Develop Bugs

How to Remove Boot freeze (warning screen) after unlocking bootloader

Hey there, is there possible to remove that ugly black screen after unlocking bootloader that appears every boot and freezes 5 sec? Thanks in advance.

LaurynasVP said:
Hey there, is there possible to remove that ugly black screen after unlocking bootloader that appears every boot and freezes 5 sec? Thanks in advance.
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Do you want to relock the bootloader or you want to let it unlocked?

I would keep it unlocked and skip the black screen if possible...

I'd like to keep it unlocked since I need root, is it possible to remove it somehow?

LaurynasVP said:
I'd like to keep it unlocked since I need root, is it possible to remove it somehow?
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Click to collapse
I don't think that this is possible to do, even changing the splash logo you can't do that. You could try to relock the bootloader but I never tried doing that on a custom ROM, only on the stock one. I don't remember if after relocking the bootloader with the bootloader status as relocked the initial boot menu is shown. Anyway you could try. I suggest the mauronofrio's tool if you're on Windows. If you are on Linux you have to use the adb and fastboot commands

re
DD3Boh said:
I don't think that this is possible to do, even changing the splash logo you can't do that. You could try to relock the bootloader but I never tried doing that on a custom ROM, only on the stock one. I don't remember if after relocking the bootloader with the bootloader status as relocked the initial boot menu is shown. Anyway you could try. I suggest the mauronofrio's tool if you're on Windows. If you are on Linux you have to use the adb and fastboot commands
Click to expand...
Click to collapse
I assume [re]locking your BL on custom ROM will cause hard-brick. I need root so can't lock BL

LaurynasVP said:
I assume [re]locking your BL on custom ROM will cause hard-brick. I need root so can't lock BL
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I never tried it but at the end maybe yes. I don't think hard brick but it depends on what you exactly mean with hard brick (all the people think the hardbrick as something different lol)

DD3Boh said:
I never tried it but at the end maybe yes. I don't think hard brick but it depends on what you exactly mean with hard brick (all the people think the hardbrick as something different lol)
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I tried this and yes it cause hard brick to my zuk z2 plus. But i somehow make my exit from hard brick.

I used to have a ZTE Axon 7 that used pretty-much the exact same warning screen as the ZUK Z2. For certain ROMs on the device you had to flash a different bootloader, as provided by developers on XDA. I remember in one of the flashable bootloaders, the developer was able to remove the warning screen somehow. So I think it is possible to do this on the ZUK as well. It just needs someone to look into it.

rajatsinghsp said:
I tried this and yes it cause hard brick to my zuk z2 plus. But i somehow make my exit from hard brick.
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Click to collapse
Yeah just a thing, you can now relock bootloader on z2, on specific Roms. I made a guide for it and it works 100%

DD3Boh said:
Yeah just a thing, you can now relock bootloader on z2, on specific Roms. I made a guide for it and it works 100%
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Click to collapse
That sounds great. Although I just went and read your guide and I noticed it says the 5-second bootloader warning will still be there. Is there no way of getting rid of the warning completely even with a locked bootloader?

Should we unlock the Bootloader if no root planned

If you have no plans to root the phone is there any reason to unlock the bootloader?

It would probably break Safety net and Android pay. BUT if you're unlocked, you have ability to flash factory images. That could be beneficial something goes really bad and your device won't boot up. You're also less secure with it unlocked.
Sent from my marlin using XDA Labs

You can always lock and unlock the bootloader when you want.

I would say you should at least have the option checked on in the Developer settings.
So just in case something happened and you can't fully boot the phone. you can still get into it and unlock the bootloader and do what you need to do.
This happened to a friend of mine where something happened and couldn't fully boot and couldn't unlock bootloader cause the option was never checked.

I don't believe the unlock option stays enabled after it boots up.

I would argue why WOULDN'T you unlock the bootloader? Regardless of rooting, an unlocked bootloader is a safety net for when things go south. Phone decides to bootloop tomorrow? No big deal, flash the latest images via fastboot and start from scratch.
Sure there's the counter argument of the phone being much less secure and vulnerable in the hands of a person who is tech savvy and stole/found your device. I'm not worried about my phone being stolen so I ALWAYS unlock my bootloader.

