Develop Bugs

Soft Bricked - Unable to Sideload OTA

Hi all,
My Nexus 5x (16gb - all stock.) went and soft bricked today. Not sure why - just seemed to start wanting to constantly restart - never making it past the white google text part of the boot process. Not sure if it's an update or hardware. No trauma or dropping of the phone - which makes me think s/w rather than h/w.
I have attempted to install a rescue OTA update (instructions I followed are from technobill - don't have enough posts to add a link). However, when running "adb sideload <file>" I get a "failed to read command" error. Have tired multiple cables/ports however to no avail.
(Recovery screen shows the following build details: 7.0/NBD90W/3239497)
Any ideas?
Thanks.
Somewhat Irked

SomewhatIrked said:
Hi all,
My Nexus 5x (16gb - all stock.) went and soft bricked today. Not sure why - just seemed to start wanting to constantly restart - never making it past the white google text part of the boot process. Not sure if it's an update or hardware. No trauma or dropping of the phone - which makes me think s/w rather than h/w.
I have attempted to install a rescue OTA update (instructions I followed are from technobill - don't have enough posts to add a link). However, when running "adb sideload <file>" I get a "failed to read command" error. Have tired multiple cables/ports however to no avail.
(Recovery screen shows the following build details: 7.0/NBD90W/3239497)
Any ideas?
Thanks.
Somewhat Irked
Click to expand...
Click to collapse
Did your phone just reboot in the middle of doing something innocuous then start bootlooping? Were/Are you on total stock with bootloader locked? If both yes, it is probably hardware issue you are encountering.
Regarding sideloading, did you place your Android recovery in sideload mode?
Did you verify adb can "see" your device using "adb devices"?

SomewhatIrked said:
Hi all,
My Nexus 5x (16gb - all stock.) went and soft bricked today. Not sure why - just seemed to start wanting to constantly restart - never making it past the white google text part of the boot process. Not sure if it's an update or hardware. No trauma or dropping of the phone - which makes me think s/w rather than h/w.
I have attempted to install a rescue OTA update (instructions I followed are from technobill - don't have enough posts to add a link). However, when running "adb sideload <file>" I get a "failed to read command" error. Have tired multiple cables/ports however to no avail.
(Recovery screen shows the following build details: 7.0/NBD90W/3239497)
Any ideas?
Thanks.
Somewhat Irked
Click to expand...
Click to collapse
Well luckily I made this post today.

The more this goes on, the more I believe it to be hardware ...
@sfhub - reasonably innocuous. Had just opened one or 2 apps that morning. Not sure what had updated overnight app/os wise. Not anything interesting as far as I can tell. Once I managed to get it into recovery "adb devices" was returning the phone.
@bardhi92 - I saw that once I got in. However, I couldn't get it to see my phone.
Updated things I have tried and why I've all but thrown in the towel:
After the OTA rescue sideload failed I started trying a few different things. It stopped taking me into recovery mode more frequently, at least it seemed that way - it would just keep bootlooping. My main issue is that I has a locked bootloader, which stopped me whacking TWRP on and loading on a custom rom - just to see if that worked.
I thought it might let me sideload on a factory default img file. Turns out nope.
However I used NRT to "Flash Stock + Unroot" (with "Soft Brick/Bootloop" checked) which for some reason, then allowed me to get back into recovery mode. I had also removed the sim card/tray at this point. May have been either or neither of those that allowed me to get into recovery mode. Can't say for certain.
I cleared /cache and /data and then attempted the OTA rescue update again. This time it failed at 45% (according to my cmd prmpt) with the error: "* failed to read command: No error". I'm not sure text was on the phone at the time. But it did manage to boot into Android. I quickly stepped through the various intro steps (putting in the sim, adding my mail google account details).
I went to get a beer. Only to find it boot looping again.
Not to be deterred, I vowed to try again. Same steps as before (remove sim, nrt voodoo). This time however the OTA rescue worked and fully completed. I went through the intro steps again. This time I quickly turned on dev options, enabled usb debugging and sorted out the OEM bootloader. I thought this would be smart, just in case it hapened again. Once I chose to unlock ("fastboot reboot", selected yes), it decided to start boot looping again.
The main annoyance is: I don't think I have any proof of purchase, even though it's in warranty. That, and I now live in Dubai - so shipping back to the UK where I brought it is going to be killer. But I think it's the path of least resistance at the moment.

