How to RE-lock bootloader of oneplus3???

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zubinvig

Senior Member
Dec 18, 2010
64
8
If you read the screen properly ull see the instructions on the screen itself do everything the same way you unlock the bootloader just instead of oem bootloader unlock type oem bootloader lock ...but make sure you're on stock rom and recovery
 
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innocentwoolf

Senior Member
Mar 2, 2014
316
430
Bangalore
If you read the screen properly ull see the instructions on the screen itself do everything the same way you unlock the bootloader just instead of oem bootloader unlock type oem bootloader lock ...but make sure you're on stock rom and recovery

But then My root access will be wiped??
I want root access and dont want than annoying screen
 

playya

Senior Member
Jan 12, 2007
6,873
2,514
Florida
two questions different answer but I would bet if there is a way to remove nag screen a google search would find it. Keep searching threads
 

Bradl79

Senior Member
May 25, 2008
3,357
4,583
J'Ville
there is no reason to re-lock bootloader, its still under warranty through Oneplus even with unlocked bootloader. but if u really want to

1. fastboot flash stock recovery (fastboot flash recovery recovery.img) (make sure u download the file, its somewhere here on the forums
2. reboot and then reboot to fastboot (fastboot oem lock) (i have never re locked a bootloader so i am not sure if it will rewipe ur device again like unlocking it does)
3. boot to OS and get developer options again and uncheck OEM Unlock (do this last)


i would not recommend re locking since it wont void warranty and seemed like a lot people screwed up their devices relocking it, but they also unchecked the oem unlock before flashing stock recovery, also i am not sure if step 2 is needed, i would just make sure u flash stock recovery 1st before doing anything
 
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ecarchi

New member
Aug 27, 2016
1
0
HELP

I try to relock the bootloader but in this momento my oneplus 3 is blocked...I cant update with the stock rom...please some help!!! :crying:
 

Arun Ammineni

Member
Apr 3, 2014
12
0
Hyderabad
If you read the screen properly ull see the instructions on the screen itself do everything the same way you unlock the bootloader just instead of oem bootloader unlock type oem bootloader lock ...but make sure you're on stock rom and recovery
What happens if i follow same steps with installed FREEDOM OS on my oneplus 3. You said make sure you are in stock OS.
 

SkyRider77

New member
Oct 23, 2016
1
0
Once i have unlocked the phn my device doesn't get recognised by the pc when i use command" fastboot devices".. Now, i'm unable to flash twrp, plz solve my issue.!!!
 

kgs1992

Senior Member
May 8, 2012
1,482
1,884
Bangalore
What happens if i follow same steps with installed FREEDOM OS on my oneplus 3. You said make sure you are in stock OS.

I try to relock the bootloader but in this momento my oneplus 3 is blocked...I cant update with the stock rom...please some help!!! :crying:

What part of be on stock OS is so hard to understand?
If you're not absolutely stock when relocking, you will brick your device.
Then good luck trying to enable OEM Unlocking when not being able to boot.

As someone who messes with their phone, relocking your bootloader is one of the worst possible things you can do.
If not done correctly, it WILL brick your device.
If you want to go back to stock, then surely do, there is absolutely no need to relock your boot loader unless you're selling your device to someone or if you're looking to pass SafetyNet for Android Pay or something.

Also, you cannot have the cake as well as eat it. You need to have an unlocked boot loader for root, exposed, etc. There is no way around this.
Phones previously had to be reverse engineered and exploited to gain root access, now OEMs freely allow unlocking.
 
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Arthurvben

Senior Member
Dec 2, 2013
91
15
What part of be on stock OS is so hard to understand?
If you're not absolutely stock when relocking, you will brick your device.
Then good luck trying to enable OEM Unlocking when not being able to boot.

As someone who messes with their phone, relocking your bootloader is one of the worst possible things you can do.
If not done correctly, it WILL brick your device.
If you want to go back to stock, then surely do, there is absolutely no need to relock your boot loader unless you're selling your device to someone or if you're looking to pass SafetyNet for Android Pay or something.

