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How to Unlock and Re-lock bootloader of ST15i


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#1 OFFLINE   iamsuperuser

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Posted 07 January 2012 - 05:51 PM

I want to know how to safely unlock & relock the bootloader of my Xperia mini St15i. On XDA there is good info for Xperia Arc but nothing specific for Xperia Mini. The SE's official page for unlocking bootloader only explains unlocking. Since i want to know both unlocking & re-locking the bootloader i want to know the methods that devs suggest.  I'm familiar with all the pros and cons of the playing with bootloader. I'm just looking for reliable method. Please direct me. Thanks in Advance. :)
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#2 OFFLINE   jock

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Posted 07 January 2012 - 06:24 PM

Using Sony Ericssons fastboot is the best i suppose?

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#3 OFFLINE   iamsuperuser

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Posted 07 January 2012 - 08:29 PM

Ok. I unlocked the bootloader. Now i'm trying to flash CM7.2.0 FXP054 with THIS tutorial. Can someone explain step 2 and the waring message, Please :)
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#4 OFFLINE   SmirgeliS

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Posted 07 January 2012 - 09:41 PM

View Postiamsuperuser, on 07 January 2012 - 08:29 PM, said:

Ok. I unlocked the bootloader. Now i'm trying to flash CM7.2.0 FXP054 with THIS tutorial. Can someone explain step 2 and the waring message, Please :)
Step 2: You need custom kernel, cos CM7 won't work with stock (default) Kernel
And warning message, this one? : FXP054 - REQURES SEMC 4.0.2.A.0.42 ROM
You need to download SEMC firmware 4.0.2.A.42 cos FXP054 also won't work with higher fw like .58 or .61 or .62 :)

Edited by SmirgeliS, 07 January 2012 - 09:42 PM.


#5 OFFLINE   iamsuperuser

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Posted 09 January 2012 - 09:29 PM

Ok. Now my XMini is CM7.2.0 but there is no market app in this. :( I've installed manually market update 3.1.5 and vending.apk but when i enter market it asks for new account , i click Yes, the app exits to homescreen. Pls help me get a suitable market app   :mellow:

EDIT: Ok. I followed The Arc Method to relock bootloader of my XMini at my own risk and it worked. I suggest this method for relock BUT some users have reported boot loop issues on XDA, so be careful. I initially flashed stock ROM using wotanserver before unlocking. I used seus to update, then unlocked bootloader again, installed Rage V2 Kernel form XDA. All this in just an hour, but have to follow procedures and use firmware specific files(Otherwise phone becomes a demo piece :p ). :) Wow it was a great experience for me. Thought it would be useful for future users. Topic Closed.
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