How to relock bootloader? - Huawei Mate 20 Pro Questions & Answers

I impulsively unlocked the boot-loader on my Mate 20 Pro last night because Funky Huawei was selling the codes for $20. Today I can't really think of a good reason I actually need the bootloader unlocked since I have no interest in rooting my phone and there are update methods for manually flashing firmware that don't require an unlocked bootloader. In fact, the tool posted on XDA for updating firmware with an unlocked bootloader apparently requires that you be rooted to use it.
Is there a way to relock the bootloader?
The only mention I could find in these threads was someone who said you need to factory reset the phone and then go back into fast-boot. I don't think the person who wrote that even tried it and that he was just making a generalization.
Does anyone know if there are actual steps that relock the bootloader without bricking the phone--which the e-recovery restore method might do since it will try to install an older firmware than is currently on my phone.
I might just keep it unlocked anyway but I was curious if there was a known relock method that works on this phone.

jhs39 said:
I impulsively unlocked the boot-loader on my Mate 20 Pro last night because Funky Huawei was selling the codes for $20. Today I can't really think of a good reason I actually need the bootloader unlocked since I have no interest in rooting my phone and there are update methods for manually flashing firmware that don't require an unlocked bootloader. In fact, the tool posted on XDA for updating firmware with an unlocked bootloader apparently requires that you be rooted to use it.
Is there a way to relock the bootloader?
The only mention I could find in these threads was someone who said you need to factory reset the phone and then go back into fast-boot. I don't think the person who wrote that even tried it and that he was just making a generalization.
Does anyone know if there are actual steps that relock the bootloader without bricking the phone--which the e-recovery restore method might do since it will try to install an older firmware than is currently on my phone.
I might just keep it unlocked anyway but I was curious if there was a known relock method that works on this phone.
Click to expand...
Click to collapse
Have a look at my post in thread below .. have done this method a few times and works for me.
https://forum.xda-developers.com/ma...ocking-bootloader-magisk-root-t3885422/page22

jhs39 said:
I impulsively unlocked the boot-loader on my Mate 20 Pro last night because Funky Huawei was selling the codes for $20. Today I can't really think of a good reason I actually need the bootloader unlocked since I have no interest in rooting my phone and there are update methods for manually flashing firmware that don't require an unlocked bootloader. In fact, the tool posted on XDA for updating firmware with an unlocked bootloader apparently requires that you be rooted to use it.
Is there a way to relock the bootloader?
The only mention I could find in these threads was someone who said you need to factory reset the phone and then go back into fast-boot. I don't think the person who wrote that even tried it and that he was just making a generalization.
Does anyone know if there are actual steps that relock the bootloader without bricking the phone--which the e-recovery restore method might do since it will try to install an older firmware than is currently on my phone.
I might just keep it unlocked anyway but I was curious if there was a known relock method that works on this phone.
Click to expand...
Click to collapse
Use dload method, but pba that will erase everything like your 1st setting of your phone. Phone will be locked again, FRP will still unlocked.
Sent from my LYA-L29 using Tapatalk

does dload method altso come with recovery_ramdisk fixed? for us that have modified it for root or twrp??
So that the device becomes out of the box like new?

Yes, recovery_ramdisk back to stock with dload method
Sent from my LYA-L29 using Tapatalk

i can confirm dload method lock back the bootloader.
i had install an alternate fw but was not satisfied cause too much features were not working, i used first erecovery to download official fw but unlock bl was still present. then i try dload and phone was completly reset with bl locked.

dload method isn't working for me. I extracted the UPDATE.APP from the firmware version that is currently installed on my phone (using the update_full_base version), created a dload folder on my external card, copied the UPDATE.APP into that folder and then did the dial code and selected update from memory card. My phone reboots and then I get an error that says that the update failed.
Do I need to use the UPDATE.APP from a specific build to get this to work?

I installed firmware via the Funky Huawei method. It seems to have relocked the bootloader because the warning about the bootloader being unlocked doesn't come up when the phone boots but the data on my phone wasn't erased. Can the bootloader be relocked without erasing all the data on the phone? If so this is the first I've heard of it.

jhs39 said:
I installed firmware via the Funky Huawei method. It seems to have relocked the bootloader because the warning about the bootloader being unlocked doesn't come up when the phone boots but the data on my phone wasn't erased. Can the bootloader be relocked without erasing all the data on the phone? If so this is the first I've heard of it.
Click to expand...
Click to collapse
Go to fastboot mode and check if bootloader is locked again.
Sent from my LYA-L29 using Tapatalk

ubersapian said:
Have a look at my post in thread below .. have done this method a few times and works for me.
https://forum.xda-developers.com/ma...ocking-bootloader-magisk-root-t3885422/page22
Click to expand...
Click to collapse
Will we able to reclaim warranty after relock? Anyway the service guys would be able to know that the bootloader was unlocked before?