Pain-N-Panic said:
I would argue why WOULDN'T you unlock the bootloader? Regardless of rooting, an unlocked bootloader is a safety net for when things go south. Phone decides to bootloop tomorrow? No big deal, flash the latest images via fastboot and start from scratch.
Sure there's the counter argument of the phone being much less secure and vulnerable in the hands of a person who is tech savvy and stole/found your device. I'm not worried about my phone being stolen so I ALWAYS unlock my bootloader.
Click to expand...
Click to collapse
or just flash the full OTA image without an unlocked bootloader.

mngdew said:
You can always lock and unlock the bootloader when you want.
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Does re-locking the bootloader wipe the phone?

foosion said:
Does re-locking the bootloader wipe the phone?
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Yes, it does. That's why you should unlock or lock the bootloader when flashing factory images.

mngdew said:
Yes, it does.
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Click to collapse
Thanks
mngdew said:
That's why you should unlock or lock the bootloader when flashing factory images.
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Click to collapse
I don't understand what you mean by this.
You have to unlock the bootloader to flash a factory image and you can eliminate the w flag so that flashing the factory image won't wipe the phone.

uicnren said:
or just flash the full OTA image without an unlocked bootloader.
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Click to collapse
Very true. If the phone goes into booploop due to a bad zip or whatever other reason you have a bricked device with no options to recover.

It's healthy for me to unlock my Bootloader ASAP on XDA!

Unlocking the bootloader was always the very first thing I did when I got a new phone. However, I use Android Pay all the time, and Google seems very determined to break AP for unlocked bootloaders with every new patch. Sure, someone usually finds a way to get it working again, but that sometimes takes time, and I simply use AP too much to deal with it. As long as AP won't work officially with an unlocked bootloader, mine stays locked unless I'm flashing an image, and even then, gets locked right after. Luckily, OTAs are posted by Google now, often at the same time as the Factory Images, so it hasn't really been an issue for me.

akenis said:
It would probably break Safety net and Android pay. BUT if you're unlocked, you have ability to flash factory images. That could be beneficial something goes really bad and your device won't boot up. You're also less secure with it unlocked.
Sent from my marlin using XDA Labs
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Click to collapse
Thank you what actually is compromised when phone is unlocked?

uicnren said:
or just flash the full OTA image without an unlocked bootloader.
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How can you flash with a locked bootloader?

painfree said:
Thank you what actually is compromised when phone is unlocked?
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Data?
https://www.google.com/amp/s/www.ho...unlocking-your-android-phones-bootloader/amp/
Sent from my marlin using XDA Labs

painfree said:
If you have no plans to root the phone is there any reason to unlock the bootloader?
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Click to collapse
If you ever contemplate going onto the Verizon network, when you first boot up after placing VZN sim into the phone,
the ability to ever unlock again is eliminated. You could relock it, but it will have the Unlock option in Developer
Option greyed out forever after that. I would unlock it maybe because of Verizon thing, but also to be able to flash factory a image in case I ever mess up the phone.

michaelbsheldon said:
If you ever contemplate going onto the Verizon network, when you first boot up after placing VZN sim into the phone,
the ability to ever unlock again is eliminated. You could relock it, but it will have the Unlock option in Developer
Option greyed out forever after that. I would unlock it maybe because of Verizon thing, but also to be able to flash factory a image in case I ever mess up the phone.
Click to expand...
Click to collapse
As long as you have the Google version it should never grey out on you at least that's how it was with the first pixels. I have Verizon I've never had it grey out.

jt3 said:
Unlocking the bootloader was always the very first thing I did when I got a new phone. However, I use Android Pay all the time, and Google seems very determined to break AP for unlocked bootloaders with every new patch. Sure, someone usually finds a way to get it working again, but that sometimes takes time, and I simply use AP too much to deal with it. As long as AP won't work officially with an unlocked bootloader, mine stays locked unless I'm flashing an image, and even then, gets locked right after. Luckily, OTAs are posted by Google now, often at the same time as the Factory Images, so it hasn't really been an issue for me.
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This. Android Pay is pretty convenient and I always told myself I didn't need it compared to unlock+root. Wish Google would allow AP with unlocked bootloader but I can understand why they don't from a security standpoint.
Sent from my Pixel 2 XL using Tapatalk

foosion said:
Thanks
I don't understand what you mean by this.
You have to unlock the bootloader to flash a factory image and you can eliminate the w flag so that flashing the factory image won't wipe the phone.
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When you unlock the bootloader, phone is wiped automatically.

Can I lock my bootloader for Warranty?

Hello guys! I wanna know if I can lock my bootl back is I flash a custom recovery and rom. Can I lock my bootloader and come back to MIUI? Can I use MI flash with option clean and lock with custom recovery? Or I need stock?

