Database Develop

[Q] Can't boot into android, or flash anything

Hi!
Today I updated my Nexus 6 to 5.1 and something is went wrong...
When i try to boot my device into android, i Can't because its shows a dead android with a red triangle
(this is the screen where i can go into the recovery menu by pressing power on+ vol up)
i tried to flash the rom again, but the bootloader is locked because i relocked it after the 5.1 rom flash..
and i cant unlock it again because i cant boot into android to check the OEM unlock box.
i also tried wipe data, factory reset option in the recovery menu... thanks a lot for any suggestions
(sorry for my english)

Welcome to the club!

necroside007 said:
Hi!
Today I updated my Nexus 6 to 5.1 and something is went wrong...
When i try to boot my device into android, i Can't because its shows a dead android with a red triangle
(this is the screen where i can go into the recovery menu by pressing power on+ vol up)
i tried to flash the rom again, but the bootloader is locked because i relocked it after the 5.1 rom flash..
and i cant unlock it again because i cant boot into android to check the OEM unlock box.
i also tried wipe data, factory reset option in the recovery menu... thanks a lot for any suggestions
(sorry for my english)
Click to expand...
Click to collapse
Why in the world would you relock the bootloader? Against commonsense it would seem. Also, there are threads on here dealing with the update and warning against relocking the boot loader. Those threads also describe efforts to recover from the situation.

wtherrell said:
Why in the world would you relock the bootloader? Against commonsense it would seem. Also, there are threads on here dealing with the update and warning against relocking the boot loader. Those threads also describe efforts to recover from the situation.
Click to expand...
Click to collapse
I haven't seen anyone warning against relocking the bootloader - in fact, I see many instruction sets where relocking the bootloader is the final step, before the first reboot. Most are for returning to stock. Go ahead and use your hindsight though, you sound so smart.
And yeah, there are plenty of efforts to recover from the situation, but I'm yet to see anyone do so successfully.

necroside007 said:
Hi!
Today I updated my Nexus 6 to 5.1 and something is went wrong...
When i try to boot my device into android, i Can't because its shows a dead android with a red triangle
(this is the screen where i can go into the recovery menu by pressing power on+ vol up)
i tried to flash the rom again, but the bootloader is locked because i relocked it after the 5.1 rom flash..
and i cant unlock it again because i cant boot into android to check the OEM unlock box.
i also tried wipe data, factory reset option in the recovery menu... thanks a lot for any suggestions
(sorry for my english)
Click to expand...
Click to collapse
freeman_g said:
Welcome to the club!
Click to expand...
Click to collapse
AndrewZorn said:
I haven't seen anyone warning against relocking the bootloader - in fact, I see many instruction sets where relocking the bootloader is the final step, before the first reboot. Most are for returning to stock. Go ahead and use your hindsight though, you sound so smart.
And yeah, there are plenty of efforts to recover from the situation, but I'm yet to see anyone do so successfully.
Click to expand...
Click to collapse
If you want to update to the newest OTA you dont need to lock the bootloader back up. The bootloader can remained unlocked when doing this. Its been posted all over XDA about not having to do this. The only time you may want to relock the bootloader is when selling it to someone or trading it in. Thats it.

AndrewZorn said:
I haven't seen anyone warning against relocking the bootloader - in fact, I see many instruction sets where relocking the bootloader is the final step, before the first reboot. Most are for returning to stock. Go ahead and use your hindsight though, you sound so smart.
And yeah, there are plenty of efforts to recover from the situation, but I'm yet to see anyone do so successfully.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=3053497.

Well...I'm not browsing the XDA every day, i only come here for solutions for my problems....

wtherrell said:
http://forum.xda-developers.com/showthread.php?t=3053497.
Click to expand...
Click to collapse
Yeah, posted this morning. What a warning to everyone who did this before.
And saying not to do something that plenty of people want to do (like, returning to stock) isn't very significant.