SomewhatIrked said:
The more this goes on, the more I believe it to be hardware ...
@sfhub - reasonably innocuous. Had just opened one or 2 apps that morning. Not sure what had updated overnight app/os wise. Not anything interesting as far as I can tell. Once I managed to get it into recovery "adb devices" was returning the phone.
@bardhi92 - I saw that once I got in. However, I couldn't get it to see my phone.
Updated things I have tried and why I've all but thrown in the towel:
After the OTA rescue sideload failed I started trying a few different things. It stopped taking me into recovery mode more frequently, at least it seemed that way - it would just keep bootlooping. My main issue is that I has a locked bootloader, which stopped me whacking TWRP on and loading on a custom rom - just to see if that worked.
I thought it might let me sideload on a factory default img file. Turns out nope.
However I used NRT to "Flash Stock + Unroot" (with "Soft Brick/Bootloop" checked) which for some reason, then allowed me to get back into recovery mode. I had also removed the sim card/tray at this point. May have been either or neither of those that allowed me to get into recovery mode. Can't say for certain.
I cleared /cache and /data and then attempted the OTA rescue update again. This time it failed at 45% (according to my cmd prmpt) with the error: "* failed to read command: No error". I'm not sure text was on the phone at the time. But it did manage to boot into Android. I quickly stepped through the various intro steps (putting in the sim, adding my mail google account details).
I went to get a beer. Only to find it boot looping again.
Not to be deterred, I vowed to try again. Same steps as before (remove sim, nrt voodoo). This time however the OTA rescue worked and fully completed. I went through the intro steps again. This time I quickly turned on dev options, enabled usb debugging and sorted out the OEM bootloader. I thought this would be smart, just in case it hapened again. Once I chose to unlock ("fastboot reboot", selected yes), it decided to start boot looping again.
The main annoyance is: I don't think I have any proof of purchase, even though it's in warranty. That, and I now live in Dubai - so shipping back to the UK where I brought it is going to be killer. But I think it's the path of least resistance at the moment.
Click to expand...
Click to collapse
So, you flashed the .TOT file, sideloaded the given OTA within the stock recovery bootloader that comes with the .TOT file, and cleared cache/factory reset?
Please condense it. If you managed to start up the phone, that's a huge success for people who have not been able to yet.

bardhi92 said:
So, you flashed the .TOT file, sideloaded the given OTA within the stock recovery bootloader that comes with the .TOT file, and cleared cache/factory reset?
Please condense it. If you managed to start up the phone, that's a huge success for people who have not been able to yet.
Click to expand...
Click to collapse
In short:
OTA rescue failed during adb sideload,
Tried bullhead-nbd90w-factory-d2f11c5f.zip & removed sim tray - seemed to allow access to recovery mode,
OTA rescue claims to have failed at 47% during adb sideload- still booted into android. However briefly. Went back to bootloop,
Tried bullhead-nbd90w-factory-d2f11c5f.zip & removed sim tray - seemed to allow access to recovery mode,
OTA rescue completed via adb sideload,
Turned on dev options (usb debug, oem unlock),
Booted to fastboot - unlocked bootloader. Now back to bootlooping
@bardhi92 - I could not get the LG utility to detect my phone. Will attempt again tomorrow.

