock
...
FAILED (remote: Flashing Unlock is not allowed
)
finished. total time: 0.003s
Hmmm... I don't like the look of that. Well, let's see what "get_unlock_ability" says:
Code:
$ fastboot flashing get_unlock_ability
...
(bootloader) get_unlock_ability: 0
OKAY [ 0.000s]
finished. total time: 0.000s
Ok, that looks bad too. Let's try those other new commands and see if we can get anywhere...
Code:
$ fastboot flashing unlock_critical
...
FAILED (remote: Flashing Unlock is not allowed
)
finished. total time: 0.002s
Nope.
Code:
$ fastboot flashing get_unlock_bootloader_nonce
...
FAILED (remote: unknown command)
finished. total time: 0.000s
Double nope.
Well that's not encouraging. I don't claim to be any sort of expert in regards to unlocking phones, but I can't find any other methods using these tools, and Essential's docs aren't any help. I've contact their phone support but haven't heard back after about an hour. (They use some ridiculous system where you schedule a callback... Not happy.)
So, I'm feeling pretty upset. Let's be clear here:
Essential said this:
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}
But shipped a product with this:
Code:
$ fastboot flashing get_unlock_ability
...
(bootloader) get_unlock_ability: 0
OKAY [ 0.000s]
finished. total time: 0.000s

Did you turn on the allow unlocking toggle in developer options?

tw1tch175 said:
Did you turn on the allow unlocking toggle in developer options?
Click to expand...
Click to collapse
Thanks, that did the trick

xMopx said:
Thanks, that did the trick
Click to expand...
Click to collapse
So ...wich are the right steps and command d to unlock the bootloader?
thx

mastercut said:
So ...wich are the right steps and command d to unlock the bootloader?
thx
Click to expand...
Click to collapse
1) Check the box next to OEM Unlockable.
2) Then reboot your phone to fastboot
3) In a command prompt within the adb folder: type -> fastboot flashing unlock
4) Use the volume button to click yes when prompted.
Cheers

frhoward said:
1) Check the box next to OEM Unlockable.
2) Then reboot your phone to fastboot
3) In a command prompt within the adb folder: type -> fastboot flashing unlock
4) Use the volume button to click yes when prompted.
Cheers
Click to expand...
Click to collapse
I've tried all of these steps and once I get to the fastboot flashing unlock step my cmd prompt just hangs at waiting for device and I never get the option for "Yes." Instead I have Start, Recovery, Power off, etc.
What am I doing wrong?

DenverDroid said:
I've tried all of these steps and once I get to the fastboot flashing unlock step my cmd prompt just hangs at waiting for device and I never get the option for "Yes." Instead I have Start, Recovery, Power off, etc.
What am I doing wrong?
Click to expand...
Click to collapse
First in fastboot type "fastboot devices" if a string of numbers answers it is ok otherwise you need fastboot driver ....have you cheked?

Hi guys, I have an issue with unlocking the bootloader. fastboot devices returns the device ID, but flashing unlock gives me failed, unknown command error. I cannot get it working. Any ideas?
/edit: changing PC's helped

Essential Phone stuck in Start up screen with Locked Bootloader
My Essential Phone is frozen at boot up screen while trying to Update the latest Android P Beta 3 ... I restarted the phone on promoting to do so after downloading the update and now I'm here stuck with boot up screen.
Boot loader: Locked
Please let me know if there is a way around this to get it back up !!
Pleaseeeee....
Thanks in advance!!