Soo what is the legit way to relock the bootloader and the FRP?
is the FRP from stock/defualt locked?
Verstuurd vanaf mijn LYA-L29 met Tapatalk

Related

Unlocking bootloader from Live with Walkman

I researched about the matter, and reached some conclusions:
- I don't want to use the TEST POINTER method, I really don't care about OTA updates or Track ID app (as far as I know there are no more consequences), Shazam and Soundhound do the same
- I would like to unlock the bootloader in some manner that, if I need to relock the warranty will still be valid (same goes for root, but I guess flashing an original firmware unroots the device)
That said, found the official instructions to unlock the BL, but still have the main question: is it the procedure completely reversible? Also, is it free?
Thanks in advance. Also really appreciate if someone corrects something wrong I said.
Maxxd01 said:
I researched about the matter, and reached some conclusions:
- I don't want to use the TEST POINTER method, I really don't care about OTA updates or Track ID app (as far as I know there are no more consequences), Shazam and Soundhound do the same
- I would like to unlock the bootloader in some manner that, if I need to relock the warranty will still be valid (same goes for root, but I guess flashing an original firmware unroots the device)
That said, found the official instructions to unlock the BL, but still have the main question: is it the procedure completely reversible? Also, is it free?
Thanks in advance. Also really appreciate if someone corrects something wrong I said.
Click to expand...
Click to collapse
you can still relock your bootloader and receive official sony updates, but the problem is, you loose DRM(in which if sony finds out, you still lose warranty).
i found this thread and said that DRM cannot be restored :/
I don't know about non free relocking if it will be able to restore DRM though.
oh and by the way, this thread provides the easiest way to unlock and relock your bootloader for free.
goodluck and enjoy
DRM cannot be restored at all.
Install TrackID from market and it will work.
Bootloader can be relocked, doesn't matter how you unlocked.
And yes, it is free.
Sent from my WT19i using xda premium
Someguyfromhell said:
DRM cannot be restored at all.
Install TrackID from market and it will work.
Bootloader can be relocked, doesn't matter how you unlocked.
And yes, it is free.
Sent from my WT19i using xda premium
Click to expand...
Click to collapse
Ok, so I suppose the DRM Keys only affect the OTA updates (how should we care if we are unlocking BL for custom ROMs
So, I suppose if I have a problem on my Live (but it still turns on), I apply an OFW and then relock it, it's a matter of luck if the techical assistance is going to check if the DRM is still valid or not.
What method do you advice to unlock the BL?
Maxxd01 said:
Ok, so I suppose the DRM Keys only affect the OTA updates (how should we care if we are unlocking BL for custom ROMs
So, I suppose if I have a problem on my Live (but it still turns on), I apply an OFW and then relock it, it's a matter of luck if the techical assistance is going to check if the DRM is still valid or not.
What method do you advice to unlock the BL?
Click to expand...
Click to collapse
Method, pick which is better for you. I used official method, no messing with cables.
Sent from my WT19i using xda premium
Unlock it the way you prefer to it does not matter it will lose warranty any way it is just luck if they will check it or not at the service center. Any way it is really hard to completely brick your phone unless you don't know what you are doing. The main difference is with the test point method you are able to update using seus without problems and it looks more complicated than it really is I only used a clip
just a question about unlocking thru official method.
since you would have to get the unlock key directly from Sony.
would they be able to track your phone since you will be giving them some details like your name, IMEI, email etc. to get the unlock code?
do the service centers have access to that database?
There are no Sony Mobile Service Centers, phones need to be taken back to shop and they use service of specific mobile repair shop.
Depending on what reason you need to take it back, they might want to check it or not. No one has so far done this, so we have no information.
What is DRM and Track ID ?
I want to unlock bootloader my phone, but I am still confused, what is the risk of a official bootloader from sony ? What is DRM and Track ID ? what is its usefulness for wt19i?
sorry my english is not good
dianfajar said:
I want to unlock bootloader my phone, but I am still confused, what is the risk of a official bootloader from sony ? What is DRM and Track ID ? what is its usefulness for wt19i?