SebiC18 said:
Hello guys! I wanna know if I can lock my bootl back is I flash a custom recovery and rom. Can I lock my bootloader and come back to MIUI? Can I use MI flash with option clean and lock with custom recovery? Or I need stock?
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Click to collapse
Miflash will replace custom recovery

NickTheSickDick said:
Miflash will replace custom recovery
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Click to collapse
And on top of this the answer is that yes if you use mi flash clean and lock option then technically you have warranty back since the phone is locked.
However if the device is compromised to a point where you cannot flash then there's no way to get warranty back.
Tbh the risk is worth it

Dobsgw said:
And on top of this the answer is that yes if you use mi flash clean and lock option then technically you have warranty back since the phone is locked.
However if the device is compromised to a point where you cannot flash then there's no way to get warranty back.
Tbh the risk is worth it
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Click to collapse
There's barely a risk with an unlocked bootloader, the real problem arises when you ruin everything with a locked bootloader and you can't even flash anything.

NickTheSickDick said:
There's barely a risk with an unlocked bootloader, the real problem arises when you ruin everything with a locked bootloader and you can't even flash anything.
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Click to collapse
That's actually incredibly true for Xiaomi phones.
Seems the majority of issues arise from LB phones that brick and can't be flashed without test point (voiding warranty anyway)

If you have the rights to unlock the bootloader, then even if you keep locked and it bricks, you can unlock and flash a rom again.
In fact even if you don't want a custom rom or root, asking to be able to unlock bootloader is must, just in case.

How to Lock Bootloader

Hello, I purchased a Pixel 3 XL off craigslist and it is working fine, but the bootloader is unlocked therefore I am receiving a warning when restarting the phone and Google Pay does not work. How can I re-lock the bootloader? Do I need to flash the latest standard google image? The build number is: "crosshatch-userdebug 9 PQ1A.181105.013 5027108 dev-keys". When in bootloader the bootloader version is: b1c1-0.1-5004167. Obviously a n00b here, please be gentle. Thank you for any help.

Do you have a computer? If so what OS do you use?
Sent from my Pixel 3 XL using Tapatalk

superchilpil said:
Do you have a computer? If so what OS do you use?
Sent from my Pixel 3 XL using Tapatalk
Click to expand...
Click to collapse
I do have a computer, a Windows 10 Pro

Are you planning on rooting? If so, you can use Magisk Hide (after using Magisk to root of course) to get Google Pay to work. I would be hesitant to re-lock the BL unless you are certain that it is completely stock otherwise. Re-locking a modified phone can brick the device. Better to just learn how to root, etc and keep it unlocked. You have come to the right place to learn.

sliding_billy said:
Are you planning on rooting? If so, you can use Magisk Hide (after using Magisk to root of course) to get Google Pay to work. I would be hesitant to re-lock the BL unless you are certain that it is completely stock otherwise. Re-locking a modified phone can brick the device. Better to just learn how to root, etc and keep it unlocked. You have come to the right place to learn.
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Click to collapse
No, I don't plan on rooting. But I am afraid of bricking the phone since I don't know what has been done to it. Is there a way to determine what was done to unlock the bootloader? Otherwise I will follow your recommendation of using Magisk Hide. I would prefer to keep the phone stock. Thanks.

eec007 said:
No, I don't plan on rooting. But I am afraid of bricking the phone since I don't know what has been done to it. Is there a way to determine what was done to unlock the bootloader? Otherwise I will follow your recommendation of using Magisk Hide. I would prefer to keep the phone stock. Thanks.
Click to expand...
Click to collapse
If you live in Denver I'll trade you my Verizon one for yours. It has a locked bootloader.