SomewhatIrked said:
@bardhi92 - I could not get the LG utility to detect my phone. Will attempt again tomorrow.
Click to expand...
Click to collapse
IMO you shouldn't flash the TOT file. If you end up bootlooping again, your phone will be stuck in bootloader locked mode with no ability to unlock it.
If you were able to get your phone to boot into android once, there is really nothing the TOT file will do for you that you can't do from TWRP or bootloader, whereas once it locks your bootloader, there are problems you can no longer fix like EFS corruption (which likely isn't your problem).
In the end, you probably do have eMMC that is slowly starting to fail. There is usually error correction on the eMMC that can lock out bad blocks but if it gets to serious, it'll fail. This is why reflashing stuff over and over sometimes works.

HTC DESIRE 820 (OPFJ400 D820N) - "Decrypt Storage" Problem

Hello fellow android lovers!
I need help with said Smartphone from everyone with a knowledge bigger than mine.
Ill start from the beggining:
Friend of mine had this phone for a really long time. The condition of said device is nearly new (Few minor scratches here and there).
He decided not so long ago, to change his phone to newer one, so that one went to the drawer where it was for like a year or so.
He came to me a week ago with this phone, because he wanted to give it to his child as a first smartphone.
On that HTC device, after booting the system, there is a notification "Decrypt Storage" where you need to enter password to decrypt ROM memory. He said he never used any password on his device and even on new smartphone, he did not put any lock kode or pattern.
After entering any password, even with one letter, the notification says: "The password is correct, but unfortunately your data is corrupt" then there is a "reset phone" whitch restores smartphone to factory state.
Sadly, this doesnt work. It shows the same notification after factory reset. More like a bootloop but with a note.
I tried to hard reset it, but after i choose in bootloader "Factory reset", it takes me to main menu of bootloader and it says "Failed"
I also tried to get to the phone via USB. I installed htc usb drivers, got the binares to unlock bootloader and the fastboot option works, adb isn't.
I tried to use Fastboot factory resset command, tried also flashing TWRP recovery and nothing.
The wierd thing is, that the bootloader unlock binaries is not working as i see on the device because after "Unlocking" Bootloader, i go to the Bootloader menu and it allways says:
*****LOCKED*****
*****SOFTWARE STATUS: MODIFIED*****
*****SECURITY WARNING*****
Click to expand...
Click to collapse
The wierd thing is, that software status was modified even when he gave me this phone to work with. He is not the type of android poweruser. I doubt that he will modify his software.
Can somone help me with some tips how to flash a new system or get this device to work? I am banging my head on the wall right now. I am out of options.

How to enter bootloader in Q7?

I wanted to try these instructions of unlocking bootloader:
https://www.techdroidtips.com/lg-q7-2018-unlock-bootloader/
However in the beginning of the procedure it is impossible to reboot into bootloader (which is needed to obtain device ID). When the command "adb reboot bootloader" is executed then the phone simply reboots into system again. (Attention: when "adb reboot recovery" is executed then it does Factory Reset without any prompt!!)
If to simply switch off the phone, and afterwards to try any many various keys combinations (like e.g. Vol- & Power) the phone always boots immediatelly into system.
What's going on? Has manufacturer intentionally blocked any possibility to boot into a bootlader?
Maybe this is for sake of typical antitheft applications? No way to do a factory reset etc? (To boot into "recovery" which just wipes data is possible only if screen unlocked.)
If so, then there is an inconsistency: after reboot and some initial booting the request of screen unlock arrives - before completing loading the system. So if a person don't know screen unlocking pattern tnen phone won't complete booting and would-be antitheft application won't do its running.
Wysłane z mojego LM-Q610.EMW przy użyciu Tapatalka