necroside007 said:
Well...I'm not browsing the XDA every day, i only come here for solutions for my problems....
Click to expand...
Click to collapse
well not to come off rude but number one rule for xda before u post is search, and as you can tell there are multiple threads on this exact same topic.
---------- Post added at 10:56 AM ---------- Previous post was at 10:51 AM ----------
AndrewZorn said:
Yeah, posted this morning. What a warning to everyone who did this before.
And saying not to do something that plenty of people want to do (like, returning to stock) isn't very significant.
Click to expand...
Click to collapse
returning to stock and relocking the bootloader dont go together. You can return to stock and not lock the bootloader. Locking the bootloader has nothing to do with returning a device back to stock. It returns the device back to factory state if u lock it back up. Locking the device back up only should be used for selling the device, or returning the device for repairs. not for taking a ota.

the_rooter said:
Locking the bootloader has nothing to do with returning a device back to stock. It returns the device back to factory state if u lock it back up. Locking the device back up only should be used for selling the device, or returning the device for repairs. not for taking a ota.
Click to expand...
Click to collapse
Unless I want a secure device.
Unless I worry about warranty/resale in case my device is no longer operable (ie, broken screen, port, or buttons).
Unless I want my device to be stock - actually stock - as sold - which is LOCKED. You're telling me and others there's no downside to an unlocked bootloader. Well, that's wrong, and some people want a locked bootloader.

AndrewZorn said:
Unless I want a secure device.
Unless I worry about warranty/resale in case my device is no longer operable (ie, broken screen, port, or buttons).
Unless I want my device to be stock - actually stock - as sold - which is LOCKED. You're telling me and others there's no downside to an unlocked bootloader. Well, that's wrong, and some people want a locked bootloader.
Click to expand...
Click to collapse
There is no downside to a unlocked bootloader. If i remember correctly a locked bootloader is only for oem to protect for warranty issues nothing to do with security that your describing. A locked bootloader or unlocked bootloader tells the oem that this device was unlocked or locked and will tell the consumer (us) that the warranty was void. Number one rule when taking a device back to OEM for repair is return to stock and lock device like I stated above. Security issues has nothing to do with the bootloader. From my understanding its just for the OEM warranty purposes Only!
Edit: what u described above is the same thing I described. Only need to lock device back up for warranty purposes or reselling. Thats it.

AndrewZorn said:
Unless I want a secure device.
Unless I worry about warranty/resale in case my device is no longer operable (ie, broken screen, port, or buttons).
Unless I want my device to be stock - actually stock - as sold - which is LOCKED. You're telling me and others there's no downside to an unlocked bootloader. Well, that's wrong, and some people want a locked bootloader.
Click to expand...
Click to collapse
I posted the warning because people are not being careful. They are locking the bootloader without even checking it works. I've edited the post to say that. But if you're the sort of person that will be flashiogn a lot, a locked bootloader is not a good thing to have now because if you break recovery and cannot boot your device, you are at present - completely screwed. If you want to be stock, that shouldn't be an issue. Just be careful is all we're saying. ...and I cannot help it if my warning comes after some people have made this mistake. If no one made the mistake, I wouldn't have needed to post a warning. Can of peanuts "May contain nuts"... You know, because you know someone somewhere who was allergic to nuts, ate the nuts.

rootSU said:
I posted the warning because people are not being careful. They are locking the bootloader without even checking it works. I've edited the post to say that. But if you're the sort of person that will be flashiogn a lot, a locked bootloader is not a good thing to have now because if you break recovery and cannot boot your device, you are at present - completely screwed. If you want to be stock, that shouldn't be an issue. Just be careful is all we're saying. ...and I cannot help it if my warning comes after some people have made this mistake. If no one made the mistake, I wouldn't have needed to post a warning. Can of peanuts "May contain nuts"... You know, because you know someone somewhere who was allergic to nuts, ate the nuts.
Click to expand...
Click to collapse
I have nothing against your warning - I'm glad it's there. I was replying to the other guy, saying your the existence of your warning doesn't make everyone with this problem an idiot.
Locking the bootloader without even checking it works - again - I don't often see the "reboot to make sure it works!" step before the final fastboot oem lock. Maybe I've only been reading the lousy guides.
the_rooter said:
There is no downside to a unlocked bootloader. If i remember correctly a locked bootloader is only for oem to protect for warranty issues nothing to do with security that your describing. A locked bootloader or unlocked bootloader tells the oem that this device was unlocked or locked and will tell the consumer (us) that the warranty was void. Number one rule when taking a device back to OEM for repair is return to stock and lock device like I stated above. Security issues has nothing to do with the bootloader. From my understanding its just for the OEM warranty purposes Only!
Edit: what u described above is the same thing I described. Only need to lock device back up for warranty purposes or reselling. Thats it.
Click to expand...
Click to collapse
I thought that an unlocked bootloader allowed someone without 'normal' access to the files on your phone. That's why the bootloader lock/unlock wipes the device.
You're still completely missing my point with the warranty thing. Suppose my phone's unlocked and my screen breaks. Or my USB port stops working. That big unlocked logo under the Google is going to make getting a replacement really difficult.
By saying there's NO downside to unlocking the bootloader for daily use is absurd. I wanted to go back to as-shipped state for daily use, and locked bootloader is part of that. That's a reasonable goal. I don't care if there's something about the bootloader unlocked that you find valuable. I got tired of the tinkering and decided I just wanted my Nexus 6 to be back the way it was - completely.

