How to relock Bootloader??? - Asus ZenFone 4 Pro Questions & Answers

Hi all !!!
As soon as I received my ZS551KL, I unlocked bootloader, installed TWRP and rooted it.
I cannot update to Android 8 because my bootloader is unlocked, but I cannot found how to relock it for updating. I have tried fastboot oem lock and fastboot oem relock in fastboot mode without success.
Do you know how to do it?
Thank you so much :good:

You can flash raffyvito's modified Oreo zip, that way you get the stock recovery from which you flash the official Asus zip with the firmware updates, then you flash TWRP again and you're golden. You should check out his thread.

Hi guys. Do we have any news on how to relock the bootloader? Also can someone of you share the stock oreo recovery?

Related

How do you update the bootloader?

Does the bootloader update when you install a new version of a stock rom such as 2.3.4 or how do you update it?
No, once you unlock it, it's going to stay unlocked unless you do a fastboot oem lock
There is no such thing as updating the bootloader

Quick Qestion About Relocking The Bootloader

Couple quick question regarding locking the re-locking the bootloader.
First off I have the ATT One X rooted with TWRP Recovery. To go back to stock if I so choose, would I have to reflash the stock recovery then do fastboot oem lock before running the ruu or can i just fastboot oem lock the bootloader without flashing the stock recovery, then run the ruu?
I think I have to reflash the stock recovery first before relocking the bootloader. If that's the case, can someone link to the stock recovery img file?
I also read that if you're currently rooted and has your CID, you can update to 2.20 and root again...is that still the case?
Thanks
plmiller0905 said:
Couple quick question regarding locking the re-locking the bootloader.
First off I have the ATT One X rooted with TWRP Recovery. To go back to stock if I so choose, would I have to reflash the stock recovery then do fastboot oem lock before running the ruu or can i just fastboot oem lock the bootloader without flashing the stock recovery, then run the ruu?
I think I have to reflash the stock recovery first before relocking the bootloader. If that's the case, can someone link to the stock recovery img file?
I also read that if you're currently rooted and has your CID, you can update to 2.20 and root again...is that still the case?
Thanks
Click to expand...
Click to collapse
You can just fastboot oem lock, the RUU will take care of restoring the original ROM.
EDIT: This is my 123 post
plmiller0905 said:
Couple quick question regarding locking the re-locking the bootloader.
First off I have the ATT One X rooted with TWRP Recovery. To go back to stock if I so choose, would I have to reflash the stock recovery then do fastboot oem lock before running the ruu or can i just fastboot oem lock the bootloader without flashing the stock recovery, then run the ruu?
I think I have to reflash the stock recovery first before relocking the bootloader. If that's the case, can someone link to the stock recovery img file?
I also read that if you're currently rooted and has your CID, you can update to 2.20 and root again...is that still the case?
Thanks
Click to expand...
Click to collapse
If you want to go back to stock just fastboot oem lock then run the RUU. This is what I did. You can then re-unlock the bootloader and install SuperSU to reestablish root. It's pretty easy. Keep in mind, once you go to 2.20 you can not flash boot.img or radios from TWRP. You have to use adb to flash the boot.img, then boot into recovery and flash the ROM.
If you go into the Dev section, one of the first threads covers this and actually has a guide so you wouldn't have had to ask a question.
danny39 said:
You can just fastboot oem lock, the RUU will take care of restoring the original ROM.
EDIT: This is my 123 post
Click to expand...
Click to collapse
So even though I have a custom recovery (TWRP) I don't have to flash the stock recovery before I relock the bootloader?
plmiller0905 said:
So even though I have a custom recovery (TWRP) I don't have to flash the stock recovery before I relock the bootloader?
Click to expand...
Click to collapse
Here. You don't need the 1.85 RUU though. Just use 2.20 and skip the manual update from AT&T.
http://forum.xda-developers.com/showthread.php?t=1812039&highlight=2+20+unlock
Butters619 said:
If you want to go back to stock just fastboot oem lock then run the RUU. This is what I did. You can then re-unlock the bootloader and install SuperSU to reestablish root. It's pretty easy. Keep in mind, once you go to 2.20 you can not flash boot.img or radios from TWRP. You have to use adb to flash the boot.img, then boot into recovery and flash the ROM.
If you go into the Dev section, one of the first threads covers this and actually has a guide so you wouldn't have had to ask a question.
Click to expand...
Click to collapse
Butters619 said:
Here. You don't need the 1.85 RUU though. Just use 2.20 and skip the manual update from AT&T.
http://forum.xda-developers.com/showthread.php?t=1812039&highlight=2+20+unlock
Click to expand...
Click to collapse
Thanks...I really appreciate it
plmiller0905 said:
So even though I have a custom recovery (TWRP) I don't have to flash the stock recovery before I relock the bootloader?
Click to expand...
Click to collapse
No, it's the opposite: You can't RUU until you relock. It will fail if you try.
iElvis said:
No, it's the opposite: You can't RUU until you relock. It will fail if you try.
Click to expand...
Click to collapse
Oh ok...gotcha...so fastboot lock bootloader then run the ruu...great.
Like I mentioned before...I just got a little confused because people on YouTube is also flashing a stock recovery IMG before running the ruu.
Sent from my HTC One X using Tapatalk 2
plmiller0905 said:
So even though I have a custom recovery (TWRP) I don't have to flash the stock recovery before I relock the bootloader?
Click to expand...
Click to collapse
RUU will restore your recovery to the stock recovery.
Just keep in mind that once you lock your bootloader you won't be able to boot your phone until you run the RUU. So make sure you're ready to go with the RUU before you fastboot oem lock.