eec007 said:
No, I don't plan on rooting. But I am afraid of bricking the phone since I don't know what has been done to it. Is there a way to determine what was done to unlock the bootloader? Otherwise I will follow your recommendation of using Magisk Hide. I would prefer to keep the phone stock. Thanks.
Click to expand...
Click to collapse
The two obvious things you can check are that you have stock recovery and that the phone is not rooted. Manually power on to bootloader (hold volume down and press power then use the volume keys to select recovery and press power. you should get a no command android screen if in stock recovery. assuming you don't have a Magisk icon, you are probably not rooted but you can confirm by installing and running a root app like root checker. likely, the previous owner did nothing but unlock the BL given how recently it came out, but if someone where really creative they could have done work in the other partition. there are no exploites, so doing it normally (running fastboot flashing unlock from a prompt) is pretty much all that would have been done other than enabling developer options and OEM unlocking in settings.
Personally, I think you have a good chance to learn your device, root (you need to be rooted for Magisk hide) and keep the bootloader unlocked. Besides rooting, being able to install a full factory image instead of an OTA is so much better in my opinion. The amount of work it would take to be 100% confident that the only thing done was the BL unlock would take as much work as at least getting a working knowledge of rooting and reinstalling the OS.
P.S. Keeping a phone "stock and rooted" has advantages. That is how I run my 3 XL and how I ran my OG XL. No custom OS. Not even a kernel.

coolhandz said:
If you live in Denver I'll trade you my Verizon one for yours. It has a locked bootloader.
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lol, what I don't get is that I thought the google edition could have the bootloader unlocked in the developer options. So why go to this hassle of unlocking the bootloader from fastboot? FYI, in the Developer options the OEM unlocking is greyed out and says "Bootloader is already unlocked".

sliding_billy said:
The two obvious things you can check are that you have stock recovery and that the phone is not rooted. Manually power on to bootloader (hold volume down and press power then use the volume keys to select recovery and press power. you should get a no command android screen if in stock recovery. assuming you don't have a Magisk icon, you are probably not rooted but you can confirm by installing and running a root app like root checker. likely, the previous owner did nothing but unlock the BL given how recently it came out, but if someone where really creative they could have done work in the other partition. there are no exploites, so doing it normally (running fastboot flashing unlock from a prompt) is pretty much all that would have been done other than enabling developer options and OEM unlocking in settings.
Personally, I think you have a good chance to learn your device, root (you need to be rooted for Magisk hide) and keep the bootloader unlocked. Besides rooting, being able to install a full factory image instead of an OTA is so much better in my opinion. The amount of work it would take to be 100% confident that the only thing done was the BL unlock would take as much work as at least getting a working knowledge of rooting and reinstalling the OS.
P.S. Keeping a phone "stock and rooted" has advantages. That is how I run my 3 XL and how I ran my OG XL. No custom OS. Not even a kernel.
Click to expand...
Click to collapse
Thank you! Root Checker says that "root access is not properly installed on this device". The recovery mode screen just has a warning about the bootloader is unlocked and a link to a google help page. I figure that I can always unlock the bootloader again if I need to later, but for now I just want everything to work (bank and pay app) and not worry about updating anything myself. I think I may try fastboot to lock the bootloader for now. Thanks for all the help.

Hope it all works out for you. I assume you did a factory reset on the device since you got it used. Re-locking will do another factory reset.

sliding_billy said:
Hope it all works out for you. I assume you did a factory reset on the device since you got it used. Re-locking will do another factory reset.
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Click to collapse
Yeah, so I locked using "fastboot flashing lock" but then it doesn't start, saying that there is no operating system or something like that. I freaked out and was able to unlock again using "fastboot flashing unlock". Now all is wiped. I guess I need to flash the oem rom first, then lock. I'll have to do this all later tonight. Just glad that I didn't brick it yet.

eec007 said:
Thank you! Root Checker says that "root access is not properly installed on this device". The recovery mode screen just has a warning about the bootloader is unlocked and a link to a google help page. I figure that I can always unlock the bootloader again if I need to later, but for now I just want everything to work (bank and pay app) and not worry about updating anything myself. I think I may try fastboot to lock the bootloader for now. Thanks for all the help.
Click to expand...
Click to collapse
I haven't rooted or bl unlocked in some time now so if I make a mistake someone please correct me. After buying it from a 3rd party I'd wipe the device entirely. Download the correct image and install the latest platform tools for Windows (here) https://developer.android.com/studio/releases/platform-tools and make sure you can connect with adb devices and fastboot devices commands. Then extract the latest full image from here https://developers.google.com/android/images to your platform-tools directory and run the flashall.bat command if you wish to wipe the entire device and get rid of anything the previous owner might have "inadvertently" installed. (this is what I would do but not necessarily what you should do if you want to keep the current apps and system intact) This will reset your device and then you can lock the bootloader with no worry and you'll have a stock system.
I agree that since you can unlock it at any time and you don't need it now then relock it. But there are those here that disagree with me and fight with Magisk and OTAs constantly. But they are not noobs and know what they're doing. If you want to learn there is a wealth of information here so it's your call. Just my 2 cents. But please check my steps before you do anything that might cause issues.
edit: darn, sorry I just saw above that you already tried to lock it. I hope what I said to do will get you out of the predicament.