plejadrian said:
I wanted to try these instructions of unlocking bootloader:
https://www.techdroidtips.com/lg-q7-2018-unlock-bootloader/
However in the beginning of the procedure it is impossible to reboot into bootloader (which is needed to obtain device ID). When the command "adb reboot bootloader" is executed then the phone simply reboots into system again. (Attention: when "adb reboot recovery" is executed then it does Factory Reset without any prompt!!)
If to simply switch off the phone, and afterwards to try any many various keys combinations (like e.g. Vol- & Power) the phone always boots immediatelly into system.
What's going on? Has manufacturer intentionally blocked any possibility to boot into a bootlader?
Maybe this is for sake of typical antitheft applications? No way to do a factory reset etc? (To boot into "recovery" which just wipes data is possible only if screen unlocked.)
If so, then there is an inconsistency: after reboot and some initial booting the request of screen unlock arrives - before completing loading the system. So if a person don't know screen unlocking pattern tnen phone won't complete booting and would-be antitheft application won't do its running.
Wysłane z mojego LM-Q610.EMW przy użyciu Tapatalka
Click to expand...
Click to collapse
You can try all you want, the bootloader is not able to be unlocked as you have been told here.
I have no problems booting to bootloader with adb but you can also boot to bootloader/fastboot mode
by power off, hold vol down and plug usb cable to pc.

Hi pals, so, this https://www.kingoapp.com/root-system-lg-q7.htm is just fake news? TY

oldslowdiver said:
Hi pals, so, this https://www.kingoapp.com/root-system-lg-q7.htm is just fake news? TY
Click to expand...
Click to collapse
Could be. I once came across an article on unlocking, rooting, and TWRPing the Q7. Everything in it was false, not possible, or didn't exist (TWRP for the Q7).
Anyway, you can give it a shot and see what happens.
ZTE Axon 7 A2017U, /e/ v0.1 ROM, microG (NoGapps), Multiboot, XDA Legacy

'give it a shot' doesn't sound enough safe to me TY, btw

oldslowdiver said:
Hi pals, so, this https://www.kingoapp.com/root-system-lg-q7.htm is just fake news? TY
Click to expand...
Click to collapse
Does not work "yet".

knusto said:
Does not work "yet".
Click to expand...
Click to collapse
And it will never work : The LG politic is to not open the bootloader. It will not change until this phone is dead, at least.
Just look at the Q6, not open yet. No hope.

xoraxfr said:
And it will never work : The LG politic is to not open the bootloader
Click to expand...
Click to collapse
What? KingoRoot can root systems with locked bootloader.
It did already many times for mine and my friends phones and tablets.
Kingoo team doesn't wait for manufacturer policy change but searches for system "safety" wholes and backdoors.
Every system has such, just there's need to find them (hack a system "security" protection against knowledgable users).
And to make it possible sooner on your device you had better avoid "system update", security updates and other bulls**t . Switch the option/service off, freeze it with IceBox.
Don't believe about security rationale! It's to keep aware users from taking control of their phones!
(Personaly, a user, client who buys new phone, should have the right to choose! If have brains to handle "security" on his/her own then ON DEMAND should receive system unlocking or WHATSEVER hindering FULL SYSTEM ACCESS!
It is HUMAN RIGHTS issue!
I think, the issue should go political. Yeaah, a person carries a device with Android everywhere, for all day and night, uses it for regular communication with the whole world, in all areas of activity, ranging from professional and business up to very intimate ones. A person knows it spies him/her, but it's nothing person can do to take full control over this small spying device, afterall purchased for quite big sum of money in many cases.
Отправлено с моего MediaPad Pro через Tapatalk

How many of you still have LG Q7 with locked bootloader ? (Bootloader can be unlocked now)
There 's way to get it unlocked: https://github.com/bkerler/mtkclient Also one Developer is trying to make TWRP recovery to later be able to flash Treble GSI's. It s work-in-progress. https://github.com/R0rt1z2/android_device_lge_mcv5a...
forum.xda-developers.com

your device is corrupt. it can not be trusted and not boot

I'm sorry if the post is not in the right place.
I own a z2 force that turned itself off and the rear camera did not work.
Putting the "power low" message on the recovery screen, even when the full charge appeared, after a time off "power ok" was displayed.
One moment he did not call any more and I tried bootloader, but without being able to activate usb debugging (my fatal error!), Now the message "your device is corrupted. It can not be trusted and it does not boot" and I can not unlock bootloader nor flash a new rom to boot the device.
obs: camera and battery problems appeared after the upgrade via ota to 8.0 actions