AndrewZorn said:
I have nothing against your warning - I'm glad it's there. I was replying to the other guy, saying your the existence of your warning doesn't make everyone with this problem an idiot.
Locking the bootloader without even checking it works - again - I don't often see the "reboot to make sure it works!" step before the final fastboot oem lock. Maybe I've only been reading the lousy guides.
Click to expand...
Click to collapse
If guides don't say that at the moment, they definitely should now. I'll look at ours here and ask the OP's to update.

AndrewZorn said:
I have nothing against your warning - I'm glad it's there. I was replying to the other guy, saying your the existence of your warning doesn't make everyone with this problem an idiot.
Locking the bootloader without even checking it works - again - I don't often see the "reboot to make sure it works!" step before the final fastboot oem lock. Maybe I've only been reading the lousy guides.
I thought that an unlocked bootloader allowed someone without 'normal' access to the files on your phone. That's why the bootloader lock/unlock wipes the device.
You're still completely missing my point with the warranty thing. Suppose my phone's unlocked and my screen breaks. Or my USB port stops working. That big unlocked logo under the Google is going to make getting a replacement really difficult.
By saying there's NO downside to unlocking the bootloader for daily use is absurd. I wanted to go back to as-shipped state for daily use, and locked bootloader is part of that. That's a reasonable goal.
Click to expand...
Click to collapse
Root access is for the special files. and also i had the same issues u mentioned above and i always found a way to return a device to stock.
1) broken screen- repaired myself
2) broken usb port - repaired myself
I only take in for warranties if it has to do with something that I cant fix myself. This is a risk that all users take in this hobby.

the_rooter said:
Root access is for the special files. and also i had the same issues u mentioned above and i always found a way to return a device to stock.
1) broken screen- repaired myself
2) broken usb port - repaired myself
I only take in for warranties if it has to do with something that I cant fix myself. This is a risk that all users take in this hobby.
Click to expand...
Click to collapse
Alright, so how do I return mine to stock?
Your self-repair solutions are laughable. You're completely missing the point. I'm done arguing this.

AndrewZorn said:
Alright, so how do I return mine to stock?
Your self-repair solutions are laughable. You're completely missing the point. I'm done arguing this.
Click to expand...
Click to collapse
its not laughable. unless u buy an extended warranty the warranty is up after a year so you would have to figure the work yourself. If you are in the boat where u locked it back up and took the ota and bootlooping or whatever. your stuck till there is a solution. if u want to return to stock . Just return to stock but dont lock the bootloader back up, and flash. its that simple.
Edit: we are not arguing. Its just i have my way on repairs and you have yours. its a debate i guess
Edit: this issue has been brought up and is being researched. i was talking about the returning to stock for repairs dont try and put words in my mouth saying i know a fix.

[Q] After Update to 5.1, Re-lock Bootloader?

Due to organizational requirements the bootloader needs to be locked. So, here go the questions:
After flashing factory image (5.1.0 (LMY47E), is it safe to re-lock bootloader?
And when, after the final reboot and before setup?
And, will the command, fastboot oem lock, wipe EVERYTHING off the phone, like fastboot oem unlock does?
And does the Developer options setting, "OEM unlocking", need to be turned on prior to the lock?
Thanks

No one has proven that locking the bootloaders does not cause a "brick". We have seen people lock after 5.1 and get a bootloop. This becomes a brick because they cannot unlock to fix it. We don't know if the update causes the loop or the lock does.