sorry my english is not good
Click to expand...
Click to collapse
There is no risk either way the difference is that with the official method you will lose your drm (Digital rights management) and the official support of track id (the app from se that you use to search for the info of a song playing in the radio or the tv etc.) meanwhile using the test point method you will not lose them. If you want to install a custom rom like cm9 or miui you need to unlock your bootloader to be able to flash the custom kernels those roms need.
can you save DRM with CWM backup before unlocking bootloader?
manilu001 said:
can you save DRM with CWM backup before unlocking bootloader?
Click to expand...
Click to collapse
Nope, DRM is not saved in CWM backup.
Sent from my WT19i using xda premium
Thanks in advance for all helpfull answers.
I just want to understand the following. Some Live's come with "unlock bootloader allowed"="no" others ="yes". What does that means and more important: what are the implications?
I cannot understand the difference because as fair as I understand right now, all live's (branded/sim unlocked or not) are unlockable (referring to bootloader).
Maxxd01 said:
Thanks in advance for all helpfull answers.
I just want to understand the following. Some Live's come with "unlock bootloader allowed"="no" others ="yes". What does that means and more important: what are the implications?
I cannot understand the difference because as fair as I understand right now, all live's (branded/sim unlocked or not) are unlockable (referring to bootloader).
Click to expand...
Click to collapse
When they come with boot loader unlock : no it is a branded sim locked phone in which case you can unlock bootloader but you will have no access to fastboot meaning you are unable to flash a custom kernel, also there will be no way you can officially unlock the bootloader so will have to use the test point method and of course you will need to pay to fully unlock your phone to be able to access fastboot and flash custom kernels.
Did I miss something??
ginryu said:
When they come with boot loader unlock : no it is a branded sim locked phone in which case you can unlock bootloader but you will have no access to fastboot meaning you are unable to flash a custom kernel, also there will be no way you can officially unlock the bootloader so will have to use the test point method and of course you will need to pay to fully unlock your phone to be able to access fastboot and flash custom kernels.
Did I miss something??
Click to expand...
Click to collapse
So, for sim locked branded phones ("no")
- To unlock the bootloader: test point method
- Access fastboot: use (and pay) through wotan server
Am I right? I never though that was two different problems.
Maxxd01 said:
So, for sim locked branded phones ("no")
- To unlock the bootloader: test point method
- Access fastboot: use (and pay) through wotan server
Am I right? I never though that was two different problems.
Click to expand...
Click to collapse
I'm not really sure about Wotan server however I'm pretty sure about setool and omnius and if you are willing to pay the phone will be fully unlocked (bootloader, sim and fastboot) with one procedure using the test point method.
ginryu said:
When they come with boot loader unlock : no it is a branded sim locked phone in which case you can unlock bootloader but you will have no access to fastboot meaning you are unable to flash a custom kernel, also there will be no way you can officially unlock the bootloader so will have to use the test point method and of course you will need to pay to fully unlock your phone to be able to access fastboot and flash custom kernels.
Did I miss something??
Click to expand...
Click to collapse
So, I'm curious, if I have branded sim lock Live ("no" bootloader) can I install an original firmware without using an official channel? Do I need fastboot access?
I'm asking because I'm almost sure that my carrier will not update the Live to 4.0, so I suppose I have to use some other tool in order to install it.
Maxxd01 said:
So, I'm curious, if I have branded sim lock Live ("no" bootloader) can I install an original firmware without using an official channel? Do I need fastboot access?
I'm asking because I'm almost sure that my carrier will not update the Live to 4.0, so I suppose I have to use some other tool in order to install it.
Click to expand...
Click to collapse
you can debrand (install a generic firmware) your phone using wotan server for free and as i know it will also change your product code so next time and official sony update is available your phone will get it.
thancks! its helps...
another noob question from me
can i relock BL from test point method?
n do i have to flash stock kernel before relock?
i'm using rage kernel right now.
sent from my Walkman