Solved.
eriton carlos said:
I'm sorry if the post is not in the right place.
I own a z2 force that turned itself off and the rear camera did not work.
Putting the "power low" message on the recovery screen, even when the full charge appeared, after a time off "power ok" was displayed.
One moment he did not call any more and I tried bootloader, but without being able to activate usb debugging (my fatal error!), Now the message "your device is corrupted. It can not be trusted and it does not boot" and I can not unlock bootloader nor flash a new rom to boot the device.
obs: camera and battery problems appeared after the upgrade via ota to 8.0 actions
Click to expand...
Click to collapse
I was able to start the device after hours looking for a solution, now I'm flashing a new rom to try to fix the camera problem and automatic shutdown.

How do you solve it?

I usually buy second hand Motorola phones (also this ATT Z2F), but I've never met the problem on individual hardwares yet (like camera, fingerprint sensor). Almost errors can be solved via flashing a right firmware. I think you can now flash fw via Lenovo Moto Smart Assistant (LMSA). If you use flashall.bat method, just take a look at the xml file and compare it to the content of flashall.bat (two types can be opened by Notepad, Notepad++ is recommended). The xml one shows what will be flashed.
For example: in the xml one has oem.img_sparsechunk.0-1-2, but in flashall.bat only has: fastboot flash oem oem.img
If you continue, your phone won't boot.
You have to edit flashall.bat:
fastboot flash oem oem.im_sparsechunk.0
fastboot flash oem oem.im_sparsechunk.1
fastboot flash oem oem.im_sparsechunk.2
Save and continue your works.
The xml is the standard file for RSD Lite. But, RSD seems not to be supported on recent PC hardwares, so step-by-step fastboot or flashall.bat is recently used. Therefore, just take a look before flashsing (other preparations won't be mentioned here). You should flash the equal or higher version to your current fw version on your phone.
Hope this works for you all.

i'm facing same problem,
eriton carlos said:
I was able to start the device after hours looking for a solution, now I'm flashing a new rom to try to fix the camera problem and automatic shutdown.
Click to expand...
Click to collapse
how you get repaired your phone?

Struggling to unlock booloader: getting weird barcodes

I am following the instructions from motorola-global-portal.custhelp.com/app/standalone/bootloader/unlock-your-device-a
I've downloaded Motorola drivers for Mac, as well as platform-tools. I am booting the phone to booloader but then a weird barcode shows up: imgur.com/a/8sT2lds
Any idea how to make progress from there? By the way my phone model is XT2029-2

Nycticorax said:
I am following the instructions from motorola-global-portal.custhelp.com/app/standalone/bootloader/unlock-your-device-a
I've downloaded Motorola drivers for Mac, as well as platform-tools. I am booting the phone to booloader but then a weird barcode shows up: imgur.com/a/8sT2lds
Any idea how to make progress from there? By the way my phone model is XT2029-2
Click to expand...
Click to collapse
Would like to know it too. Passed some days searching the web for a answer, and got none. The only thing I get when scanning the barcode is a number that AFAIK doesn't match any serial nor anything at all in the phone; just a number from what I can tell. Using fastboot oem get_unlock_data doens't work at all too, I just get a "command unknown" error returned from fastboot. Tried different drivers, none seemed to work, and the only ones that did, gave me the barcode and the fastboot error when trying to unlock. A very weird error, this one; fastboot devices work just fine, fastboot getvar all too, so it really doesn't seem like a fastboot or driver issue. My last try was this article (https://www.xda-developers.com/how-to-discover-hidden-fastboot-commands/) to see if I could get a list of the phones OEM commands and figure out how to unlock it. Tried to extract the bootloader from the firmware I downloaded online, using a tool I found on the forum, but no success until now. Will try to root the phone and extract it as it is shown in the tutorial to see if I can get more lucky. I saw somewhere that there's an app called sunshine that was used to unlock some older models, maybe you wanna try that too. I won't, because it's paid and I don't have the money to pay for it . Anyway, I'll try the bootloader extracting and see how that works, and depending on the output, maybe I'll post a tutorial here.