Also, you cannot have the cake as well as eat it. You need to have an unlocked boot loader for root, exposed, etc. There is no way around this.
Phones previously had to be reverse engineered and exploited to gain root access, now OEMs freely allow unlocking.

I hope you can read this. I'm not a noob and I am looking to relock my bootloader because I am going to sell it. The person wants it fully stock so I need to relock the bootloader in order to regain access to official Ota updates.

I need to be on complete stock (stock recovery and rom) right? Would you please kindly point me to where I need to go to download the stock Rom and recovery. There's some TWRP flashable OTA zips on Oneplus forums that restore stock Rom and recovery but I want to be sure that that is enough and that I don't end up bricking my device for something as stupid as this. Any help would greatly be appreciated!
 

kgs1992

Senior Member
May 8, 2012
1,482
1,884
Bangalore
I hope you can read this. I'm not a noob and I am looking to relock my bootloader because I am going to sell it. The person wants it fully stock so I need to relock the bootloader in order to regain access to official Ota updates.

I need to be on complete stock (stock recovery and rom) right? Would you please kindly point me to where I need to go to download the stock Rom and recovery. There's some TWRP flashable OTA zips on Oneplus forums that restore stock Rom and recovery but I want to be sure that that is enough and that I don't end up bricking my device for something as stupid as this. Any help would greatly be appreciated!

  • Fash 3.2.4 FW from here.
  • Follow all instructions from here (except I would suggest sideloading the StockROM before relocking).
 

batmobile_bang

Senior Member
Dec 17, 2011
251
51
Bangalore
I hope you can read this. I'm not a noob and I am looking to relock my bootloader because I am going to sell it. The person wants it fully stock so I need to relock the bootloader in order to regain access to official Ota updates.

I need to be on complete stock (stock recovery and rom) right? Would you please kindly point me to where I need to go to download the stock Rom and recovery. There's some TWRP flashable OTA zips on Oneplus forums that restore stock Rom and recovery but I want to be sure that that is enough and that I don't end up bricking my device for something as stupid as this. Any help would greatly be appreciated!

I followed the same guide posted on OnePlus Forum to re-lock my bootloader. Just follow them, it works.
Here is that link from OnePlus forum.

1. I restored my stock rom backup from TWRP
2. Flashed Stock recovery
3. fastboot oem lock
4. Sideload stock ROM
Done.

I unlocked because stock ROM I felt was much stabler and hassle free. Have rooted and played with custom ROMs enough in my Nexus 5 days. Just too much stress and can end up with non-working features. Might root again in future if I find something compelling in custom ROM.
 
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borijess

Senior Member
Jul 30, 2010
9,328
1,504
I followed the same guide posted on OnePlus Forum to re-lock my bootloader. Just follow them, it works.
Here is that link from OnePlus forum.

1. I restored my stock rom backup from TWRP
2. Flashed Stock recovery
3. fastboot oem lock
4. Sideload stock ROM
Done.

I unlocked because stock ROM I felt was much stabler and hassle free. Have rooted and played with custom ROMs enough in my Nexus 5 days. Just too much stress and can end up with non-working features. Might root again in future if I find something compelling in custom ROM.
If you unlock bootloader and root device. Do you still get OTA updates if you stay on stock ROM?
 

aadityarulez

Senior Member
Jun 5, 2013
305
72
If you unlock bootloader and root device. Do you still get OTA updates if you stay on stock ROM?
If you unlock device, you will still be able to apply OTA. If you rooted by modifying the /system partition, OTA will fail, but if thou rooted using systemless method, you can apply OTA.
 

shawn_pro

Senior Member
Jul 1, 2010
236
28
Mumbai
Iam on stock OOS 4.0.3 and i was plagued by the same error
--adb sideload the complete rom (with locked bootloader)-- method worked for me.