[Q] Help to unroot htconex+

Hi everyone, i 'm going to be concise. I own an HTC onex+ international version (it should be no brand) and i would like to unroot it and reset to factory for a warranty issue. I'm extremely noob so i would like, if it's possibile, the fastest, easyest and safest way to do so.
On internet i found several guides about it as http://onexroot.com/one-x-unroot/how-to-unroot-rooted-htc-one-x/ or http://theunlockr.com/2012/12/28/how-to-unroot-the-htc-one-x-2/ BUT i found also an xda tool http://forum.xda-developers.com/showthread.php?t=1870652&nocache=1 that sounds appropriate to me; i read on other forum that i need some kind of extra instrument like boot.img
There are some things to take note of. The boot.img and HBoot image flashing requires users to get their own files as those are device specific and aren’t included
Click to expand...
Click to collapse
actually i have no idea where get it and how use it. I would be very gratefull if some of you could explain to me step by step how to do the unroot.
ps. i just rooted and put inside the cmw under the instruction of friend of mine but i don't really understand how i did it.
thank you in advance.
relock bootloader and install RUU and you are back on Stock
but would you be back on stock for a warranty issue, you didn't must do that.
warranty has nothing to do with your firmware or root or bootloader unlock.
they would be erase all at your phone and flash the RUU
skdubg said:
relock bootloader and install RUU and you are back on Stock
Click to expand...
Click to collapse
thank you for your reply but the problem is that actually i don't know how to relock booloader and what RUU is; that's why i was lokking for a step by step guide. I may follow and understand a little the guide of before but i'm not safe that it works with htc onec+ too.
but would you be back on stock for a warranty issue, you didn't must do that.
warranty has nothing to do with your firmware or root or bootloader unlock.
Click to expand...
Click to collapse
really? i belived that an "unlocked" phone was an enough reason to invalidate the warranty isn't it?
kadakar said:
really? i belived that an "unlocked" phone was an enough reason to invalidate the warranty isn't it?
Click to expand...
Click to collapse
if you dont touch the bootloader it says: LOCKED
if you unlocked bootloader it says: UNLOCKED
if you relocked bootloader it says: RELOCKED
we can never go back to LOCKED (RELOCKED is technical the same like LOCKED, but it shows as RELOCKED) all people can see that the bootloader was touched by the user
so it cant the reason for that
to relock:
boot into bootloader
and execute this command in fastboot:
fastboot oem lock
now you can install your latest RUU (RUU is the Stock Firmware from HTC as *.exe to install from Windows [depends on your CID])

[Q] Unlock bootloader to root?

I thought it was necessary to unlock the bootloader on android phones before i could root them and flash different roms. A buddy of mine had rooted his old s3 but forgot to unlock the bootloader, so when he tried restarting it, it soft bricked. For the longest time I thought you had to unlock the bootloader then root the phone in order to flash custom roms, have I been wrong all this time?
Think of the Loki workaround as a way to trick the bootloader into flashing improperly signed files. Its like using a credit card on the bolt of a locked door. The door is still locked but you get through anyway.
brizey said:
Think of the Loki workaround as a way to trick the bootloader into flashing improperly signed files. Its like using a credit card on the bolt of a locked door. The door is still locked but you get through anyway.
Click to expand...
Click to collapse
And what are the risks of using the loki tool if you use it correctly? if there is an OTA update to the phone, will it mess it all up?
You don't you the tool...the developers do. And technically, it is only used for flashing a recovery and flashing ROMS with the recovery. You can root without unlocking the bootloader because there is an pre-release official rootable kernel than can be flashed with Odin. It flashes because it is legit.
So I should be able to just go to the how to root page on here http://forum.xda-developers.com/showthread.php?t=2290798 and follow the instructions and flash one of the roms as usual?
yes,go ahead

