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Relock bootloader

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By rufy93, Senior Member on 10th August 2013, 11:13 AM
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Does anybody know if there is a way to relock the bootloader on the ZR?

Have unlocked the bootloader but realized that I don't need it unlocked.
11th August 2013, 12:03 PM |#2  
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Quote:
Originally Posted by rufy93

Does anybody know if there is a way to relock the bootloader on the ZR?

Have unlocked the bootloader but realized that I don't need it unlocked.

AFAIK, you need to backup using Backup TA first before unlocking. Then you can restore everything using it again later.
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11th August 2013, 12:04 PM |#3  
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Unfortunately I was stupid enough to not do that, so right now I have a backup with an unlock bootloader.
13th August 2013, 05:03 PM |#4  
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Quote:
Originally Posted by rufy93

Unfortunately I was stupid enough to not do that, so right now I have a backup with an unlock bootloader.

Try this?

1. Download and install Flashtool
2. Connect phone in Flash-mode (phone shut down, volume down + power)
3. Press the BLU button
4. Press the relock option
5. Put a stock .ftf firmware in the Flashtool firmwares folder
6. Flash the firmware

Let me know if this works.

Sent from my C5503 using Tapatalk 2
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14th August 2013, 08:25 AM |#5  
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When ressing the blu button in flash mode flashtool just wanted to unlock.
When going into bootloader it relocked just fine!

Thanks!
14th August 2013, 09:49 AM |#6  
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When you unlocked your bootloader without first running Backup-TA you lost your DRM keys though, so Bravia Engine for example is gone for ever. There is no way to recover this and you cannot flash a backup from another phone as it will brick your device.

http://forum.xda-developers.com/show....php?t=2153261
22nd September 2013, 06:04 PM |#7  
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the problem is theres a file missing in flashtool folders for xperia zr:
loader.sin.

it exists in the xperia Z folder, you can try and copy it, but i'm afraid it might hard brick the device, i don't want to try it without knowing first...
22nd September 2013, 09:47 PM |#8  
Even if you recover your TA the DRM keys still are gone!! but still there is nothing absolute and drm can be restored without having them (there was a method on Xperia S and Xperia P which worked great!)
23rd September 2013, 08:57 AM |#9  
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I relocked my bootloader by flastool first it said that loader sin wasn't found in c550x folder so I took the loader sin from stock .244 kernel and it worked

Sent from my C5503 using xda premium
23rd September 2013, 02:30 PM |#10  
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Quote:
Originally Posted by nikhil18

I relocked my bootloader by flastool first it said that loader sin wasn't found in c550x folder so I took the loader sin from stock .244 kernel and it worked

Sent from my C5503 using xda premium

can you please explain more? how did you take it from there?
i took the file doomlord offered here:
http://forum.xda-developers.com/show...&postcount=523

he gave me a link, i copied the file from there and after is what flashtool output was...

didn't offed to relock my loader...
24th September 2013, 03:44 PM |#11  
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I opened the stock kernel as a zip file and took the loader.sin out and placed it in c550x folder and then it worked

Sent from my C5503 using xda premium
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