Previously i had unlocked bootloader and was on freedom OOS 2.3 with TWRP and then i realized that stock updates are better.
So i installed stock recovery and and tried to flash Stock Firmware 4.0.3 through sideload command and it failed.

then i installed TWRP and then installed stock OOS 4.0.3 and it installed fine but with some error.
Then i installed stock recovery

So i rebooted it and after long time it was installed but then i started getting dm_verity error and also i was frustated with unlocked bootloader message.

So i locked my boot loader first from fastboot oem lock and then sideloaded the stock 4.0.3 again and it really worked.

So now i am on stock rom and stock recovery and no more dm_verity error or unlocked bootloader msg to wait for 5 secs...

Now iam really loving my Oneplus 3..
 
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  • 1
    If you read the screen properly ull see the instructions on the screen itself do everything the same way you unlock the bootloader just instead of oem bootloader unlock type oem bootloader lock ...but make sure you're on stock rom and recovery
    1
    What happens if i follow same steps with installed FREEDOM OS on my oneplus 3. You said make sure you are in stock OS.

    I try to relock the bootloader but in this momento my oneplus 3 is blocked...I cant update with the stock rom...please some help!!! :crying:

    What part of be on stock OS is so hard to understand?
    If you're not absolutely stock when relocking, you will brick your device.
    Then good luck trying to enable OEM Unlocking when not being able to boot.

    As someone who messes with their phone, relocking your bootloader is one of the worst possible things you can do.
    If not done correctly, it WILL brick your device.
    If you want to go back to stock, then surely do, there is absolutely no need to relock your boot loader unless you're selling your device to someone or if you're looking to pass SafetyNet for Android Pay or something.

    Also, you cannot have the cake as well as eat it. You need to have an unlocked boot loader for root, exposed, etc. There is no way around this.
    Phones previously had to be reverse engineered and exploited to gain root access, now OEMs freely allow unlocking.
    1
    I hope you can read this. I'm not a noob and I am looking to relock my bootloader because I am going to sell it. The person wants it fully stock so I need to relock the bootloader in order to regain access to official Ota updates.

    I need to be on complete stock (stock recovery and rom) right? Would you please kindly point me to where I need to go to download the stock Rom and recovery. There's some TWRP flashable OTA zips on Oneplus forums that restore stock Rom and recovery but I want to be sure that that is enough and that I don't end up bricking my device for something as stupid as this. Any help would greatly be appreciated!

    I followed the same guide posted on OnePlus Forum to re-lock my bootloader. Just follow them, it works.
    Here is that link from OnePlus forum.

    1. I restored my stock rom backup from TWRP
    2. Flashed Stock recovery
    3. fastboot oem lock
    4. Sideload stock ROM
    Done.

    I unlocked because stock ROM I felt was much stabler and hassle free. Have rooted and played with custom ROMs enough in my Nexus 5 days. Just too much stress and can end up with non-working features. Might root again in future if I find something compelling in custom ROM.
    1
    Iam on stock OOS 4.0.3 and i was plagued by the same error
    --adb sideload the complete rom (with locked bootloader)-- method worked for me.

    Previously i had unlocked bootloader and was on freedom OOS 2.3 with TWRP and then i realized that stock updates are better.
    So i installed stock recovery and and tried to flash Stock Firmware 4.0.3 through sideload command and it failed.

    then i installed TWRP and then installed stock OOS 4.0.3 and it installed fine but with some error.
    Then i installed stock recovery

    So i rebooted it and after long time it was installed but then i started getting dm_verity error and also i was frustated with unlocked bootloader message.

    So i locked my boot loader first from fastboot oem lock and then sideloaded the stock 4.0.3 again and it really worked.

    So now i am on stock rom and stock recovery and no more dm_verity error or unlocked bootloader msg to wait for 5 secs...

    Now iam really loving my Oneplus 3..
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