Def4lt_ said:
Would like to know it too. Passed some days searching the web for a answer, and got none. The only thing I get when scanning the barcode is a number that AFAIK doesn't match any serial nor anything at all in the phone; just a number from what I can tell. Using fastboot oem get_unlock_data doens't work at all too, I just get a "command unknown" error returned from fastboot. Tried different drivers, none seemed to work, and the only ones that did, gave me the barcode and the fastboot error when trying to unlock. A very weird error, this one; fastboot devices work just fine, fastboot getvar all too, so it really doesn't seem like a fastboot or driver issue. My last try was this article (https://www.xda-developers.com/how-to-discover-hidden-fastboot-commands/) to see if I could get a list of the phones OEM commands and figure out how to unlock it. Tried to extract the bootloader from the firmware I downloaded online, using a tool I found on the forum, but no success until now. Will try to root the phone and extract it as it is shown in the tutorial to see if I can get more lucky. I saw somewhere that there's an app called sunshine that was used to unlock some older models, maybe you wanna try that too. I won't, because it's paid and I don't have the money to pay for it . Anyway, I'll try the bootloader extracting and see how that works, and depending on the output, maybe I'll post a tutorial here.
Click to expand...
Click to collapse
Ok so after analysis the barcode just the IMEI associated with my SIM card's slot. (This phone has two SIM card slots.) Nothing interesting about it, I think.
Also it seems that Motorola does not support unlocking this bootloader as it does for other phones; in fact "motorola-global-portal.custhelp.com/app/standalone/bootloader/unlock-your-device-a" is just a hub for any phone listed at "support.motorola.com/us/en/solution/MS87215", and this one is not on the list. I am not aware of any way to unlock the bootloader in these circumstances.
Please let me / us know if you are more successful than me. For now I will consider this phone not rootable via this method.
PS: The furthest I've been: `fastboot oem get_unlock_data` returns a blank line as if the mobile was working. No error message or anything.
PPS: What do you mean by "extracting the bootloader"? What rooting method is extracting the bootloader part of?

The official list of devices that can be unlocked has never been complete.
Usually all moto models can be unlocked, except Carrier branded devices or those on Amazon software channel.
Those getting the barcode screen, is that from
Pressing the volume down button and power on, or
adb reboot bootloader
?
Sent from my ali using XDA Labs

Nycticorax said:
Ok so after analysis the barcode just the IMEI associated with my SIM card's slot. (This phone has two SIM card slots.) Nothing interesting about it, I think.
Also it seems that Motorola does not support unlocking this bootloader as it does for other phones; in fact "motorola-global-portal.custhelp.com/app/standalone/bootloader/unlock-your-device-a" is just a hub for any phone listed at "support.motorola.com/us/en/solution/MS87215", and this one is not on the list. I am not aware of any way to unlock the bootloader in these circumstances.
Please let me / us know if you are more successful than me. For now I will consider this phone not rootable via this method.
PS: The furthest I've been: `fastboot oem get_unlock_data` returns a blank line as if the mobile was working. No error message or anything.
PPS: What do you mean by "extracting the bootloader"? What rooting method is extracting the bootloader part of?
Click to expand...
Click to collapse
That's weird. My barcode number doesn't seem to match any numbers at all, serial, IMEI, nothing. I'll double check it to see if I have missed something. Never got this blank line, would be happy if you shared how you achieved it, maybe there could be some insight I can get from the process. Answering the question about the bootloader, the extraction isn't a part of a rooting method, it's only something I'm trying in order to get the list of oem fastboot commands of the phone. Those are manufacturer-specific, aren't listed anywhere, and differ from model to model. The method I'm using is the one from the article I pointed in my previous answer. Anyway, if it takes me anywhere, I'll bring an update about it with details.
---------- Post added at 23:36 ---------- Previous post was at 23:04 ----------
sd_shadow said:
The official list of devices that can be unlocked has never been complete.
Usually all moto models can be unlocked, except Carrier branded devices or those on Amazon software channel.
Those getting the barcode screen, is that from
Pressing the volume down button and power on, or
adb reboot bootloader
?
Sent from my ali using XDA Labs
Click to expand...
Click to collapse
The barcode is from entering the bootloader. Any method that gets you there shows it. At first I thought it was a driver-related bug, but after some experimentation it seems like whenever the device is recognized by fastboot, it shows this barcode; So it appears to be a bootloader-related thing (I never saw nothing like it, so just guessing for now). Also tried the method from the Motorola website, and I really wish it had worked as expected, but what it seems to me is that MediaTek devices are a pain in the ass in general for this kind of thing. The device doesn't recognizes the oem commands sent through fastboot as valid (And yes, OEM Unlocking is properly enabled under Developer Settings). Here's a screenshot from a powershell session showing the results of trying the commands. Notice how the device is correctly recognized by both adb and fastboot, only the unlocking commands doesn't work: https://pasteboard.co/JnW4cvK.png

