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Help! Phone stuck at boot screen, power button only restarts phone!!

UPDATE:
OK I'M BACK INTO RECOVERY.
Now can I erase the bootloader and everything and reload all of it without having the phone unlocked?
When I try and do "fastboot oem unlock" it comes back with an error and says "I Must have OEM Unlocked in Developer Options. That's great, but I can't get the phone to boot into android so what should I do at this point?
I don't want to try and erase everything and reload it just to find out i've seriously messed it up at this point, even though the silly thing doesn't load anyways.
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so I received a new Nexus 6 device from T-Mobile for my girlfriend.
In our area unfortunately Wi-Fi calling is a must, so she went ahead and did both of the OTA updates. After doing the second update the phone was stuck optimizing apps, and then the screen wouldn't work...
So I then hooked the phone up to the PC and through ADB did the following commands
fastboot erase userdata
fastboot erase cache
That was supposedly the commands I had found on the internet to go ahead and factory reset the phone.
Now the phone is stuck at the balls swirling and it won't stop. Try and hold the power button down and the phone just restarts itself, won't shut down so I can't even get back into the recovery.
I tried to first load up a factory image before doing something silly like that but when I tried to run the command "fasboot oem unlock" it says I need to enable developer options in Android... which I couldn't get to anyways...
Can someone please help with this issue. Her old phone got stolen and now she has this one which is completely messed up.
Thank you for anyone who can help me!

none
You have to hold power and down on the bottom button, or since you have adb, you can do "adb reboot recovery". Push volume down first then power. After that you can enable MTP and toss a rom on the phone. Do a complete wipe with the exception of the internal storage ( I did storage one time accidentally, yuk) flash a ROM and you should be good

I can't even turn off the device at this point.... It is just stuck at the balls spinning and won't go any further.
When trying to shut the phone off the power button just restarts the phone, doesn't shut it down. Not sure what is going on.....

jwleonhart said:
I can't even turn off the device at this point.... It is just stuck at the balls spinning and won't go any further.
When trying to shut the phone off the power button just restarts the phone, doesn't shut it down. Not sure what is going on.....
Click to expand...
Click to collapse
It should shut down if hold the power button long enough. Takes like 20 seconds or so.

OK I'M BACK INTO RECOVERY.
Now can I erase the bootloader and everything and reload all of it without having the phone unlocked?
When I try and do "fastboot oem unlock" it comes back with an error and says "I Must have OEM Unlocked in Developer Options. That's great, but I can't get the phone to boot into android so what should I do at this point?
I don't want to try and erase everything and reload it just to find out i've seriously messed it up at this point, even though the silly thing doesn't load anyways.

jwleonhart said:
OK I'M BACK INTO RECOVERY.
Now can I erase the bootloader and everything and reload all of it without having the phone unlocked?
When I try and do "fastboot oem unlock" it comes back with an error and says "I Must have OEM Unlocked in Developer Options. That's great, but I can't get the phone to boot into android so what should I do at this point?
I don't want to try and erase everything and reload it just to find out i've seriously messed it up at this point, even though the silly thing doesn't load anyways.
Click to expand...
Click to collapse
As far as I know with stock recovery about all you can do is try to format cache and try to factory reset again. Otherwise will have to take back to T-Mobile and RMA. Make them update it. Lot of OTA updates have been failing.

I'm just curious to know if there is someway. Maybe I can force TWRP recovery or something like that on the phone by at least getting in the bootloader... There is a fix for bricking if it is like that.
Why the bootloader just doesn't come unlocked I will not understand. It would prevent motorola from having a heap of useless devices, as i'm sure probably even motorola themselves cannot fix the device.
Seems like a whole pile of sh*t if you ask me.
Anyone have any ideas? Worst part is T-Mobile won't ship a phone over the weekend either, so thats just 3 more days without a phone which is just wonderful.

jwleonhart said:
I'm just curious to know if there is someway. Maybe I can force TWRP recovery or something like that on the phone by at least getting in the bootloader... There is a fix for bricking if it is like that.
Why the bootloader just doesn't come unlocked I will not understand. It would prevent motorola from having a heap of useless devices, as i'm sure probably even motorola themselves cannot fix the device.
Seems like a whole pile of sh*t if you ask me.
Anyone have any ideas? Worst part is T-Mobile won't ship a phone over the weekend either, so thats just 3 more days without a phone which is just wonderful.
Click to expand...
Click to collapse
There is no way to flash a recovery without the bootloader unlocked. On these devices it is best to unlock bootloader first thing before trying to update so have some control if things go bad. Moto has the ability to reflash them like J-Tag. TMobile store may replace it.