[Q] K2_UL not rooted after update to 4.2.2

Hello guys!
My story is short I had rooted and unlocked bootloader on Android 4.1.2. Then i want to update, so i get moonshine s-off, downgraded hboot, ran RUU and installed updates. Now i have 4.2.2 and sense 5 of course. And now is my problem. I don't have root! What should I do? I tried to flash twrp recovery by fastboot but i getting always the same failure:
FAILED (remote: not allowed). Every thoughts about it?
When you RUUed you had to relock your Bootloader
Unlock your bootloader again then either boot twrp recovery or flash it
Then flash root again
russellvone said:
When you RUUed you had to relock your Bootloader
Unlock your bootloader again then either boot twrp recovery or flash it
Then flash root again
Click to expand...
Click to collapse
I unlocked bootloader (by htcdev of course), then i flashed superuser. Should working fine, but Titanium Backup told me that don't have root rights...
PS. Of course, after unlock i flashed TWRP
PPS. Problem solved, just flashed SuperSU instead of superuser Big thanks!
Awesome

Can't rollback to Android MM to relock bootloader

Hello,
A few days ago I managed to go back to a stock rom from a custom one. I have a FRD-L09432B360 firmware at the moment, but the bootloader is unlocked. I don't remember the code I used to unlock the bootloader, and I'd like to relock the bootloader so I am able to update to the latest firmwares. I've read that by downgrading to Marshmellow the bootloader will relock itself.
I am following this guide to do so, but when I reboot to apply the UPDATE.APP of the rollback package, it get stucks on 5% for a while, and after a few minutes it reboots, leaving me with the same firmware.
Is there something I am doing wrong?
Is there another way to relock the bootloader without the unlocking code?
Thanks a lot,
Mcat
I still haven't been able to fix this issue? Any idea is appreciated, thanks
You don't need to relock the bootloader to update. Use hurupdater

Can I relock my already unlocked bootloader ?

Please guys,
I unlocked my bootloader a while ago. Since I'm not using any rooted app or anything I'd like to revert back.
Is it possible to build the bootloader again? With a new fastboot rom maybe, I don't know.
https://forum.xda-developers.com/oneplus-6/help/help-unrooting-relocking-bootloader-t3938600
https://forum.xda-developers.com/oneplus-6/help/oneplus-6-bootloader-relock-t3866287
https://forum.xda-developers.com/oneplus-6/help/return-to-stock-lock-bootloader-how-t3807695
Yes
fastboot rom will not relock bootloader, use msm tool

Categories

Resources