[Q] Xperia Z Ultra bootlloader/Root questions

Hello everyone.
I had posted this in the Z forum, not realizing there was a Z Ultra forum. So I will just quote my previous post and add some info at the end:
Hello guys. New guy here with an Xperia Z Ultra phone.
I'm trying to load the Paranoid Android custom ROM.
Had a couple of questions:
1. I went thru Sony's instructions to unlock the bootloader. When I ran the fastboot -i 0x0fce oem unlock (e-mail code), the first error message I got was "FAILED - Remote - Command did not succeed". So I tried the exact command again, and then I got "FAILED - Remote: The device is already rooted".
I have searched high and low, and cannot seem to find any way to verify that the bootloader is now in fact unlocked.
2. Reading the instruction on how to install CWM/TWRP recovery menus, Every single list of instructions includes the following "This tutorial is only for Sony Xperia Z Ultra with 510 and 493 LTE firmware. Do not use it for any other carriers or variants"
Again, I have searched high and low to find a way to confirm what firmware version I have. All I know is I have the C6806 model, with the build number: 14.2.A.0.290
So can someone please help out a very confused guy here? I don't want to brick my phone by accident
So far it's still working ok
Click to expand...
Click to collapse
So far, after doing some major searching, I seem to have found that I currently have "290" Firmware, and that this Firmware is currently NOT able to be rooted. Is this correct?
Also, I still have not found a way to verify wether the boot loader actually did unlock or not. From what I have been able to read, it seems that if a proper boot loader was in fact, unlocked, it would have wiped all the data on my phone along with the SD card data.
So far, it seems everything on my phone is intact. So does this mean the boot loader unlock command failed for me? If so, why did I get the reply "this device is already rooted?"
I can't believe how difficult it is to root a damn Android phone! Jailbreaking an Apple device is 10 times easier!
First of all, it's usually pretty easy to root Android devices. In most cases it's only a simple click, but sony has done a good(?) job at fixing exploits, so it does it much harder for us.
Second, you can check if your bootloader is locked or unlocked by opening the dialer and insert *#*#7378423#*#*, go to "Service Info" and then "Configuration". If your bootloader is unlocked, it should say "Rooting status: Bootloader unlocked: Yes". It's easier to use Flashtool to unlock the bootloader if you're having issues using a terminal.
You'll find the rest here (including bootloader unlocking). If you need some help, ask in that thread.
If you aren't boot loader unlocked then "BACKUP TA PARTITION" from My Lord's guide @LordManhattan
Just incase you need to re-lock it for service
LordManhattan said:
First of all, it's usually pretty easy to root Android devices. In most cases it's only a simple click, but sony has done a good(?) job at fixing exploits, so it does it much harder for us.
Second, you can check if your bootloader is locked or unlocked by opening the dialer and insert *#*#7378423#*#*, go to "Service Info" and then "Configuration". If your bootloader is unlocked, it should say "Rooting status: Bootloader unlocked: Yes". It's easier to use Flashtool to unlock the bootloader if you're having issues using a terminal.
You'll find the rest here (including bootloader unlocking). If you need some help, ask in that thread.
Click to expand...
Click to collapse
First of all it' pretty damn complicated and unrewarding to root a Sony device. Not all android but Sony definately. We checked, bootloader is unlockable. We unlocked and relocked bootloader prevoiusly because there is no robust, easy-to-install ROM for ZU. But time to time we try to root it.
Now, the question is the same: what should we do to re-unlock the bootloader if anything is OK, but flashtool says "Command did not succeed" for the first time and "Device is already rooted" for subsequent times at unlocking?
Please write some advice about the question, not about TA backup and your success. Thx!
Champdor said:
First of all it' pretty damn complicated and unrewarding to root a Sony device. Not all android but Sony definately. We checked, bootloader is unlockable. We unlocked and relocked bootloader prevoiusly because there is no robust, easy-to-install ROM for ZU. But time to time we try to root it.
Now, the question is the same: what should we do to re-unlock the bootloader if anything is OK, but flashtool says "Command did not succeed" for the first time and "Device is already rooted" for subsequent times at unlocking?
Please write some advice about the question, not about TA backup and your success. Thx!
Click to expand...
Click to collapse
Oh, are we demanding help now?
Bootloader unlocking is a straight forward process. I've had a couple of strange errors in Flashtool while trying to unlock the bootloader, but just close Flashtool and try again. Also be sure to be on the latest version of Flashtool.
LordManhattan said:
Oh, are we demanding help now?
Bootloader unlocking is a straight forward process. I've had a couple of strange errors in Flashtool while trying to unlock the bootloader, but just close Flashtool and try again. Also be sure to be on the latest version of Flashtool.
Click to expand...
Click to collapse
No sir, not at all. I wrote please, no demanding. Well yes, I'm a bit picky because there were no answer and I usually find some on XDA. Besides I used custom roms on Samsung devices for years (SGS2, SGN, SGN2) and I was disapponted when I bought my XZU that there are very few roms and I couldn't use them (I managed with very hard work to go back to stock in 9 hours after unsuccesful flashing).
So there is some basic problem every time. Like trying to root but cannot re-unlock because of some mysterious errors with no solutions.
Enough of my problems, your answer is much appreciated, will try to re-unlock some time. Thx!
Champdor
Champdor said:
No sir, not at all. I wrote please, no demanding. Well yes, I'm a bit picky because there were no answer and I usually find some on XDA. Besides I used custom roms on Samsung devices for years (SGS2, SGN, SGN2) and I was disapponted when I bought my XZU that there are very few roms and I couldn't use them (I managed with very hard work to go back to stock in 9 hours after unsuccesful flashing).
So there is some basic problem every time. Like trying to root but cannot re-unlock because of some mysterious errors with no solutions.
Enough of my problems, your answer is much appreciated, will try to re-unlock some time. Thx!
Champdor
Click to expand...
