I have never really seen this asked, and I am not just asking about the 6p but any Nexus or near stock phone with an unlockable bootloader (Motorola).
I have seen some claim they could not reflash their Nexus at all due to "allow OEM unlock" disabled in GUI. Others say if it is same stock ROM as currently installed, you can reflash the same stock ROM over what is there with bootloader locked.
If true, what if security patches are installed? I know flashing 6.0.1 over 6.0 requires unlocked bootloader. I am not talking about a rooted or modified phone in any way.
Just can the same image 6.0 for example be flashed on phone with 6.0 if bootloader is locked? What if unlocked, but gui has allow OEM unlock disabled?
Thanks.
chromedome00 said:
I have never really seen this asked, and I am not just asking about the 6p but any Nexus or near stock phone with an unlockable bootloader (Motorola).
I have seen some claim they could not reflash their Nexus at all due to "allow OEM unlock" disabled in GUI. Others say if it is same stock ROM as currently installed, you can reflash the same stock ROM over what is there with bootloader locked.
If true, what if security patches are installed? I know flashing 6.0.1 over 6.0 requires unlocked bootloader. I am not talking about a rooted or modified phone in any way.
Just can the same image 6.0 for example be flashed on phone with 6.0 if bootloader is locked? What if unlocked, but gui has allow OEM unlock disabled?
Thanks.
Click to expand...
Click to collapse
On Nexus 5X and 6P, if the bootloader is locked and OEM Unlock is disabled, one can either update via OTA or ADB sideload the update.zip via stock recovery...if using the stock rom.
I cannot speak on any phone aside from 5X and 6P.
Edit: I have not tried it (no reason to) but if bootloader is unlocked, with OEM Unlock setting later turned off, you should still be able to flash stock images via fastboot. The way I see it, the bootloader is still unlocked, which allows for factory images to be flashed in fastboot. You can still OTA or ADB sideload.
Sent from my Nexus 5X using Tapatalk
chromedome00 said:
I have never really seen this asked, and I am not just asking about the 6p but any Nexus or near stock phone with an unlockable bootloader (Motorola).
I have seen some claim they could not reflash their Nexus at all due to "allow OEM unlock" disabled in GUI. Others say if it is same stock ROM as currently installed, you can reflash the same stock ROM over what is there with bootloader locked.
If true, what if security patches are installed? I know flashing 6.0.1 over 6.0 requires unlocked bootloader. I am not talking about a rooted or modified phone in any way.
Just can the same image 6.0 for example be flashed on phone with 6.0 if bootloader is locked? What if unlocked, but gui has allow OEM unlock disabled?
Thanks.
Click to expand...
Click to collapse
If the bootloader is unlocked you can flash with fastboot, the "allow OEM unlocking" toggle has nothing to do with the ability to flash, it only controls whether the bootloader can be unlocked or not. If the bootloader is locked you can't flash anything at all, regardless of whether it's the same build or not, it's undeniably impossible to flash anything with a locked bootloader.
Updating to 6.0.1 from 6.0 doesn't require an unlocked bootloader, you can use the built-in update system to take the OTA update.
To answer your last question (and repeat myself), no you can't flash anything with a locked bootloader. If you''re unlocked but the GUI toggle is set to disallow OEM unlocking you can still flash because the bootloader is unlocked.
Some advice:
Leave the GUI toggle set to allow OEM unlocking. Leave the bootloader unlocked. Sometimes updates fail and the phone ends up in a boot loop, if your bootloader is locked and the toggle set to disallow unlocking you'd essentially have yourself a brick.
To clarify, I am not talking about ota or sideload of ota. I want to know about flashing 6.0 full over 6.0 full if bootloader locked. Let's say something is corrupted and phone isn't booting to GUI.
Is it possible to reflash same full image if bootloader locked. Forget the OEM toggle in GUI.
Surely someone knows for sure, or is curious.
Sorry, I see you answers and confirmed what I thought. Flashing anything but OTA is impossible. Missed that scrolling to fast on mobile.
So i installed the latest marshmallow update on my k3 note(k50a40) and while I was checking its features I found that there is an 'allow oem unlock' option in developer settings. From what I know this option allows us to unlock the bootloader from fastboot. I wanted to root my device but I dont know how to unlock the bootloader on this phone. Can someone help me?
hey I am on nougat 7.1.2 and am trying to relock my bootloader to sell my phone and buy a pixel but I am can't do this as option is greyed out in developer options, can anyone help please?
Malerin11 said:
hey I am on nougat 7.1.2 and am trying to relock my bootloader to sell my phone and buy a pixel but I am can't do this as option is greyed out in developer options, can anyone help please?
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Click to collapse
You can't lock it by developer options. What you need to do is do fastboot oem lock for windows or fastboot flashing lock on Linux. Just do the fastboot command you did to unlock your bootloader but instead of unlock type lock. Then select yes on your phone and the bootloader will lock.
Thanks for your reply, I got the bootloader relocked using adb after previously not working for me, I had to update adb fastboot files
I encountered a problem with unlocking the bootloader. To unlock it, it says in the instructions to enable usb debugging and oem unlock in dev settings but then i could not find any "oem unlock" in the developer settings causing the bootloader unlocker not to work. Does anyone know how to fix this and unlock their bootloader?
my zenfone 3 5.5" is currently updated to the latest update (nougat and everything else that follows)
which guide are you using?
The official way to do it is through the Asus app here. I believe you have to use official way because you are on the latest firmware and the unofficial way only works on pre-nougat.
I recently saw that OEM unlocking toggle is working. I unlocked my bootloader long ago. I'm on stock Oreo right now and I didn't "RELOCK THE BOOTLOADER" but it shows to me as if it was relocked. Is it possible? I already have magisk installed. Dunno what to do. Any suggestions?
The OEM unlock toggle in Developer Settings means nothing once you have unlocked the bootloader. Make sure it is enabled and check the bootloader manually... To my knowledge it is impossible to relock the bootloader without a signed image.