sd_shadow said:
The official list of devices that can be unlocked has never been complete.
Usually all moto models can be unlocked, except Carrier branded devices or those on Amazon software channel.
Those getting the barcode screen, is that from
Pressing the volume down button and power on, or
adb reboot bootloader
?
Sent from my ali using XDA Labs
Click to expand...
Click to collapse
In my case the barcode shows up whenever I reach fastboot, whether via booting with [vol up + power] and then selecting fastboot, or via adb reboot bootloader. I've tried several barcode recognition apps and 2 out of 3 confirm it's my IMEI.

Nycticorax said:
In my case the barcode shows up whenever I reach fastboot, whether via booting with [vol up + power] and then selecting fastboot, or via adb reboot bootloader. I've tried several barcode recognition apps and 2 out of 3 confirm it's my IMEI.
Click to expand...
Click to collapse
Did you try
Code:
fastboot flashing unlock_critical
according to this thread... it is for e6 plus. May be it works with e6 play.
https://old.reddit.com/r/androidroot/comments/f6c5k5/unlock_bootloader_moto_e6_plus/fupyalw/

No,
Code:
fastboot flashing unlock critical
does not work. And no, we shouldn't assume that a method meant for the e6 plus works for the e6 play.

Phone in red state not able to change settings
I have struggled with the same problems as above. I am not able to get into the developer mode as I only have access to the recovery screen. Anybody who knows how to do that from the recovery screen - perhaps using terminal?
I have been able to enter into the phone by adb sideload filename.zip and the phone acknowledged connection, but the upload failed, probably due to I am not able to unlock the phone from the red state/Android Recovery. It is running bali-reteu/bali9/POAS29.550-81-1/

glensbo said:
I have struggled with the same problems as above. I am not able to get into the developer mode as I only have access to the recovery screen. Anybody who knows how to do that from the recovery screen - perhaps using terminal?
I have been able to enter into the phone by adb sideload filename.zip and the phone acknowledged connection, but the upload failed, probably due to I am not able to unlock the phone from the red state/Android Recovery. It is running bali-reteu/bali9/POAS29.550-81-1/
Click to expand...
Click to collapse
It is not clear to me what you did exactly. The step where we -- the others participants to this post and I -- are stuck is [2] here below:
boot to fastboot by running `adb reboot bootloader` from a command line on a connected and turned on device
get the OEM unlock code by doing `fastboot oem get_unlock_data` from a connected device under the fastboot interface
exchange the unlock code on the motorola support site and input that code to confirm bootloader unlock

