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UNLOCK bootloader and change firmware on sony-ericsson xperia acro IS11S

Android Q&A - xda-developers - forum.xda-developers.com
Hi all!!!

I have se xperia acro is11s device by AU KDDI.

I unlock it from operator by x10unlock tool.

My operator (NTC Russia) work on it, but i have no any GPRS functions an cannot send SMS, because AU is CDMA operator. I must flash firmware for it become LT15 or SO-02c (NTT Docomo).

When i flash LT15i_4.0.1.A.0.283_Generic Global.ftf, after flash complete power on phone hang logo SE.

When i select firmware SO-02c after flash complete power on phone hang logo NTT DOCOMO .

I unpacked the original firmware and replace system.sin from LT15i. then made bundle creation in FlashTool, then i flash phone.

Then the phone is turned on with a blank screen:

Operates keyboard, you can make screenshot and post it to twitter. Working volume buttons. GSM network is unavailable. Desktop and settings are not available. No any icons(

Official unlock is not able for this model(

When i try unlock bootloader by s1tool i'll see this:

Code:

31.12.2011 22:38:09

31.12.2011 22:38:09 DETACH USB CABLE FROM PHONE

31.12.2011 22:38:09 REMOVE BATTERY FROM PHONE

31.12.2011 22:38:09 ATTACH TESTPOINT

31.12.2011 22:38:09 PRESS "READY", THEN ATTACH USB CABLE TO PHONE

31.12.2011 22:38:09

31.12.2011 22:38:43 PROCESSING ...

31.12.2011 22:38:44 REMOVE TESTPOINT NOW, THEN PRESS "READY"

31.12.2011 22:38:44

31.12.2011 22:38:50 START NAK: 03000A

31.12.2011 22:38:50 Elapsed:41 secs.

I know that is possible to unlock and flash, i saw a video of the working phone on japanise site.

Can anyone help me?

Sorry for my bad English.

p.s.: original firmware :

Code:

Model number: iS11S

Android version: 2.3.4

Baseband version: 8x55A-AABBQDAZM-203028B-17

Kernel version : 2.6.32.9-perf SEMCuser@SEMCHost#1

BUILD NUMBER: 4.0.1.b.0.112
Date: Feb 21, 2013   


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