[email protected] said:
My Essential Phone is frozen at boot up screen while trying to Update the latest Android P Beta 3 ... I restarted the phone on promoting to do so after downloading the update and now I'm here stuck with boot up screen.
Boot loader: Locked
Please let me know if there is a way around this to get it back up !!
Pleaseeeee....
Thanks in advance!!
Click to expand...
Click to collapse
If you've already waited for some time to pass, i would let it go dead, then plugin and allow it to power up on its own. I've only had limited success with this though. Other options are goto into recovery mode and factory reset.

wrecklesswun said:
If you've already waited for some time to pass, i would let it go dead, then plugin and allow it to power up on its own. I've only had limited success with this though. Other options are goto into recovery mode and factory reset.
Click to expand...
Click to collapse
Yeah, I had such instances too in the past. But no luck this time...
My OEM locking is not switched on and I'm unable to sideload the OTA or Rest the phone to factory.

Can't Re-Unlock bootloader?

Hi i've done something stupid, i've blocked bootloader idk why, anyway im in LineageOs 16, but now i can't back to stock or flash something else ¿i cant re-unlock bootloader?

What is the error that you're getting?

Fastboot flash bootloader permission denied

elHeisen said:
Fastboot flash bootloader permission denied
Click to expand...
Click to collapse
Yes you can't flash before unlocking? How about 'fastboot unlock bootloader' or was it 'fastboot bootloader unlock'? Sorry, tired hehe.

weazie said:
Yes you can't flash before unlocking? How about 'fastboot unlock bootloader' or was it 'fastboot bootloader unlock'? Sorry, tired hehe.
Click to expand...
Click to collapse
yep i've tried too but i get this
...
(bootloader) Check 'OEM unlocking' in Android Settings > Developer
(bootloader) Options
OKAY [ -0.000s]
finished. total time: -0.000s
and i can't enable OEM unlocking in Android P

elHeisen said:
yep i've tried too but i get this
...
(bootloader) Check 'OEM unlocking' in Android Settings > Developer
(bootloader) Options
OKAY [ -0.000s]
finished. total time: -0.000s
and i can't enable OEM unlocking in Android P
Click to expand...
Click to collapse
Did you find any solution?
Same problem!

Works for me!
elHeisen said:
yep i've tried too but i get this
...
(bootloader) Check 'OEM unlocking' in Android Settings > Developer
(bootloader) Options
OKAY [ -0.000s]
finished. total time: -0.000s
and i can't enable OEM unlocking in Android P
Click to expand...
Click to collapse
First, install gnirehtet for reverse tethering internet with usb and pc
https://github.com/Genymobile/gnirehtet
Then you will see that you can enable OEM

I'm still not able to unlock oem in settings. I have WIFI on and did all the updates to the latest

elHeisen said:
Fastboot flash bootloader permission denied
Click to expand...
Click to collapse
Same error here. Did anyone find a solution?

Constantinologia said:
Same error here. Did anyone find a solution?
Click to expand...
Click to collapse
Can you update your phone in settings? if not wait 7 days with phone on and try again. An update fixed my phone.

mrsiri said:
Can you update your phone in settings? if not wait 7 days with phone on and try again. An update fixed my phone.
Click to expand...
Click to collapse
I can't even load the system. The only two screens i can see are the Fastboot and "your device is corrupted". The Flashing option is locked and every rom i try to flash gives me the access denied error.
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Constantinologia said:
I can't even load the system. The only two screens i can see are the Fastboot and "your device is corrupted". The Flashing option is locked and every rom i try to flash gives me the access denied error.
View attachment 5251849 View attachment 5251851
Click to expand...
Click to collapse
Can you download the stock rom from your current version flashed and boot it? use command "fastboot boot boot.img". Boot.img is inside of the flashable stock rom zip. After this try toggling the oem unlock if not wait 7 days and try to update phone like regular ota in setings

mrsiri said:
Can you download the stock rom from your current version flashed and boot it? use command "fastboot boot boot.img". Boot.img is inside of the flashable stock rom zip. After this try toggling the oem unlock if not wait 7 days and try to update phone like regular ota in setings
Click to expand...
Click to collapse
I found a stock rom that matches the descriptions from ro.build.fingerprint[0]: motorola/rav_retail/rav:10/QPJS30 and 63-35-1-15. Coudn'd find a match for 37df17:user/release-key.
Still got the error for fastboot boot boot.img:
downloading 'boot.img'...
OKAY [ 1.463s]
booting...
FAILED (status read failed (Too many links))
finished. total time: 37.486s