By the way, this was a completely stock Nexus 6 (5.0.1), no root, no apps other than Google. Before the factory image flash, the "OEM Unlocking" setting in Developer Options was persistent during power on/off. Now, with 5.1 the setting turns itself off during power on/off.
So, should I re-lock the bootloader and satisfy organizational requirements and risk a boot loop or proceed unlocked? Kinda feel like a "deer in the headlights" !

clairez said:
By the way, this was a completely stock Nexus 6 (5.0.1), no root, no apps other than Google. Before the factory image flash, the "OEM Unlocking" setting in Developer Options was persistent during power on/off. Now, with 5.1 the setting turns itself off during power on/off.
So, should I re-lock the bootloader and satisfy organizational requirements and risk a boot loop or proceed unlocked? Kinda feel like a "deer in the headlights" !
Click to expand...
Click to collapse
Well its your choice. I recommend not locking it. However, if you do lock it and end up bricked, at least we know its the locking that causes the loop and not the flash but.... Is it worth it?

If your organization is supplying the device ( or the money for the device) you have no business unlocking it. At my organization people are fired for such things.
If they are not compensating you somehow then I don't see how they can make requirements on your device.
Sent from my Nexus 6

And if it is the unlocking/locking that causes the boot loop (hard brick) then any flashing operation that requires unlocking the bootloader will require that the system remain unlocked forever. A penalty that will afflict a portion (large?) of the Nexus 6 community. Was this an issue before 5.0? Makes one wonder if this is by design or accidental.

DebianDog said:
If they are not compensating you somehow then I don't see how they can make requirements on your device.
Click to expand...
Click to collapse
Yes we totally can. If you work for my company and decide you would rather use your own device for corporate email and data, that data is ours. You may use your own device but we will manage it. If it gets stolen, we will wipe it. You will adhere the same policies for corporate owned data as you will with a phone supplied by us. You will have lock screen, you will be unrooted. You will keep your bootloaders locked. Or you can use this sh*tty Nokia.

My hardware, but if I want to utilize it in the organization, then I must abide by their rules.
This post was not meant to be an organizational ethics discussion, just a request for guidance. If anyone can give me input on the original questions, I would greatly appreciate it. Especially the wipe side effect of the lock operation. Do not want to spend a lot of time configuring the device if it will be erased.
Thanks in advance

clairez said:
My hardware, but if I want to utilize it in the organization, then I must abide by their rules.
Click to expand...
Click to collapse
Yep. Absolutely.

rootSU said:
No one has proven that locking the bootloaders does not cause a "brick". We have seen people lock after 5.1 and get a bootloop. This becomes a brick because they cannot unlock to fix it. We don't know if the update causes the loop or the lock does.
Click to expand...
Click to collapse
Just a little thinking out loud here. Wouldn't it be safe to have OEM Unlock checked under dev options, lock the bootloader, if you happen to bootloop OEM Unlock is still checked so you could still unlock? And then upon first boot OEM Unlock would get unchecked.
Sent from my Nexus 6 using XDA Free mobile app

Konfuzion said:
Just a little thinking out loud here. Wouldn't it be safe to have OEM Unlock checked under dev options, lock the bootloader, if you happen to bootloop OEM Unlock is still checked so you could still unlock? And then upon first boot OEM Unlock would get unchecked.
Sent from my Nexus 6 using XDA Free mobile app
Click to expand...
Click to collapse
Safe? No.. The flag resets at boot. Boot loop partially boots and it could be enough to reset the flag "at first boot"
Pretty much everything is an unknown here. We do t even know where the "enable OEM unlock" flag is set. Is it in the BL or one of the various partitions? What effect would setting the flag and wiping the OS have? We just don't know.

