unlock bootloader,mission impossible - Sony Ericsson Xperia Mini, Mini Pro, Xperia Pro, A

after some time playing with my Ray i decided to unlock bootloader to gain the performance and battery life with custom ROM and kernels.Tried unofficial method with S1tool (testpoint) with no success.Searched around and it looks like that new Sony's has new security for bootloader.............waiting for solution,here is the screenshot of the error
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Try official Sony unlock ?

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Did you try test point ? It's look like you haven"t unlocked your phone but it is

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-Jesco- said:
Try official Sony unlock ?
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Click to collapse
Won't work if the phone is bought from a carrier (at least in North America).
I have the same problem with a MK16a Xperia Pro, production date 12W21. Testpoint doesn't work.
If your phone is produced after 12W14 it probably has the new security chipset that blocks the testpoint method.
I have done too much research on this - it is currently impossible to unlock these new Xperias using these setool programs, while the Sony S1 signature server is offline.
The worst part is, I decided to just SIM unlock the phone the traditional way (buying a code) and the code doesn't work (tried 2 providers, gave me the exact same code), so I can't even sell this junk I believe the new security chipsets are even blocking traditional unlock codes.

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It is simfree phone so i dont have to unlock for all network,not interested in official unlock bootloader cause i dont wanna loose ability to update official way(fota brick),anyway thanks for the answers and hope that somebody will hack the "new security" soon.....stock ICS is laggy and choppy and i reverted to GB,frozen the bloatware and the phone is much better compared to how it was out of the box but i would like to test the custom kernels and ROM..........

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I'm having the exact same problem. Would you check out my thread?
http://forum.xda-developers.com/showthread.php?t=1889274
I wrote it before I found out there was the production date issue. You're from Canada so you're probably dealing with a Pro from Fido I'm guessing? Which is exactly mine. MK16a 12W21

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I can sort of see why people are worried about losing the ability to officially update. But typically a developer uploads official builds within a day or two of the release. In fact because different regions and carriers release at different times you often get an update sooner via the forum. Similarly Sony are rolling out a tool for unlocked boot loaders to allow official builds to be installed. I think you have to try really hard to damage your phones hardware the official unlock method carries few risks if you're reasonably careful.
Sent from my Xperia Ray using xda premium

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komsa said:
after some time playing with my Ray i decided to unlock bootloader to gain the performance and battery life with custom ROM and kernels.Tried unofficial method with S1tool (testpoint) with no success.Searched around and it looks like that new Sony's has new security for bootloader.............waiting for solution,here is the screenshot of the error
Click to expand...
Click to collapse
tried with wotanserver?
for me it worked this server

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try with flashtool. its working for newest xray.

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I was thinking the cause was lost too, then I found www.wotanserver.com yesterday afternoon, paid a small fee (€7.99) and now my 2011 Xperia Ray is Network/Bootloader unlocked and functioning perfectly. Hope this helps?

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I tried wotan server but wasn't work with my device

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seamo123 said:
I was thinking the cause was lost too, then I found www.wotanserver.com yesterday afternoon, paid a small fee (€7.99) and now my 2011 Xperia Ray is Network/Bootloader unlocked and functioning perfectly. Hope this helps?
Click to expand...
Click to collapse
it's a 2011 model - before Sony introduced new security to defeat testpoints. So it's not helpful for those whose handsets were produced after February 2012.