Messed up part about T-Mobile is the fact this was an exchange for a stolen phone. They actually waived the insurance fee of $175 and the tax on the phone... which was extremely nice of them since I still owed about $350 on the LG G3 my girlfriend had.
So since the exchange was done over the phone or I should say since the new handset would bought over the phone the store won't replace it... it's weird they operate that way because the store should be able to replace anything that is sold via phone or internet and vice versa.

jwleonhart said:
Messed up part about T-Mobile is the fact this was an exchange for a stolen phone. They actually waived the insurance fee of $175 and the tax on the phone... which was extremely nice of them since I still owed about $350 on the LG G3 my girlfriend had.
So since the exchange was done over the phone or I should say since the new handset would bought over the phone the store won't replace it... it's weird they operate that way because the store should be able to replace anything that is sold via phone or internet and vice versa.
Click to expand...
Click to collapse
Yea. It a bad situation. We have seen a lot of them choke on the OTA flash. Best to unlock upfront and fastboot the updated factory image. You are always safe once it is unlocked.

Still begs the question as to why they don't just unlock the bootloader from the factory to avoid all this crap. I mean imagine how much money and time they would save if they just did it? I completely forgot about unlocking the bootloader even because I figured hey just OTA it and be done.... remember it's my girlfriend so I wasn't going to put some ROM on there that might have something broken or whatever... can't believe this **** though.

jwleonhart said:
Still begs the question as to why they don't just unlock the bootloader from the factory to avoid all this crap. I mean imagine how much money and time they would save if they just did it? I completely forgot about unlocking the bootloader even because I figured hey just OTA it and be done.... remember it's my girlfriend so I wasn't going to put some ROM on there that might have something broken or whatever... can't believe this **** though.
Click to expand...
Click to collapse
I understand. They look at unlocked bootloader as a security problem. It even tells you it disabled security when you flip the unlock switch. From the many OTAs we have seen brick it is best to just unlock even if running stock. Once it is up and running can always relock. Do not relock if have custom recovery or kernel tho. It will more than likely bootloop. I tried it for grins but made sure the unlock option was enabled and was able to unlock and reflash. Many have flashed new software and relocked before first boot to find out it bootloops and can't unlock again. Best to have TWRP so that if is locked have a adb/MTP option. We pretty much discourage OTA. I haven't tried but have seen a post that says must be locked to OTA. If that is the case you always have the chance of a bad OTA flash and end up same place you are now. With TWRP there are also OTA files that have been converted to flashable zip and can be flashed in recovery.

Need help unlocking the phone (HCU Client etc)

Hey there.
So the other day I bought a broken Huawei P9 for really cheap. I repaired it and now that it boots, it is locked by the previous owner (by 'locked' I mean it has a pin code/fingerprint). They guy I bought it from claims that he found it in a store. So no one knows the pin code to unlock it.
I tried to wipe everything by accessing the recovery. In the recovery, there is the option to download and check the recovery but when I select it, I get a fail message. Bootloader is locked I believe. So what can I do?
I downloaded HCU-Client but the phone wont be detected by the software. I installed HiSuite for the drivers. Is there anything I can do to wipe the phone or at least make HCU client recognise it?
Thanks in advance

Bought phone from ebay, now registration wizard won't let me pass

So I bought this phone from eBay, like many before it. But this time it came with a twist: when I booted the phone, initial setup ran and all wend fine until I got to the register Google account screen.
There, the phone says: "This phone was reset. To continue, sign in with a Google Account that was previously synced on this device".
No matter what account I use, I always get a Toast message saying "Unable to sign in to device due to a unknown error. Please try another account or try to sign in again after 24 hours.".
I'm guessing this is some kind of theft protection where entering a previously synced account "proves" that you're the legit owner. The authorised service here told me that I need some kind of proof that I'm the legit owner and surely enough the eBay seller has issued no invoice containing the phone's IMEI (or any similar document).
Anyway, here I am with this gorgeous phone on my hands which is little more than a brick due to this.
Is there any way I could get it to work again? Returning it will just generate more costs for me and I'd like to avoid that.
I've seen guides on youtube where they managed to bypass this security measure, but both methods I've seen failed for me. I guess the version running on my phone is just too recent and plugged all the holes.
Do I have any way of downgrading the software at least? Note that this is a fully locked phone and I can't even start TWRP from fastboot.
Anything else?
Edit: Now that I'm re-reading this post, it occurred to me that there's very little chance that this phone wouldn't be a stolen one. Had it not been, the seller would easily issue me an invoice.
Leaving this post only because my searching hasn't turned up anything on XDA. Probably also reporting the guy on eBay.