rootSU said:
Safe? No.. The flag resets at boot. Boot loop partially boots and it could be enough to reset the flag "at first boot"
Pretty much everything is an unknown here. We do t even know where the "enable OEM unlock" flag is set. Is it in the BL or one of the various partitions? What effect would setting the flag and wiping the OS have? We just don't know.
Click to expand...
Click to collapse
Good point. That's why more heads are better than one. I still think my theory would work, but yet I wouldn't be willing to risk my N6 on it, wouldn't suggest others do either.
Sent from my Nexus 6 using XDA Free mobile app

clairez said:
Due to organizational requirements the bootloader needs to be locked. So, here go the questions:
After flashing factory image (5.1.0 (LMY47E), is it safe to re-lock bootloader?
And when, after the final reboot and before setup?
And, will the command, fastboot oem lock, wipe EVERYTHING off the phone, like fastboot oem unlock does?
And does the Developer options setting, "OEM unlocking", need to be turned on prior to the lock?
Thanks
Click to expand...
Click to collapse
1. Unsure at this point. If everything is stock (including recovery), I would suspect that it would be OK, but it has not been verified yet.
2. After you flash the bootloader, radio, boot, system and recovery images, and format data and cache, then would be the time to re-lock and then boot into Android.
3. Yes. But based on what I gather, the process of wiping on an N6 (when unlocking or locking the bootloader) is done via the stock recovery. So, if you have a custom recovery when you lock, I suspect that it will give you a boot loop.
4. I don't know.

Update - Success
I re-locked the bootloader and the device is working normally, no boot loop. I will continue testing over the next few days and then share what I learned.
Thanks for the help ...

Upgraded to 5.1, booted system OK
rechecked the OEM unlock option and rebooted to fastboot and locked bootloader.
No bootloop or other issues noticed.
Hope this helps.

clairez said:
I re-locked the bootloader and the device is working normally, no boot loop. I will continue testing over the next few days and then share what I learned.
Thanks for the help ...
Click to expand...
Click to collapse
Interesting. And you were 100% stock?
Perhaps the loop isn't caused by the lock itself then. Good to know, though still people need to be cautious

androiduser2011 said:
Upgraded to 5.1, booted system OK
rechecked the OEM unlock option and rebooted to fastboot and locked bootloader.
No bootloop or other issues noticed.
Hope this helps.
Click to expand...
Click to collapse
A few question, for understanding:
Rooted?
Stock or TWRP recovery?
Encrypted?
Thanks

rootSU said:
No one has proven that locking the bootloaders does not cause a "brick". We have seen people lock after 5.1 and get a bootloop. This becomes a brick because they cannot unlock to fix it. We don't know if the update causes the loop or the lock does.
Click to expand...
Click to collapse
This happened to me literally tonight. I tried to lock the boot loader which was successful, from there the device would start to root into teamwin recovery. So from there I tired to flash a fully stock rom but the bootloader was locked. And then because you need permission from the OS to unlock the bootloader I was stuck. What I did is from the locked bootloader I ran the stock oem flash from a fresh download and check from wugs with the force flash enabled (make sure everything is right) miracles of miracles it worked and came back to me.
I learned my lesson. Never shall my bootloader be relocked unless my phone is out of my possession. I'm spending the rest of the time making sure that nobody can get to my data. I love the phone, but that data is my life.

So basically, we need to confirm that being 100% stock will safely allow the relocking of the bootloader on 5.1 per official instructions from Google. If it can be determined that having TWRP recovery installed is the cause of bricks then users can be instructed to be sure stock recovery is installed before relocking. My own thoughts are that this is a bug of sorts with the new security features of lollipop and I'm sure the talented folks here will get it figured out. I'm 100% stock on LMY47D that I sideloaded. Not sure I can afford to risk my 6 but I offer any assistance I can to help get this figured out.

Evolution_Freak said:
So basically, we need to confirm that being 100% stock will safely allow the relocking of the bootloader on 5.1
Click to expand...
Click to collapse
Some of the "bricks" happened after fully flashing stock, i.e they had stock recovery. They had a locked bootloader, an OS that didn't boot and a recovery that couldn't flash anything. If they had TWRP installed, they could format data and flash a rom.zip no problem.