Click to collapse
Oh, i get that. I came from Samsung myself, and this is my first Sony device ever, so I've had some issues myself. I've gotten the same error message(s) as you before, and i think i restarted Flashtool and rebooted my Ultra and it was back to normal again - i think, but it "fixed itself" after trying a couple of times, so don't give up. It's also important to always be on the latest version of Flashtool.
It would also help us if you could tell us what you're trying to achieve, so you don't end up spending 9 hours on something that takes 5 minutes
@Champdor
From what I can make out you have never managed root your phone or back up the TA. If the latter is true then there is very little point in relocking the bootloader.
Yes the process is a little harder than Samsung, but the last device I rooted was a ZTE, and that was even harder to root and flash from what I can remember (yes this is my first Sony device as well, and I will buy another...)
Take you time and read the stickies that we have written and all should go well. Don't be afraid to ask (intelligent) questions if you get stuck, and read some more
HELP!
i am in same situation as OP
in past, i unlocked the bootloader then i relocked.
now I like to re-unlock. but I get same errors (i.e. 'command did not suceed' or 'device is already rooted')
i check service menu and it says 'bootloader unlock allowed: yes' meaning its not unlocked yet.
i use latest flashtool and try to unlock but i get error
can any expert help!?
thanks for your help
corrado85 said:
HELP!
i am in same situation as OP
in past, i unlocked the bootloader then i relocked.
now I like to re-unlock. but I get same errors (i.e. 'command did not suceed' or 'device is already rooted')
i check service menu and it says 'bootloader unlock allowed: yes' meaning its not unlocked yet.
i use latest flashtool and try to unlock but i get error
can any expert help!?
thanks for your help
Click to expand...
Click to collapse
I have not had this error so have not tested this, but what happens if you flash a full FTF and wipe everything then try to unlock the BL?
And remember that you can take a backup of the unlocked BL (re member to name it as such) and just flash that to unlock again. Doing it this way you don't get the format that happens when using the unlock code.
I followed this post to downgrade, root, i use Backup TA v9.10 to backup DRM Keys, use Flashtool 0.9.14.0 to unlock Bootloader, then to flash other Rom's (stock and customs), came back to Stock Rom .681, relock the Bootloader with Flastool 0.9.15.0 flashed the last .757 and unlock the Bootloader again with no kind of problems using Flashtool 0.9.15.0....
blueether said:
I have not had this error so have not tested this, but what happens if you flash a full FTF and wipe everything then try to unlock the BL?
And remember that you can take a backup of the unlocked BL (re member to name it as such) and just flash that to unlock again. Doing it this way you don't get the format that happens when using the unlock code.
Click to expand...
Click to collapse
I just flashed C6802 .757 FW using flashtool, and i get same issue
is there a tutorial about backup of the unlocked BL? assuming you meant I have to have own device backup..
this is so confusing at the end :crying:
corrado85 said:
I just flashed C6802 .757 FW using flashtool, and i get same issue
Click to expand...
Click to collapse
I dont know what else to suggest other than rebooting every thing and reinstalling all the drivers
is there a tutorial about backup of the unlocked BL? assuming you meant I have to have own device backup..
this is so confusing at the end :crying:
Click to expand...
Click to collapse
You just back it up as you would for a locked BL. Just remember to make sure you name them well so you know which is the locked one and the unlocked one.
NEVER use a TA backup from another phone, you WILL HARD BRICK IT
Lc1975 said:
I followed this post to downgrade, root, i use Backup TA v9.10 to backup DRM Keys, use Flashtool 0.9.14.0 to unlock Bootloader, then to flash other Rom's (stock and customs), came back to Stock Rom .681, relock the Bootloader with Flastool 0.9.15.0 flashed the last .757 and unlock the Bootloader again with no kind of problems using Flashtool 0.9.15.0....
Click to expand...
Click to collapse
problem is i get message 'device already rooted' when i enter my bootloader key using flashtool as well
---------- Post added at 03:42 PM ---------- Previous post was at 03:40 PM ----------
blueether said:
I dont know what else to suggest other than rebooting every thing and reinstalling all the drivers
You just back it up as you would for a locked BL. Just remember to make sure you name them well so you know which is the locked one and the unlocked one.
NEVER use a TA backup from another phone, you WILL HARD BRICK IT
Click to expand...
Click to collapse
ahh ok, in that case, i do not have a backed up unlocked bootloader rom
corrado85 said:
problem is i get message 'device already rooted' when i enter my bootloader key using flashtool as well
---------- Post added at 03:42 PM ---------- Previous post was at 03:40 PM ----------
ahh ok, in that case, i do not have a backed up unlocked bootloader rom
Click to expand...
Click to collapse
Did you tried:
*#*#SERVICE#*#*
and confirm that the Bootloader is unlock?
Lc1975 said:
Did you tried:
*#*#SERVICE#*#*
and confirm that the Bootloader is unlock?
Click to expand...
Click to collapse
It states
Rooting status
Bootloader unlocked allowed:Yes
corrado85 said:
It states
Rooting status
Bootloader unlocked allowed:Yes
Click to expand...
Click to collapse
When you try to unlock the Bootloader.. What button or icon do you click?
The one who has the padlock or BLU?
Lc1975 said:
When you try to unlock the Bootloader.. What button or icon do you click?
The one who has the padlock or BLU?
Click to expand...
Click to collapse
I choose which states 'BLU'
actually I do get the option to click on padlock but i dont know what to do there
corrado85 said:
I choose which states 'BLU'
actually I do get the option to click on padlock but i dont know what to do there
Click to expand...
Click to collapse
The padlock is to root the device..
Sorry but i can't help you much more then this... I don't have much knowledge to go foward...
Try to start from scratch..
Downgrade...
Root...
Try to unlock the Bootloader
And update to the latest...
root didnt work
Hello , i want to root my phone z ultra 6833 .757 i watch this video youtube . com/watch?v=uFSeSe8gQOY
i unlock bootloader after this install 757.img by flashtool so i can open recovery but after this i didnt find the same file he run i try run supersu.zip but the phone havent rooted plz what the problem