Constantinologia said:
I found a stock rom that matches the descriptions from ro.build.fingerprint[0]: motorola/rav_retail/rav:10/QPJS30 and 63-35-1-15. Coudn'd find a match for 37df17:user/release-key.
Still got the error for fastboot boot boot.img:
downloading 'boot.img'...
OKAY [ 1.463s]
booting...
FAILED (status read failed (Too many links))
finished. total time: 37.486s
Click to expand...
Click to collapse
I don't remember the steps to reproduce, but I remember being possible to take the very own boot.img currently flash on your phone. I think it was through adb commands, what if you try booting that one instead? That's what I did on mine, but it didn't help with toggling oem unlock, only entering the system

I accidentally locked mine and im in the same situation as everyone here, but i think the only solution is BlankFlashing or sideloading a signed OTA on it... Im trying everyday new possible methods of fixing it and if i get into some ill share here

hi guys, had exact same issue, spent hours trolling through the net, forums etc and this forum fixed it for me. I was about to throw the phone out.
something tells me that you have to have the boot image from the software you had installed before the crash/brick. Run the "fastboot boot boot.img"
i tried numerous boot.img's thinking I've spent too much time this device so as I turned my back on the phone I hear a 'Hello Moto' WTF...Up and running again. Good Luck

thehulk1969 said:
hi guys, had exact same issue, spent hours trolling through the net, forums etc and this forum fixed it for me. I was about to throw the phone out.
something tells me that you have to have the boot image from the software you had installed before the crash/brick. Run the "fastboot boot boot.img"
i tried numerous boot.img's thinking I've spent too much time this device so as I turned my back on the phone I hear a 'Hello Moto' WTF...Up and running again. Good LuckView attachment 5274327
Click to expand...
Click to collapse
It would be the solution if the stock was corrupted, but i have locked mine on StyxOS, and there isn't any boot.img for it so stock boot.img gives a system corrupted error. But nice idea.
Edit: Does it need to match the ro.fingerprint on getvar all? only tested with latest pie, so

How to unlock a Moto G7 xt1962-6

I rebooted my G7 into fastboot to wipe the cache and I got stuck in it. I wasn't trying to load a new image or replace anything. When I try any option (Start, Restart Bootloader, Recovery mode, Factory Mode, etc) it fails with the following message in the log:
Code:
SSM: Android image rollback: 8.9
failed to validate boot image
ERROR: Failed to pass validation, backup to fastboot
Boot up failed
So, I downloaded adb/fastboot, got the drivers installed, and tried to download the latest image from https:__mirrors.lolinet.com/firmware/moto/river/official/RETEU/ and then tried to flash it.
When I try to replace boot.img:
Code:
C:\temp\moto-g7-firmware> fastboot flash boot boot.img
(bootloader) is-logical:boot_a: not found
Sending 'boot_a' (32768 KB) OKAY [ 0.990s]
Writing 'boot_a' (bootloader) Image boot failed validation
(bootloader) Preflash validation failed
FAILED (remote: '')
fastboot: error: Command failed
Well, that's probably because I didn't unlock my bootloader first? I didn't know I'd be doing this. Maybe there's a stock boot image that wouldn't cause me problems?
I tried to unlock my bootloader. I got my boot key but when I run:
Code:
C:\temp\moto-g7-firmware> fastboot oem unlock XXXXXXXXXXXXXXXXXXXXXX
(bootloader) Check 'Allow OEM Unlock' in Android Settings > Developer
(bootloader) Options
OKAY [ 0.021s]
Finished. Total time: 0.027s
Well, this sucks. I can't get into the phone to get to the Android Settings menu. I feel stuck. Does anybody have any ideas for me?