Relock Droid Turbo Bootloader

What's the process for going about it? I did do a search, but didn't find anything useful. Any help would be appreciated.
Reasoning: I'm going to be upgrading and turning in the phone, so it's time to put it back to factory.

mlw4428 said:
What's the process for going about it? I did do a search, but didn't find anything useful. Any help would be appreciated.
Reasoning: I'm going to be upgrading and turning in the phone, so it's time to put it back to factory.
Click to expand...
Click to collapse
1. Go back to stock everything by following section 0 of this guide: http://forum.xda-developers.com/droid-turbo/general/guide-how-to-unlock-bootloader-install-t3292684
2. While in bootloader mode, use the fastboot command "fastboot oem lock"
If you're turning in the phone to Verizon, this method is okay. However, don't do this if you plan on selling the phone to someone else. If they were to try and unlock the phone again, they would most likely brick it.

According to jcase relocking the bootloader it still shows a modified status code. Your warranty is permanently voided.

Are you on an Edge plan? Otherwise I don't know why you would be returning the phone to upgrade. Also not sure what their rules are on permanently modifying the software of one of these essentially "lease-to-own" devices, so might want to check the terms and conditions if this applies to you. If you are just trading it in for credit toward a new phone, I'd just sell it yourself unlocked and get a lot more for it.
Sent from my XT1254 using Tapatalk

SpyderPride said:
If you are just trading it in for credit toward a new phone, I'd just sell it yourself unlocked and get a lot more for it.
Click to expand...
Click to collapse
A bootloader unlocked, rooted XT1254 would be more valuable to a buyer than one locked down. You've already done all the hard work.

TheSt33v said:
1. Go back to stock everything by following section 0 of this guide: http://forum.xda-developers.com/droid-turbo/general/guide-how-to-unlock-bootloader-install-t3292684
2. While in bootloader mode, use the fastboot command "fastboot oem lock"
If you're turning in the phone to Verizon, this method is okay. However, don't do this if you plan on selling the phone to someone else. If they were to try and unlock the phone again, they would most likely brick it.
Click to expand...
Click to collapse
Heya so I'm in a serious bind.
I skipped your step 1 and locked my bootloader. I have an unlocked bootloader. I recently upgraded through the normal verizon pushed update the marshmallow update. Anyhow. I now want to return the phone for an upgrade and well... I locked the bootloader. Then turn the phone off and turned it back on and it now says locked, but it says failed to validate system image. I then got freaked out and downloaded all the step 1 files and tried to flash the stock rom (which i already had installed!) and that doesn't seem to work. Did I brick my phone? Is there any way to get it working now that it is locked with any kind of android at all?

You're probably fine @droidfun1. You just need to use the marshmallow firmware package instead of the lollipop one. Get it here: https://forum.xda-developers.com/dr...-official-stock-firmware-6-0-1-mcg24-t3531571

Yup, I tried flashing the stock 6.0.1 rom with fastboot on my mac but I got all kinds of fails.
I found a mac compatible command line version of RSDLite and it totally worked! Not sure why fastboot couldn't successfully flash the same stock rom?
Now I just need to remove the bootloader unlocked warning (my phone is now locked status 2), but not sure if I can now that it is locked.
TheSt33v said:
You're probably fine @droidfun1. You just need to use the marshmallow firmware package instead of the lollipop one. Get it here: https://forum.xda-developers.com/dr...-official-stock-firmware-6-0-1-mcg24-t3531571
Click to expand...
Click to collapse

droidfun1 said:
Yup, I tried flashing the stock 6.0.1 rom with fastboot on my mac but I got all kinds of fails.
I found a mac compatible command line version of RSDLite and it totally worked! Not sure why fastboot couldn't successfully flash the same stock rom?
Now I just need to remove the bootloader unlocked warning (my phone is now locked status 2), but not sure if I can now that it is locked.
Click to expand...
Click to collapse
Strange. As far as I understand it, RSDlite just automates fastboot, so even if you're using RSDlite, you're actually using fastboot. Whatever works though.
As for the unlocked bootloader message, see my response to that post you made.

Did I soft brick or hard brick my P4XL?