glensbo said:
I have struggled with the same problems as above. I am not able to get into the developer mode as I only have access to the recovery screen. Anybody who knows how to do that from the recovery screen - perhaps using terminal?
I have been able to enter into the phone by adb sideload filename.zip and the phone acknowledged connection, but the upload failed, probably due to I am not able to unlock the phone from the red state/Android Recovery. It is running bali-reteu/bali9/POAS29.550-81-1/
Click to expand...
Click to collapse
Got a little further as the code:
#fastboot flash unlock_critical Filename.zip#
the phone replied - Transferring and Transmission OK .... time etc
But I got an error sadly to say:
Failed (remote: not allowed in locked state) so I'm back to basics as I cannot open the state from the recovery mode (as of yet)

glensbo said:
Got a little further as the code:
#fastboot flash unlock_critical Filename.zip#
the phone replied - Transferring and Transmission OK .... time etc
But I got an error sadly to say:
Failed (remote: not allowed in locked state) so I'm back to basics as I cannot open the state from the recovery mode (as of yet)
Click to expand...
Click to collapse
Okay, I would like to be positive and call that a progress but the whole point of steps (2-3) is to have it unlocked so that you can proceed to root to flashing it the way you're trying to.
So I am pretty pessimistic on that one. To me it looks like a case of a cheap phone a company has no real urge to make easy to unlock.

Nycticorax said:
It is not clear to me what you did exactly. The step where we -- the others participants to this post and I -- are stuck is [2] here below:
boot to fastboot by running `adb reboot bootloader` from a command line on a connected and turned on device
get the OEM unlock code by doing `fastboot oem get_unlock_data` from a connected device under the fastboot interface
exchange the unlock code on the motorola support site and input that code to confirm bootloader unlock
Click to expand...
Click to collapse
Sorry got carried away finding a group dealing with the same problem as I have. And not skimming but reading the text I can confirm that I am stuck at the same place. Sorry for the interruption. I will revert if/when I have something new.

glensbo said:
Sorry got carried away finding a group dealing with the same problem as I have. And not skimming but reading the text I can confirm that I am stuck at the same place. Sorry for the interruption. I will revert if/when I have something new.
Click to expand...
Click to collapse
It's okay. I hope one of us can find something useful. Let Root, the God of Hacks, send His best love waves to you guys

wow No Help

Biniesuschristos said:
wow No Help
Click to expand...
Click to collapse
Just curious do you know what software Channel your phone is on?
The software Channel might be listed in
Settings/ about phone.
Or try
Code:
fastboot getvar all
While in fastboot mode
ro.carrier = Software Channel
Sent from my ocean using XDA Labs

You didn't ask me but perhaps it might help you help us:
Code:
reteu
for me.

I'm don't actually know anything regarding rooting mobile devices but i'm going to post some of my experience thinking it might help someone who actually knows what to do.
I've been having the same issue while trying to unlock the bootloader.
As it seems all of the fastboot commands are working fine except the OEM ones which is strange considering that i'm sure i toggled the OEM Unlock on the dev. options, just like some members commented already.
Regarding the barcode it shows as soon as i connect the device via USB in Fastboot mode, and it shows up when i use "adb reboot bootloader" too, but it wasn't showing before i updated the USB Drives so i could find the device via "fasboot devices" (the phone wasn't showing before i did it).

pontiacus said:
I'm don't actually know anything regarding rooting mobile devices but i'm going to post some of my experience thinking it might help someone who actually knows what to do.
I've been having the same issue while trying to unlock the bootloader.
As it seems all of the fastboot commands are working fine except the OEM ones which is strange considering that i'm sure i toggled the OEM Unlock on the dev. options, just like some members commented already.
Regarding the barcode it shows as soon as i connect the device via USB in Fastboot mode, and it shows up when i use "adb reboot bootloader" too, but it wasn't showing before i updated the USB Drives so i could find the device via "fasboot devices" (the phone wasn't showing before i did it).
Click to expand...
Click to collapse
Windows 10?
Sent from my ocean using XDA Labs

@sd_shadow: Do you think it looks like a bootloader you could unlock?