Relock bootloader - Xperia Z4/Z3+ Q&A, Help & Troubleshooting

Can someone please help me how to relock bootloader.
I tried relocking using flashtool but my screen wont turn on. It would only vibrate. But if i unlock it the phone would open. Can simebody help me. I am really hoping for an answer
Im on 7.1.1. .160 buildnumber rooted unlocked bootloader.

man, u didnt find this thread? https://forum.xda-developers.com/xperia-z4/general/guide-safe-bootloader-unlock-restore-t3386915

Related

[Q] Can I get my guarantee back after i unlocked bootloader?

My X8 was rooted and unlocked bootloader. I know that I will lost my guarantee.
But I have problem with my LCD touchscreen. It's the hardware problem, not software. So, I think I can get my guarantee.
how SEC identify the rooted and unlocked phone?? Can I get my guarantee back??
Re-lock bootloader, flash stock firmware and send your phone to Sony
eagleeyetom said:
Re-lock bootloader, flash stock firmware and send your phone to Sony
Click to expand...
Click to collapse
I read that re-locking a bootloader with a custom kernel installed would brick your phone, is that not correct? I belive the correct way would to be to reflash your phone to stock using SEUS and then lock the bootloader?
I'm not saying that eagleeyetom is wrong, I'm fairly new to this type of thing but I do remember the unlockbootloader guide stating not to relock bootloader with a custom Kernel installed as you'd brick the phone. Just trying to help
thanks for help.
my touchscreen is broken. I wanna change it to the new one.
I should relock my phone, right??
Are they check the software?? I think i've got the hardware problem..
Yeah, you're right. You should first flash stock kernel and then re-lock.
thanks.. i'll try it..

Xperia Z Bootloader unlock issues help

Howsit Guys
Need a lil help here. Im currently on firmware- 10.4.1.B.0.101 with [Root & XZDR] http://forum.xda-developers.com/showthread.php?t=2643898 <-- via this method.. all Works sweetly.. Problem is that i want to unlock my bootloader. Ive checked in the service menu, unlocked bootloader is allowed.
I am currently trying to unlock bootloader with latest version of Flashtools(unofficial way).whilst phone is on, i connect cable, startup flashtools, it detects device. Then i click on lightningbolt icon, to unlock bootloader. menu comes up asking to remove cable, power off phone n goto flashmode.
When i get to the part where it asks to select my device, i click on xperia z. And i get a FAIL message saying i cannot officially unlock bootloader?? Do i need to be on stock .244 firmware or stock kernal to unlock ? Or am i going through it the wrong way. main reason i want unlock bootloader to install cyanagen mod11 nightly.
Thnx
Done
Sorry for the silly post.. managed to unlock my bootloader..