bobby janow said:
I haven't rooted or bl unlocked in some time now so if I make a mistake someone please correct me. After buying it from a 3rd party I'd wipe the device entirely. Download the correct image and install the latest platform tools for Windows (here) https://developer.android.com/studio/releases/platform-tools and make sure you can connect with adb devices and fastboot devices commands. Then extract the latest full image from here https://developers.google.com/android/images to your platform-tools directory and run the flashall.bat command if you wish to wipe the entire device and get rid of anything the previous owner might have "inadvertently" installed. (this is what I would do but not necessarily what you should do if you want to keep the current apps and system intact) This will reset your device and then you can lock the bootloader with no worry and you'll have a stock system.
I agree that since you can unlock it at any time and you don't need it now then relock it. But there are those here that disagree with me and fight with Magisk and OTAs constantly. But they are not noobs and know what they're doing. If you want to learn there is a wealth of information here so it's your call. Just my 2 cents. But please check my steps before you do anything that might cause issues.
edit: darn, sorry I just saw above that you already tried to lock it. I hope what I said to do will get you out of the predicament.
Click to expand...
Click to collapse
Your steps are basically what I will try tonight. Currently the phone is working again, so there was no harm done yet (just the restore of all apps and such). But I'm going to flash the oem image tonight and start all over again.

eec007 said:
Your steps are basically what I will try tonight. Currently the phone is working again, so there was no harm done yet (just the restore of all apps and such). But I'm going to flash the oem image tonight and start all over again.
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Click to collapse
One thing I would do before I relocked the bl would be to do the full login procedure, email everything other than apps. Then make sure you're on the Nov update in about phone, I'm sure you will be, and then fastboot relock the bl with the proper command. It will wipe the device again but it's a small price to pay for about 10 minutes of work. Then once it reboots and there is no more error message you'll be fully stock. Enable dev options again and make sure the oem switch is active allowing bl unlock. Then you're done. I've gotten to the point on my 5X where I even flip the oem switch so it can't be bl unlocked until I go in and flip it back. Dangerous if you're flashing stuff but not so much if you're just taking OTAs. That's of course your call entirely. Good luck.

eec007 said:
lol, what I don't get is that I thought the google edition could have the bootloader unlocked in the developer options. So why go to this hassle of unlocking the bootloader from fastboot? FYI, in the Developer options the OEM unlocking is greyed out and says "Bootloader is already unlocked".
Click to expand...
Click to collapse
That will stay grayed out until you relock the bootloader. That slider "allows" unlocking. Then you boot into fastboot and unlock it.
So you would reverse the process, hit fastboot and relock the bootloader. Then you can toggle the slider back to not allow unlocking.
Relocking the bootloader will wipe your phone.
You should not do this until you first flash the full factory image to make sure the phone is 100 percent stock. And if it were my phone I would wait for the next OTA update after flashing it back to stock to make sure it goes ok. Then lock it.
And then I would wait awhile before hitting the slider.
You are playing with fire here, if you mess it up and lock it and hit the slider you will not be able to fix it. And no offense, but since you have not done this all before on this phone chances are good you will mess it up.
So, flash to stock and leave it unlocked.
Then wait for the next OTA.
Then lock it.
Then wait a bit more before you hit the slider.
And remember, since you are not the original buyer you will not be able to warranty it.

eec007 said:
Hello, I purchased a Pixel 3 XL off craigslist and it is working fine, but the bootloader is unlocked therefore I am receiving a warning when restarting the phone and Google Pay does not work. How can I re-lock the bootloader? Do I need to flash the latest standard google image? The build number is: "crosshatch-userdebug 9 PQ1A.181105.013 5027108 dev-keys". When in bootloader the bootloader version is: b1c1-0.1-5004167. Obviously a n00b here, please be gentle. Thank you for any help.
Click to expand...
Click to collapse
They're right to mention that relocking a modified device can result in a brick.
Your best bet is to go to https://developers.google.com/android/images#taimen
Follow the directions to the "T", then relock it if you are really really sure that the unlock screen bothers you.
Would suggest to do this anyway, no matter future unlock status.