[ADVICE] Unlock before N update!

Cleaning this up and clarifying as my original post was vague:
It is recommended that you unlock your bootloader before the 7.0 Nougat update. Although it will still be possible the process will be more difficult and risky afterwards.as you will need to use one of the edl mode tools (axon7backup, axom7tool).
The easiest way is to download this kit f you have the A2017U: (I can't speak to other models) (This kit and instructions are thanks to @jcadduono)
https://build.nethunter.com/misc/axon7/AXON7-A2017U-BL-UNLOCK-KIT.zip
https://build.nethunter.com/misc/axon7/INSTRUCTIONS.txt
The basic steps, which the above zip with take you through in detail are:
1. Flash Official B20 , enable OEM UNLOCKING after flashing.
2. Flash BLFastboot zip provided by ZTE when they had unlock method.
3. Enable OEM UNLOCKING in Developers Option
4. Boot to Bootloader
5. type : fastboot oem unlock
6. Done
Note: If you do not have the OEM UNLOCKING flag set in developer options you will get a soft brick. Also bear in mid this will wipe data.
All that being said I've heard Nougat to is going to be great from those in the know. In their words ”Well worth the wait! Hang in there!” from a HIGHLY credible source.
Why would anyone relock before update? I do agree anyone who wants to unlock should do it now.
lokissmile said:
For anyone looking to bootloader unlock, I've heard that the methods might change when the N update rolls out. It's a major update and although I personally don't have N and can't get a direct answer because those who know for sure are under NDA. I can tell you that the advice given to me is to not re-lock. So if you are thinking of unlocking your bootloader I'd do it soon while the methods are stable. Google confirmed that daydream is certified in an upcoming update so the daydream version of the stock ROM has been through googles QA. Might as well get ready now, we will probably have another surge of custom ROMS shortly after. I'm just sharing what I think is a best practice.
Click to expand...
Click to collapse
OK, so just to make it quick, for everyone, unlock your bootloader sooner than later. It is safe since you can revert it to a locked state at any time later.
lafester said:
Why would anyone relock before update? I do agree anyone who wants to unlock should do it now.
Click to expand...
Click to collapse
I do it on occasion to test things I'm working on. Better to warn people who might do it to get PoGo or SafetyNet working I figured.
lokissmile said:
I do it on occasion to test things I'm working on. Better to warn people who might do it to get PoGo or SafetyNet working I figured.
Click to expand...
Click to collapse
No need to bootloader lock an Axon 7 to get SafetyNet (Android Pay, PoGo, etc). Just do it the XDA way. But never relock!!!!
Could one of you guys explain whats so dangerous about relocking bootloader since u seem to know something I don't.
I have unlocked and relocked my bootloader several times by fastboot oem lock and restoring my stock fbop partition.
Have I done something wrong?
Regards,
mischa_martin
mischa_martin said:
Could one of you guys explain whats so dangerous about relocking bootloader since u seem to know something I don't.
I have unlocked and relocked my bootloader several times by fastboot oem lock and restoring my stock fbop partition.
Have I done something wrong? [emoji14]
Regards,
mischa_martin
Click to expand...
Click to collapse
Read the OP.
I think what the op is trying to say is that by unlocking the bootloader you won't get ota updates. You would need to wait until a twrp flashable update is out or a rom running Android 7.
stevecaboose said:
I think what the op is trying to say is that by unlocking the bootloader you won't get ota updates. You would need to wait until a twrp flashable update is out or a rom running Android 7.
Click to expand...
Click to collapse
That's how it's been since modifying the bootloader was a thing. Unlocked bootloader = no OTA.
tzbigworm said:
That's how it's been since modifying the bootloader was a thing. Unlocked bootloader = no OTA.
Click to expand...
Click to collapse
@stevecaboose