Z1 bootloader doesn't unlock agaİn

HI, I UNLOCKED MY SONY Z1 BOOTLOADER WITHOUT BACKUP TA PARTITION AND THEN I RELOCKED IT, NOW I WANT TO UNLOCK BOOTLOADER AGAIN BUT I CAN'T UNLOCK IT,COMMAND SAYS-ERROR THIS DEVICE IS ALREADY UNLOCKED,
BOOTLOADER UNLOCK ALLOWED :YES
I TAKE UNLOCK CODE OEM UNLOCK 0x my code in flashtool,everything is correct but l can't unlock bootloader :crying:
I USED ADB COMMAND AND FLASHTOOL, BUT I CAN'T UNLOCK BOOTLOADER
PLEASE HELP ME I UNLOCK BOOTLOADER AGAIN
baku_boy_97 said:
HI, I UNLOCKED MY SONY Z1 BOOTLOADER WITHOUT BACKUP TA PARTITION AND THEN I RELOCKED IT, NOW I WANT TO UNLOCK BOOTLOADER AGAIN BUT I CAN'T UNLOCK IT,COMMAND SAYS-ERROR THIS DEVICE IS ALREADY UNLOCKED,
BOOTLOADER UNLOCK ALLOWED :YES
I TAKE UNLOCK CODE OEM UNLOCK 0x my code in flashtool,everything is correct but l can't unlock bootloader :crying:
I USED ADB COMMAND AND FLASHTOOL, BUT I CAN'T UNLOCK BOOTLOADER
PLEASE HELP ME I UNLOCK BOOTLOADER AGAIN
Click to expand...
Click to collapse
Long time ago i saw a thread that a user was telling that he wasn't able to unlock the bootloader when he has using certain ftf files. It is pretty strange actually.
Try to downgrade your phone, maybe installing kk and try again mate.
Maybe this will help if you already don't know it. Take a look here. Way old that thread but maybe still guilty.
http://forum.xda-developers.com/showthread.php?t=2440597
Post #2 says you have to be on stock kernel to relock your bootloader.
motorazrv3 said:
Maybe this will help if you already don't know it. Take a look here. Way old that thread but maybe still guilty.
http://forum.xda-developers.com/showthread.php?t=2440597
Post #2 says you have to be on stock kernel to relock your bootloader.
Click to expand...
Click to collapse
Very thaaaaaaaaaaaaaaaaaaaaaaaaaaanks you
Problem sloved After installing fresh kernel
Thanks, thanks, thanks
baku_boy_97 said:
Very thaaaaaaaaaaaaaaaaaaaaaaaaaaanks you
Problem sloved After installing fresh kernel
Thanks, thanks, thanks
Click to expand...
Click to collapse
Congratulations. Glad I could help. You can give me a thank if you don't mind.
What do you mean with fresh kernel? You mean stock kernel, aren't you?

fastboot oem lock, but still getting unlocked bootloader message

Through some miracle, I just unbricked my phone. I locked it and bricked it but then I flashed the stock 6.0.1 rom and i'm good!. I'm now at a status 2 because i unlocked and relocked it. I know you guys hate that because why relock it, but i'm returning it and wanted to play it safe.
Weird thing is I'm still getting the unlocked bootloader warning on power on. Any ideas why and how I can get rid of it? I thought for sure relocking would fix it.
droidfun1 said:
Through some miracle, I just unbricked my phone. I locked it and bricked it but then I flashed the stock 6.0.1 rom and i'm good!. I'm now at a status 2 because i unlocked and relocked it. I know you guys hate that because why relock it, but i'm returning it and wanted to play it safe.
Weird thing is I'm still getting the unlocked bootloader warning on power on. Any ideas why and how I can get rid of it? I thought for sure relocking would fix it.
Click to expand...
Click to collapse
This might not work with a locked bootloader, but you can give it a shot.
Download the boot logo from this thread that looks like the original one: https://forum.xda-developers.com/mo...o-maxx-droid-turbo-x-style-logos-bin-t3407046
Double click on the .exe file while your phone is in bootloader mode and plugged into your computer.
Thanks ya, I have seen that logo fix floating around for the Droid Turbo but I didn't want to try until I had at least one confirmation that it could work on a relocked bootloader. Anyone have a guess/idea/or success story?

re-locking bootloader xa2 ultra dual - please help

hi everyone
i have my bootloader unlocked and i need to lock it back
I have tryed to flash and wipe my device through xperiflash and flash tool, but it's still locked
flash tool says bootloader can't be re-locked when i click on BLU button..
is there any option to lock it back please?
hello, please help, can i somehow relock bootloader back please?
well, tryed flashtool and it says that my device can't be re-locked.. hmm ??
I can post exact screenshot today when i get home..
any advice please ?
actually, it seems that flashtool cant see TA partition.... my BL is unlocked from official sony page... how can i fix this please?
so, can I somehow lock bootloader please ?
maybe its possible for someone to provide stock locked bootloader ftf wich i could flash to my device perhaps please?
You cannot relock your bootloader. Your stuck with an unlocked bootloader for ever now
well , that's the answer I was afraid to hear....
i gues what's here now it's here..
thank you for answer and help

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