how to relock bootloder - Lenovo ZUK Z2 (Plus) Questions & Answers

How to relock bootloder of lenovo z2 plus

lcg0011 said:
How to relock bootloder of lenovo z2 plus?
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To get full lock you need to flash lower version of firmware, for relock only (you will not get OTA) flash the same ZUI version , as was installed before.

sergsinger said:
To get full lock you need to flash lower version of firmware, for relock only (you will not get OTA) flash the same ZUI version , as was installed before.
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i want to flash stock rom and relock bootloader

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How to Relock Bootloader With TA backup

Hi guys,
I have rooted with Vroot and taken TA backup. Then i unlocked my bootloader and flashed maximus kernel...
So my question is How want to relock my bootloader with TA backup...
can anyone guide me through process..
Thanks in advance...
asrupesh said:
Hi guys,
I have rooted with Vroot and taken TA backup. Then i unlocked my bootloader and flashed maximus kernel...
So my question is How want to relock my bootloader with TA backup...
can anyone guide me through process..
Thanks in advance...
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ta backup has nothing to do with relocking bootloader
it is used to save some features of sony
relocking has not been made yet
and why would u want to relock?
Ashwin Prabhunerurkar said:
ta backup has nothing to do with relocking bootloader
it is used to save some features of sony
relocking has not been made yet
and why would u want to relock?
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Just incase to get the official kitkat update via SUS
As far as i know you just need to flash stock firmware back to original rom you dont need to relock bootloader to get kitkat update via sus
Sent from my D5322 using Tapatalk
geogetski666 said:
As far as i know you just need to flash stock firmware back to original rom you dont need to relock bootloader to get kitkat update via sus
Sent from my D5322 using Tapatalk
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To use SUS, you must have a locked bootloader. For those who have an unlocked bootloader, just wait until someone uploads an FTF. FTFs can be flashed on unlocked bootloaders using Flashtool by Androxyde.
Ashwin Prabhunerurkar said:
ta backup has nothing to do with relocking bootloader
it is used to save some features of sony
relocking has not been made yet
and why would u want to relock?
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Click to collapse
You can easily relock the bootloader in just two steps.
Flash only the kernel via flashtool and then relock the bootloader also via flashtool.
You can't go wrong if you've used flashtool before.
arjun.arora said:
You can easily relock the bootloader in just two steps.
Flash only the kernel via flashtool and then relock the bootloader also via flashtool.
You can't go wrong if you've used flashtool before.
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And can we flash a custom kernel like maximus kernel while relocking?
charming.arpit said:
And can we flash a custom kernel like maximus kernel while relocking?
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The process is quite simple but do it at your own risk..
Turn on your computer's internet..
Open flashtool and select flashmode..
Select the firmware, then exclude everything but kernel (Remember only kernel should be selected, exclude everything)..
Uncheck every option in wipe..
Flash the mobile, it should take just 4-5 seconds..
Don't restart yet, disconnect your mobile..
Open BLU option in flashtool..
Connect your mobile, a dialog box will open, just click on relock..
(Remember, don't turn off the internet connection untill the bootloader is locked)
Restart your phone, it'll still be rooted and you'll be able to get all official updates..
Only thing you'll lose is the cwm recovery..