velis74 said:
So I bought this phone from eBay, like many before it. But this time it came with a twist: when I booted the phone, initial setup ran and all wend fine until I got to the register Google account screen.
There, the phone says: "This phone was reset. To continue, sign in with a Google Account that was previously synced on this device".
No matter what account I use, I always get a Toast message saying "Unable to sign in to device due to a unknown error. Please try another account or try to sign in again after 24 hours.".
I'm guessing this is some kind of theft protection where entering a previously synced account "proves" that you're the legit owner. The authorised service here told me that I need some kind of proof that I'm the legit owner and surely enough the eBay seller has issued no invoice containing the phone's IMEI (or any similar document).
Anyway, here I am with this gorgeous phone on my hands which is little more than a brick due to this.
Is there any way I could get it to work again? Returning it will just generate more costs for me and I'd like to avoid that.
I've seen guides on youtube where they managed to bypass this security measure, but both methods I've seen failed for me. I guess the version running on my phone is just too recent and plugged all the holes.
Do I have any way of downgrading the software at least? Note that this is a fully locked phone and I can't even start TWRP from fastboot.
Anything else?
Edit: Now that I'm re-reading this post, it occurred to me that there's very little chance that this phone wouldn't be a stolen one. Had it not been, the seller would easily issue me an invoice.
Leaving this post only because my searching hasn't turned up anything on XDA. Probably also reporting the guy on eBay.
Click to expand...
Click to collapse
From the Settings / About, what is exact (full) build name/number?
Generally, if you are on Nougat then IMO, rolling back to MM should completely reset your phone.
You cannot flash TWRP without unlocking Bootloader. But that will not help much for resetting Google protection.
Btw, enable Developer's menu, does it allow you to unlock FRP/OEM Unlocking - in that case you will be able to reset all from EMUI recovery.

zgfg said:
From the Settings / About, what is exact (full) build name/number?
Generally, if you are on Nougat then IMO, rolling back to MM should completely reset your phone.
You cannot flash TWRP without unlocking Bootloader. But that will not help much for resetting Google protection.
Btw, enable Developer's menu, does it allow you to unlock FRP/OEM Unlocking - in that case you will be able to reset all from EMUI recovery.
Click to expand...
Click to collapse
He can't get passed the setup screen

Twisted Prime said:
He can't get passed the setup screen
Click to expand...
Click to collapse
- Boot to Recovery (switch off, press and keep pressing Vol+ and Pow). Does it boot to stock Recovery and does it allow there to Factory reset (it should but if FRP was unlocked)
- Boot to Fastboot (switch off, connect by USB to PC, press Vol- and Pow), do you see Phone (Bootloader) and FRP locked or unlocked?

zgfg said:
- Boot to Recovery (switch off, press and keep pressing Vol+ and Pow). Does it boot to stock Recovery and does it allow there to Factory reset (it should but if FRP was unlocked)
- Boot to Fastboot (switch off, connect by USB to PC, press Vol- and Pow), do you see Phone (Bootloader) and FRP locked or unlocked?
Click to expand...
Click to collapse
It is stock recovery. I don't recall the option for factory reset. In fact there's no options at all, save for reboots.
Fastboot says everything is locked as it should be.
Don't know how to downgrade to MM.

velis74 said:
It is stock recovery. I don't recall the option for factory reset. In fact there's no options at all, save for reboots.
Fastboot says everything is locked as it should be.
Don't know how to downgrade to MM.
Click to expand...
Click to collapse
Rollback instructions are here
https://forum.xda-developers.com/showpost.php?p=72153575&postcount=2
But not sure would it allow you to setup.
That is Factory Reset Protection (FRP/OEM Unlocking) - if it was unlocked you would be allowed to reset from recovery.
You can ask seller - maybe he can login to his Google account and remotely remove Google account from the sold phone.
Or you can try DC Unlocker, not sure would it work
https://www.dc-unlocker.com/DC-Phoenix-flash-repair-tutorial

Well, DC unlocker ultimately worked, but not before buying a wrong package, having to ask tech support, etc, etc. Not to mention the guy really has no patience for people who don't have his level of understanding of the subject. Why does he do it then if he hates the whole thing so much?

velis74 said:
Well, DC unlocker ultimately worked, but not before buying a wrong package, having to ask tech support, etc, etc. Not to mention the guy really has no patience for people who don't have his level of understanding of the subject. Why does he do it then if he hates the whole thing so much?
Click to expand...
Click to collapse
So did you use DC Unlocker to unlock Bootloader or DC Phoenix to reinstall the phone?

zgfg said:
So did you use DC Unlocker to unlock Bootloader or DC Phoenix to reinstall the phone?
Click to expand...
Click to collapse
DC unlocker. I wanted minimal impact on the OS as the phone is for my daughter and she doesn't do custom ROMs et al

velis74 said:
DC unlocker. I wanted minimal impact on the OS as the phone is for my daughter and she doesn't do custom ROMs et al
Click to expand...
Click to collapse
Sorry for bothering but I'm interested now - when Bootloader was unlocked (and FRP too), were you just able to pass setup or you needed to do Factory reset from Recovery or how did you get the stock ROM working for you

Final resolution: the seller sent me an invoice. I guess that means that the phone wasn't stolen after all since they can only expect that this will be entered into Huawei databases.
zgfg said:
Sorry for bothering but I'm interested now - when Bootloader was unlocked (and FRP too), were you just able to pass setup or you needed to do Factory reset from Recovery or how did you get the stock ROM working for you
Click to expand...
Click to collapse
The procedure was thus:
1. unlocker unlocked the FRP
2. phone rebooted into a factory reset (low level) mode - it specifically said "low level"
3. phone booted into normal Android where the FRP protection was no longer active. On screen where it previously demanded a previous Google account it now only demanded A (any) Google account as I'm used to from all the other phones I ever bought.