TonikJDK said:
That will stay grayed out until you relock the bootloader. That slider "allows" unlocking. Then you boot into fastboot and unlock it.
So you would reverse the process, hit fastboot and relock the bootloader. Then you can toggle the slider back to not allow unlocking.
Relocking the bootloader will wipe your phone.
You should not do this until you first flash the full factory image to make sure the phone is 100 percent stock. And if it were my phone I would wait for the next OTA update after flashing it back to stock to make sure it goes ok. Then lock it.
And then I would wait awhile before hitting the slider.
You are playing with fire here, if you mess it up and lock it and hit the slider you will not be able to fix it. And no offense, but since you have not done this all before on this phone chances are good you will mess it up.
So, flash to stock and leave it unlocked.
Then wait for the next OTA.
Then lock it.
Then wait a bit more before you hit the slider.
And remember, since you are not the original buyer you will not be able to warranty it.
Click to expand...
Click to collapse
I agree with most of your post other than waiting for the next OTA before you lock the bootloader. Why would he need to do that? If he's stock, and he'll see that immediately, then relock it. He doesn't want root or Magisk but only wants banking and Pay. With the slider allowing bl unlock he's in no danger whatsoever. Lock and relock whenever he wants. OTA will not disallow the slider once it's set.

TonikJDK said:
That will stay grayed out until you relock the bootloader. That slider "allows" unlocking. Then you boot into fastboot and unlock it.
So you would reverse the process, hit fastboot and relock the bootloader. Then you can toggle the slider back to not allow unlocking.
Relocking the bootloader will wipe your phone.
You should not do this until you first flash the full factory image to make sure the phone is 100 percent stock. And if it were my phone I would wait for the next OTA update after flashing it back to stock to make sure it goes ok. Then lock it.
And then I would wait awhile before hitting the slider.
You are playing with fire here, if you mess it up and lock it and hit the slider you will not be able to fix it. And no offense, but since you have not done this all before on this phone chances are good you will mess it up.
So, flash to stock and leave it unlocked.
Then wait for the next OTA.
Then lock it.
Then wait a bit more before you hit the slider.
And remember, since you are not the original buyer you will not be able to warranty it.
Click to expand...
Click to collapse
Thank you for explaining this. I had thought that the Developer Option slider was to unlock the bootloader, but your explanation clarifies it, the slider is to allow the bootloader to be unlocked...

Ok, so I tried to flash the factory image using adb flash-all and it keeps getting the error:
Sending sparse 'vendor_a' 2/2 (193888 KB) FAILED (Error reading sparse file)
Now the phone is not working at all and says that "device is corrupt" and will not boot past the white google screen. I can try again using adb, but it is the same error each time. I tried to download the image again and same sparse error. I can also fastboot in TWRP, but not sure what to do in there. What am I doing wrong? I guess I should've rooted and used Magisk like others have said.

turns out changing to a different cable resolved my sparse error and I was then successfully able to apply the factory image and lock the device. Thanks everyone for the help.

Does relocking the bootloader get rid of the warning screen on boot?

I am asking because I'm interested in rooting this phone... But I am afraid that my phone will be forever stuck with a warning screen (similar to attached pic) that i cannot get rid of.. this would be troublesome if i do want to sell it...
if you have unlocked, and then relocked bootloader (with all stock images etc..) please tell me if any warnings remain,... thanks!

It'll go away once you relock the bootloader
Sent from my Pixel 3 XL using Tapatalk

Yes relocking the bootloader will prevent that warning from showing. Just be certain the device is 100% bone stock before locking the bootloader or you could risk being bricked.

fury683 said:
Yes relocking the bootloader will prevent that warning from showing. Just be certain the device is 100% bone stock before locking the bootloader or you could risk being bricked.
Click to expand...
Click to collapse
Risk? Its a for sure thing. Do NOT lock on any kind of custom ROM or any modifications. You need to be 100% stock before locking again or you will brick and not be able to recover

PhantomSoul said:
I am asking because I'm interested in rooting this phone... But I am afraid that my phone will be forever stuck with a warning screen (similar to attached pic) that i cannot get rid of.. this would be troublesome if i do want to sell it...if you have unlocked, and then relocked bootloader (with all stock images etc..) please tell me if any warnings remain,... thanks!
Click to expand...
Click to collapse
Even if you never root your phone, leaving your bootloader unlocked greatly increases your chances of recovering your phone from a no-boot situation because you can flash a complete factory image, rewriting the bootloader. If/when you ever decide to sell, you're going to want to wipe the entire phone anyway, and you can worry about it then. TBH, I don't even notice the warning anymore.