downgrading question

Hello all
I have a question regarding downgrade.
I have a g5 xt 1676 dual sim 16 gb, 3gb ram. Now i am running npps 25.137-72-4 version. As u all know.. getting firmware for full flash is a pain for moto g5. I got this phone in some old firmware, and got two ota updates since then .. and it became 25.137-72-4 version..
Now i want to reflash it to stock firmware. I already have an unlocked bootloader .
So my question is.. since i have unlocked bootloader.. can i downgrade?
I have this firmware - CEDRIC_NPP25.137-33_cid50_subsidy-DEFAULT_regulatory-DEFAULT_CFC
As you see.. this is 25.137-33
This is the latest i could get. ( Please feel free to share any updated firmware if you have, a twrp backup of untouched stock firmware will also work)
I am concerned about bootloader brick ( if any of you run 25.137-33 firmware, can you please share a picture of booloader screen, so that i can check if its the same as 25.137-72-4.)
So my plan is..
Since i have unlocked bootloader,
1) i hope i can flash 25.137-33 ( dont know if it works since i have updated firmware already) .
2) relock bootloader while flashing
3) receive ota update to update the 25.137-33 to 25.137-72-4.
And stay happy with a locked bootloader with complete stock firmware.
I dont know if this plan works, but i hope i can flash the downgraded firmware since i have unlocked bootloader.
So my primay concern and doubts are..
1) can i downgrade if i have an unlocked bootloader
2) is the bootloader of 25.137-33 same as that of 25.137-72-4
Please help me to solve these.
Below is the bootloader screen of my current firmware. 25.137-72-4
Can any one please check if it matches with the firmware 25.137-33
Any help for anyone? Can i downgrade with An unlocked bootloader?
Hi, I have the XT1670 variant, 32gb single sim
Currently running NPP25.137-93 firmware (actually a debloated version of that firmware).
Here's the picture of my bootloader I think it's the same as yours, I'm not sure if you can downgrade the bootloader, I have flashed the NPL25.137-33 several times in my phone and it always gives me error in the two first flash commands, this being "flash partition got.bin and flash bootloader.img"
The phone still reboots and works as it should
So can you downgrade? Yes I have done it and never had a problem
Can you relock your bootloader? I'm not sure
And I'm not sure if bootloader brick is a thing either
I hope this helps
Sorry I cant upload the picture but my bootloader version is: B8.23 (sha-8fcce1f, 2017-08-04 11:32:36)
salsaelpato said:
Hi, I have the XT1670 variant, 32gb single sim
Currently running NPP25.137-93 firmware (actually a debloated version of that firmware).
Here's the picture of my bootloader I think it's the same as yours, I'm not sure if you can downgrade the bootloader, I have flashed the NPL25.137-33 several times in my phone and it always gives me error in the two first flash commands, this being "flash partition got.bin and flash bootloader.img"
The phone still reboots and works as it should
So can you downgrade? Yes I have done it and never had a problem
Can you relock your bootloader? I'm not sure
And I'm not sure if bootloader brick is a thing either
I hope this helps
Sorry I cant upload the picture but my bootloader version is: B8.23 (sha-8fcce1f, 2017-08-04 11:32:36)
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Click to collapse
You mean 25.137-33 is the version you have with b8.23 bootloader? If so its same.. not downgrade. But i dont know why u get flashing error even using same boot loaded.
1) flash partion got.bin - its the file that is responsible for repartitioning the nand memory and allocate partion for system, user data, kernel , radio, and all others..
2) flash bootloader.img - of course its the bootloader.. but how can it be error when u are flashing the same bootloader again
Do u have an unlocked or locked bootloader?
Unlocked bootloader, I have the version 25.137-93 with b8.23 bootloader, before flashing that firmware I had the 25.137-33 one with the same bootloader, there's a thread in the Moto G5 plus forum explaining how you can relock your bootloader, apparently it can be done, you have to relock your bootloader first in order to flash the complete firmware and receive ota updates
salsaelpato said:
Unlocked bootloader, I have the version 25.137-93 with b8.23 bootloader, before flashing that firmware I had the 25.137-33 one with the same bootloader, there's a thread in the Moto G5 plus forum explaining how you can relock your bootloader, apparently it can be done, you have to relock your bootloader first in order to flash the complete firmware and receive ota updates
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if you have 25.137-93 full firmware, can you upload it?
showlyshah said:
if you have 25.137-93 full firmware, can you upload it?
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Sorry I got it from a thread here in XDA but it's a debloated Rom
salsaelpato said:
Sorry I got it from a thread here in XDA but it's a debloated Rom
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Can you link that forum thread? So that i can ask the dev if he have it?
showlyshah said:
Can you link that forum thread? So that i can ask the dev if he have it?
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Click to collapse
Sure here is
https://forum.xda-developers.com/g5/development/rom-debloated-optimized-t3722396

Go back to Stock ROM from Custom ROM (Help)