Eager to try out Android 11, I sideloaded the ota zip of the latest Developer preview on my Pixel 4 XL. I have the Verizon version, so my bootloader is locked and I was unable to get it to unlock. So, I figured the ADB sideload method would be perfect.
Everything went smoothly until after the OTA was installed:
I just get a screen that says "Can't find a valid operating system. Device will not start." -- this screen appears for recovery and rescue mode.
The only thing I do have access to is Fastboot. Device appears when I type in "Fastboot devices", but I'm guessing that it doesn't matter since my bootloader is locked and I can't flash anything?
Google support was no help and just send me the address of a repair shop.
Does anyone know if I'm totally F'd in this situation?
Thanks

Nevermind I'll keep looking

Can you change slots? fastboot --set-active=a
It tells you what slot you are on in the bootloader screen. It won't hurt anything. You can always change it back. It's the only thing I know to try.

You can get a stock image and flash it from the stock recovery; dont recall how that procedure is done but there is a guide floating around here as it comes up every once in a while. Usually a Verizon owner...

Are you able to unlock the bootloader (activated before sideload)? So flash unlock and then the factory Image. If you can't unlock your bootloader you are stuck and best option is to open a warranty case by Google...

Try this - https://pixelrepair.withgoogle.com/
You may need to use a VPN if it says not supported in country. Never used it before but worth exploring.

(HELP) Pixel 5 bootloop after reversion to stock from beta

Hey Everyone,
I'm looking for help. I tried reverting my pixel 5 to stock from beta and am stuck at the boot screen with " your device is corrupt. It cannot be trusted and may not work properly."
I've spent days fiddling with it, and cannot get anywhere with the google repair website because it's saying my bootloader is locked. I don't understand how I purchased it unlocked. Anyway, I cannot get into the settings to unlock the bootloader. It's been a long time since I've been a tinkerer but I do have all the software downloaded to do so. I cannot get my PC to recognize the phone in the command prompt window to try and sideload a software install.
Has this happened to anyone and is there a solution out there somewhere?

Sean Hicks said:
Hey Everyone,
I'm looking for help. I tried reverting my pixel 5 to stock from beta and am stuck at the boot screen with " your device is corrupt. It cannot be trusted and may not work properly."
I've spent days fiddling with it, and cannot get anywhere with the google repair website because it's saying my bootloader is locked. I don't understand how I purchased it unlocked. Anyway, I cannot get into the settings to unlock the bootloader. It's been a long time since I've been a tinkerer but I do have all the software downloaded to do so. I cannot get my PC to recognize the phone in the command prompt window to try and sideload a software install.
Has this happened to anyone and is there a solution out there somewhere?
Click to expand...
Click to collapse
Buying it "unlocked" means you bought it free of a carrier, such as Verizon, who lock the bootloader, and can't be unlocked.
But you still need to unlock the bootloader, it comes locked, for security reasons. So if you never unlocked it, it's locked.
I haven't installed beta 12 yet.
Do you have the latest SDK tools? (adb, fastboot, etc)
I was under the impression though, that you can't downgrade with a locked bootloader. But not sure.

Sean Hicks said:
Hey Everyone,
I'm looking for help. I tried reverting my pixel 5 to stock from beta and am stuck at the boot screen with " your device is corrupt. It cannot be trusted and may not work properly."
I've spent days fiddling with it, and cannot get anywhere with the google repair website because it's saying my bootloader is locked. I don't understand how I purchased it unlocked. Anyway, I cannot get into the settings to unlock the bootloader. It's been a long time since I've been a tinkerer but I do have all the software downloaded to do so. I cannot get my PC to recognize the phone in the command prompt window to try and sideload a software install.
Has this happened to anyone and is there a solution out there somewhere?
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Click to collapse
This probably isn't of any help now, but going forward, it may be. In Developer options, you can enable 'OEM unlocking'. As you can see now, it may well be a very good idea to enable that **before** you start messing with the phone, because if something does go wrong (as it has for you), then you can (hopefully) still get to fastboot and do 'fastboot flashing unlock'.
So, knowing this, you may want to keep an eye out for some tool or something that will allow you to possibly turn on oem unlocking (because your device won't boot).
Another thing to try is switching slots and see if the other slot boots? If you can get to fastboot try; fastboot --set-active=(a or b), then fastboot reboot. (If you don't know which slot is active, do 'fastboot getvar all', in the output it will tell you which is current.
cheers

Your bootloader being locked should not affect your ability to restore factory images/OTAs from Google. They are signed by Google and will pass the signature checks. You should try to download the latest factory image (either 11 or 12beta) and flash it via recovery => adb sideload.