Sorry old post

Soft Brick/Bootloop Fix Solutions?

Good day all. Long time lurker of these forums, and I am officially throwing in the towel on my amateur attempts to update my P20 Pro (CLT-L29 C636) from Android 8 to something newer. I've managed to soft brick the thing, getting stuck in a boot loop. I can get to fastboot, and I can (sometimes) get it to enter dload mode with an OTG cable and a thumb drive. I messed something up early on in the process and I am completely unable to go any further. Dload gets to 5% then fails every time, with every thumb drive I've used.
I am willing to accept that I just don't have the technical ability to take this journey any further. Being that I live in the US (Western New York), Huawei lists no official repair centers in the states. Are there any trusted 3rd party repair services I could send my phone to and have an expert attempt to repair the software? At this point it's been bootlooping so long the Huawei logo is ghosted onto the AMOLED screen. I would love to have this phone operational again.
Any thoughts I would greatly appreciate it!

Hold Both Vol + Power until Emergency Rescue pops up.
After that, restore Stock, unlock Bootloader, install any android 10/11/12 GSI u want.

Tried that. It's stuck in bootloop and only occasionally responds to boot prompts. On the couple of times it got past dload failed and prompted me with invalid install and offered to boot to Emergency Recovery, it fails to load the recovery dialog and drops back into a boot loop.
I promise, I have been back and forth with attempts on this phone for four months, and if I thought there was any new surface level tip or trick I haven't tried, I would still be searching. I feel like it's at a point where only specialized software or a physical test point, or something else beyond my technical ability will fix this phone.
I do appreciate the suggestion, though.

Unlocked Phone? So it *might* be possible to recover i imagine if u get twrp running, might need some dirty work, but not impossible.
Edith did forget to mention; Can u see ur Phone via adb/fastboot on your PC?

aLcaTr4z said:
Unlocked Phone? So it *might* be possible to recover i imagine if u get twrp running, might need some dirty work, but not impossible.
Edith did forget to mention; Can u see ur Phone via adb/fastboot on your PC?
Click to expand...
Click to collapse
Sorry if I sent the wrong impression. The bootloader is still locked. It is only carrier unlocked.
I can locate it on DC-Unlocker on fastboot but it won't let me load any files to it.

With locked BL is not much hope left i guess. Hisuite Recovery fails too i imagine?

aLcaTr4z said:
With locked BL is not much hope left i guess. Hisuite Recovery fails too i imagine?
Click to expand...
Click to collapse
Oh yeah. HiSuite recovery states that this model isn't compatible with eRecovery and to take the phone to a service center.

XQ-AT52 Device is corrupt and cannot be trusted -Help-

I was using the Sony conpanion app to update my phone when we had a power cut mid update.
Now the phone refuses to boot, only message I get is "your device is corrupt and cannot be trusted and cannot boot"
It then restarts after 5 seconds and is now stuck in this constant loop.
The Sony companion app is now useless as even though it can detect the phone it can't repair it. It throws up and error about it not liking the model oh my phone for some reason.
Thinking my phone might be 100% dead I installed Sony's flashing tool Emma, and thanfully it can detect the phone and thinks it is a XQ-AT51 since I flashed UK/EU androind 11 on it before.
I am really not sure how I can even try and fix this phone, I can't flash it because OEM unlocking was not enabled along with USB-Debugging, (why when its a normal update) and I can't get the recovery menu to show up at all anymore.
If anyone has any idea on how I may salvage this id like to know since most if not all guides I find are out of date or require me to be able to enable OEM unlocking or boot into the phone in the first place. If all else fails I am just tempted to buy a used phone with a broken screen from Ebay and just swap out the mainboard...I looses 12GB ram to 8GB but its better than having a brick.

Currently playing 12.13GSI, so seeing your post is too slow, follow the steps below to restore the original factory!
1. https://forum.xda-developers.com/t/tool-xperifirm-xperia-firmware-downloader-v5-6-5.2834142/
Follow the guide~
2. https://forum.xda-developers.com/t/tool-newflasher-xperia-command-line-flasher.3619426/page-83
Follow the guide~
Hope all is well with your phone!