Hello you beautiful people ,
I recently purchased a Redmi Note 5 AI and i want to unlock the bootloader and flash a custom ROM since i'm not happy with MIUI, i have read about ARB and i'm fully aware that i can't flash an older MIUI ROM with a lower ARB than what i previously had.
But what's absolutely confusing me is if i decide to change my mind, how do i go back to Stock Everything (ROM, Recovery, Bootloader) basically and be able to receive OTA's from Xiaomi normally again? (I tried to search the forums to find an answer but i couldn't find anything so please don't tell me to check the forums).
Download fastboot ROM and flash it using MiFlash software
For more info visit en.miui.com/a-234.html
SunilSuni said:
Download fastboot ROM and flash it using MiFlash software
For more info visit en.miui.com/a-234.html
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Doing that will lock the bootloader and bring back the stock recovery as well, and i'm able to get OTA updates again?
ZozaTermina3or said:
Doing that will lock the bootloader and bring back the stock recovery as well, and i'm able to get OTA updates again?
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You will get option to lock the bootloader or keep the bootloader unlocked
Yes this method will bring stock recovery and you will get OTA updates.
You have to download global ROM to flash it on global variant device
Or China ROM to flash it on Chinese variant device
SunilSuni said:
You will get option to lock the bootloader or keep the bootloader unlocked
Yes this method will bring stock recovery and you will get OTA updates.
You have to download global ROM to flash it on global variant device
Or China ROM to flash it on Chinese variant device
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Click to collapse
Ahh thank you so much ^^, sorry i keep asking way too many questions, but where do i get the option to lock the bootloader again? and if i'm on miui 10.2.20 before custom ROM, i can flash the same MIUI ROM i was on or an older one as long as it has the same ARB value?
and is there a guide on how to flash ROMS and recoveries, because i am extremely confused >.<
ZozaTermina3or said:
Ahh thank you so much ^^, sorry i keep asking way too many questions, but where do i get the option to lock the bootloader again? and if i'm on miui 10.2.20 before custom ROM, i can flash the same MIUI ROM i was on or an older one as long as it has the same ARB value?
and is there a guide on how to flash ROMS and recoveries, because i am extremely confused >.<
Click to expand...
Click to collapse
In MiFlash software. Select clean_all and lock option to lock the bootloader
Yes you can flash 10.2.2 or any older ROM wich has ARB value 4 (you can flash any ROM between 9.5.19 to 10.2.2)
SunilSuni said:
In MiFlash software. Select clean_all and lock option to lock the bootloader
Yes you can flash 10.2.2 or any older ROM wich has ARB value 4 (you can flash any ROM between 9.5.19 to 10.2.2)
Click to expand...
Click to collapse
Thank you so much sir, You are a life saver
I can flash the Custom ROM without any worries now ^^

Revert back to Factory ROM

I am currently using Havoc OS and have TWRP installed.
How do I go back to the latest MIUI 10 Rom for my device (UK Version).
Would the bootloader still be unlocked after process?
Thanks
Flash the phone with official Xiaomi PC software, bootloader will lock itself afterwards, but you can unlock it right back without waiting period.
owen1978 said:
I am currently using Havoc OS and have TWRP installed.
How do I go back to the latest MIUI 10 Rom for my device (UK Version).
Would the bootloader still be unlocked after process?
Thanks
Click to expand...
Click to collapse
visit this en.miui.com/a-234.html to flash MIUI fastboot rom
pinx said:
Flash the phone with official Xiaomi PC software, bootloader will lock itself afterwards, but you can unlock it right back without waiting period.
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Flashing official rom will not lock bootloader, you will get option to retain bootloader unlock or to lock bootloader in MiFlash software

Question Flash official redmi k40 firmware on poco f3 via fastboot ?!

can you please answer me , if i can flash the Official Firmware (enhanced edition 12.5.6) of the Redmi K40 on the Poco F3 using Mi_Flash_Tool with unlocked bootloader in Fastboot Mode ?!
Thanks in advance
i cant see any issue as long as flash all & lock is not selected. Why not just install Miui vn or Eu they are based on china.
Yes you can but dont lock bootloader.
sam00561 said:
i cant see any issue as long as flash all & lock is not selected. Why not just install Miui vn or Eu they are based on china.
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thanks for replying , i want to flash it because it is the factory enhanced edition not based on it .
hexisg said:
Yes you can but dont lock bootloader.
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thanks for mentioning that , it is really important cause it will brick my device , but why ? they are the same phone and hardware ?
The ROM miui vn is also the enhanced edition i believe. Regarding flashing the official once via mib flash in sure it's fine as long as you don't lock bootloader with it.
mhocine47 said:
thanks for mentioning that , it is really important cause it will brick my device , but why ? they are the same phone and hardware ?
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If u lock bootloader after flash, the motherboard crash because not same region that he configurated. So if u let him unlock bootloader, ure device won't think about region and let u boot into ure china rom
X0PIRAT3 said:
If u lock bootloader after flash, the motherboard crash because not same region that he configurated. So if u let him unlock bootloader, ure device won't think about region and let u boot into ure china rom
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it is not about the motherboard , it is about the bootloader because it the system check for your device and its security , it does not crash it will not boot because the bootloader cannot accept such system to run on that partition except the official one for the motherboard
So, it is mandatory to unlock the bootloader even when you are flashing stock firmware?
Just don't lock it again with other firmware?
I'm currently using Global MIUI 12.5.4 version but was thinking of flashing Mi 11x firmware.
jpdediego said:
So, it is mandatory to unlock the bootloader even when you are flashing stock firmware?
Just don't lock it again with other firmware?
I'm currently using Global MIUI 12.5.4 version but was thinking of flashing Mi 11x firmware.
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Click to collapse
No, It only applies here where the firmware wasn't made for the device but if you're going to flash a stock firmware that was made for your device the you don't need to unlock it
Yxles said:
No, It only applies here where the firmware wasn't made for the device but if you're going to flash a stock firmware that was made for your device the you don't need to unlock it
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Thanks

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