rsshilli said:
I rebooted my G7 into fastboot to wipe the cache and I got stuck in it. I wasn't trying to load a new image or replace anything. When I try any option (Start, Restart Bootloader, Recovery mode, Factory Mode, etc) it fails with the following message in the log:
Code:
SSM: Android image rollback: 8.9
failed to validate boot image
ERROR: Failed to pass validation, backup to fastboot
Boot up failed
So, I downloaded adb/fastboot, got the drivers installed, and tried to download the latest image from https:__mirrors.lolinet.com/firmware/moto/river/official/RETEU/ and then tried to flash it.
When I try to replace boot.img:
Code:
C:\temp\moto-g7-firmware> fastboot flash boot boot.img
(bootloader) is-logical:boot_a: not found
Sending 'boot_a' (32768 KB) OKAY [ 0.990s]
Writing 'boot_a' (bootloader) Image boot failed validation
(bootloader) Preflash validation failed
FAILED (remote: '')
fastboot: error: Command failed
Well, that's probably because I didn't unlock my bootloader first? I didn't know I'd be doing this. Maybe there's a stock boot image that wouldn't cause me problems?
I tried to unlock my bootloader. I got my boot key but when I run:
Code:
C:\temp\moto-g7-firmware> fastboot oem unlock XXXXXXXXXXXXXXXXXXXXXX
(bootloader) Check 'Allow OEM Unlock' in Android Settings > Developer
(bootloader) Options
OKAY [ 0.021s]
Finished. Total time: 0.027s
Well, this sucks. I can't get into the phone to get to the Android Settings menu. I feel stuck. Does anybody have any ideas for me?
Click to expand...
Click to collapse
https://forum.xda-developers.com/general/general/update-moto-lenovo-moto-smart-assistant-t3951714/

Thank you for the response. Unfortunately, LMSA doesn't work either . It says "This device isn't supported". I have no idea why not.
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rsshilli said:
Thank you for the response. Unfortunately, LMSA doesn't work either . It says "This device isn't supported". I have no idea why not.
Click to expand...
Click to collapse
It seems that your USB debugging or OEM unlock toggle was un-ticked.
Do you have recovery available to format/reset device?
RSDLite doesn't work with your model?

Negative
Nope. I can't seem to get RSD Lite to work on Windows 10 to recognize my phone .

rsshilli said:
Nope. I can't seem to get RSD Lite to work on Windows 10 to recognize my phone .
Click to expand...
Click to collapse
It is possible to flash the stock firmware while the bootloader is locked.
BUT: You can't only flash a single image, like the boot.img. You must execute the whole fastboot commands in the same order as you can find in the flashfile.xml inside the firmware.zip!!
I don't know why, but only single commands do not work.
BEFORE TRYING THIS: Make sure you flash the correct firmware! IT MUST be the same build as currently installed!! No RETAIL version or an older build version!

Well, that's weird
Huh. I tried LMSA tonight again just for fun and it worked fine this time. It found the image, downloaded it, and reflashed the phone to factory settings. Yay! I'm back in. I tried it many times before. I know my firmware updated on the phone a few days before this happened. I guess I just needed to wait for a bit. Thank you everybody.
Ryan

WoKoschekk said:
It is possible to flash the stock firmware while the bootloader is locked.
BUT: You can't only flash a single image, like the boot.img. You must execute the whole fastboot commands in the same order as you can find in the flashfile.xml inside the firmware.zip!!
I don't know why, but only single commands do not work.
BEFORE TRYING THIS: Make sure you flash the correct firmware! IT MUST be the same build as currently installed!! No RETAIL version or an older build version!
Click to expand...
Click to collapse
For next time, how does one find the exact firmware needed? I could never figure that out.

rsshilli said:
For next time, how does one find the exact firmware needed? I could never figure that out.
Click to expand...
Click to collapse
Code:
fastboot getvar all