Unlocking Bootloader = Yes to OTA's.
Modding System and Boot = NO OTA's
hope that clear things up.
Close enough lol!
To be clear, it would be best to unlock before N is pushed out. I have it on good authority that unlocking your bootloader after you update to N will be more difficult and risky. Relocking would put you in the same situation. It's trivial to return to stock system+boot with an unlocked bootloader and TWRP and then the OTA will come through just fine. Or you can just wait for the TWRP flashable N stock ROM.
So to be clear, since I'm not 100% sure what affects the "system" and "boot" areas: I can unlock my BL using only guide 2 in this link ( https://forum.xda-developers.com/axon-7/how-to/guide-install-twrp-unlock-bl-flash-t3517379 ) and still get OTAs? If I install TWRP does that make me OTA-ineligible?
ScaryBugThing said:
So to be clear, since I'm not 100% sure what affects the "system" and "boot" areas: I can unlock my BL using only guide 2 in this link ( https://forum.xda-developers.com/axon-7/how-to/guide-install-twrp-unlock-bl-flash-t3517379 ) and still get OTAs? If I install TWRP does that make me OTA-ineligible?
Click to expand...
Click to collapse
TWRP/BL unlock doesn't affect OTA, ROOT does.
raystef66 said:
TWRP/BL unlock doesn't affect OTA, ROOT does.
Click to expand...
Click to collapse
You're totally wrong there,
TWRP will affect OTA's if the OTA need to check/patch recovery, BUT been Bootloader Unlock will NOT effect OTA.
To manage a clean/successful OTA's installation, you need to be FULL STOCK. (System, boot, Recovery, aboot if the OTA need to patched).
I think the OP was trying to say that it's possible current tools will not work to unlock the bootloader after the 7.x ota is installed.
DrakenFX said:
You're totally wrong there,
TWRP will affect OTA's if the OTA need to check/patch recovery, BUT been Bootloader Unlock will NOT effect OTA.
To manage a clean/successful OTA's installation, you need to be FULL STOCK. (System, boot, Recovery, aboot if the OTA need to patched).
Click to expand...
Click to collapse
I'm not fully agreed with that. You can install OTA's when you receive it, download it, install it when first booted into twrp cache. Only if you're not rooted. When you're rooted first unroot and in principle this should work.
There are several cases on internet about that. Even I did it with an unrooted but TWRP-ed Zopo C2. Received an OTA and installed it.
Im always glad to learn but IMO there are some possibilities to do the ota after all. But I am willing to accept it's a general fact that twrp could affect the normal OTA.
Edit : let's wait and see when B10 is rolling out and if I get a notification about that and if I can install it as a normal OTA(not with SD) with TWRP. Keep you updated:cyclops:
Noob here, forgive me ...
So what is the best way to only unlock bootloader without flash twrp?
A2017U, B29.
Thanks
eladmitz said:
Noob here, forgive me ...
So what is the best way to only unlock bootloader without flash twrp?
A2017U, B29.
Thanks
Click to expand...
Click to collapse
I`m on the same boat. What should be the safer procedure to unlock BL an still get the N OTA?
eladmitz said:
Noob here, forgive me ...
So what is the best way to only unlock bootloader without flash twrp?
A2017U, B29.
Thanks
Click to expand...
Click to collapse
felipe.vella said:
I`m on the same boat. What should be the safer procedure to unlock BL an still get the N OTA?
Click to expand...
Click to collapse
1- Download Official B20 from ZTE SITE (look Software Updates for the 6gb variant)
2- look in the forum for the B20fastboot zip file
3- Move both files to your SDCARD.
4- Enable OEM Unlocking under Developers Option
5- boot to stock recovery.
6- Install B20 official update via SDCARD (this will wipe Data)
7- boot and re-enable OEM Unlocking
8- boot to recovery and install B20fastboot zip
9- boot to Bootloader and Unlock bootloader using this command.
Code:
fastboot oem unlock
If I remember correctly will reboot and factory reset the device , you'll need to re-enable OEM UNLOCKING and boot to Bootloader to flash TWRP 3.0.3 USING fastboot commands

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