Share your experience!
Android 2.3.4 4.0.1.A.0.283
http://forum.xda-developers.com/showthread.php?t=1279774
Special Thanx to Jozinek
Android 2.3.4 4.0.2.A.0.42
http://forum.xda-developers.com/showthread.php?t=1312475
and Xperiablog
More pix HERE
Solved! Go to Solution.
download FlashTool
http://forum.xda-developers.com/showthread.php?t=920746
or
http://androxyde.github.com/Flashtool/
Install it and you will see 5 folders
Custom
Drivers
Firmwares
Loaders
X10Flasher_lib
take the firmware to the "Firmwares" folder
click on Falsh
Press Ok
it will ask you to connect your phone on Flashmode (turn off your phone, press the back button, then connect the USB) press OK
This is an step by step guide
Get the ftf files here
http://forum.xda-developers.com/showthread.php?t=1279774
get the Flashtool From here
http://forum.xda-developers.com/showthread.php?t=920746
Install it and you will see 5 folders
This is an step by step guide
5.a. Unplug your USB cable from the PCb. Power off your phone and plug the USB into the phone
c. Press back button and keep your finger on button
d. Plug USB cable into your PC whilst holding down the back button on your phone
e. A green LED will appear
f. The process will automatically detect your phone and start flashingg. When "Found at USB/........" appear on flash tool you may release"back button", sit down, relaxand wait.Hope this is helpful to you6. IF the "Start Flashing" message appear everything`s ok if not...repeat. Sitdown and relax (again )
7. When last message appear unplug/plug USB cable
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Regards,
Ricardo Rendeiro
Make sure you backup everything
Backup & Restore app
Use this links to download the apk
http://forum.xda-developers.com/showthread.php?t=1193802
or
http://www.elita-clan.com/downloads/backup_and_restore_v010935.apkhttp://www.elita-clan.com/downloads/backup_and_restore_v010935.apkor
http://www.mediafire.com/?1n07llajeaoo03y
How to install it
You need to
go to settings -> applications -> check unknown sources
download IO File Manager
https://market.android.com/details?id=org.openintents.filemanager&feature=search_result
download the backup & restore app, transfer it to your SD card, use OI file manager to find it -> tap on it -> install it
Contacts
just to play it safe sync your contacts w/ google if you haven't already
SMS/MMS
if you don't want to use the backup & restore app then
Install "backup SMS" to back up your SMS and MMS to your Gmail
https://market.android.com/details?id=com.zegoggles.smssync&feature=search_result
or your SMS use
"backup & restore SMS"
https://market.android.com/details?id=com.riteshsahu.SMSBackupRestore&feature=search_result
or for your MMS use "Save MMS"
https://market.android.com/details?id=com.schwimmer.android.mmsextract&feature=search_result
Call Logs
And for call logs this is great
https://market.android.com/details?id=com.yang.android.ansta
where can i download the 2.3.4 ... is this available in sone ericsson site..??
you have to use Update Service or PC Companion or on your phone
settings -> about phone -> Software update
if it's available on your country and/or network you should be able to install it
if not, you can read the steps above to manually update your phone
I have a problem. Flashtool is reporting that im missing drivers!
I know that I installed all drivers, and PC companion,What do I do now?
Where can I find drivers to reinstall?
05/008/2011 13:08:19 - INFO - <- This level is successfully initialized05/008/2011 13:08:26 - INFO - Preparing files for flashing05/008/2011 13:08:26 - ERROR - Cannot identify your device. Found ST15 while expecting X10, E10, U20 or E15 (read from ro.product.model from build.prop)05/008/2011 13:08:26 - INFO - Selecting from user input05/008/2011 13:08:56 - INFO - Searching Xperia....05/008/2011 13:08:57 - ERROR - Unplug and replug your device to detect it05/008/2011 13:08:57 - ERROR - Please plug you device in flash mode05/008/2011 13:08:58 - INFO - Searching Xperia....05/008/2011 13:08:58 - ERROR - Please plug you device in flash mode05/008/2011 13:08:59 - INFO - Searching Xperia....05/008/2011 13:08:59 - ERROR - Please plug you device in flash mode05/009/2011 13:09:00 - INFO - Searching Xperia....05/009/2011 13:09:01 - ERROR - Please plug you device in flash mode05/009/2011 13:09:02 - INFO - Searching Xperia....05/009/2011 13:09:02 - ERROR - Please plug you device in flash mode05/009/2011 13:09:03 - INFO - Searching Xperia....05/009/2011 13:09:03 - ERROR - Please plug you device in flash mode05/009/2011 13:09:04 - INFO - Searching Xperia....05/009/2011 13:09:04 - ERROR - Please plug you device in flash mode05/009/2011 13:09:05 - INFO - Searching Xperia....05/009/2011 13:09:05 - ERROR - Please plug you device in flash mode05/009/2011 13:09:06 - INFO - Searching Xperia....05/009/2011 13:09:06 - ERROR - Please plug you device in flash mode05/009/2011 13:09:07 - INFO - Searching Xperia....05/009/2011 13:09:07 - ERROR - Please plug you device in flash mode05/009/2011 13:09:08 - INFO - Searching Xperia....05/009/2011 13:09:08 - ERROR - Please plug you device in flash mode05/009/2011 13:09:09 - INFO - Searching Xperia....05/009/2011 13:09:09 - ERROR - Please plug you device in flash mode05/009/2011 13:09:10 - INFO - Searching Xperia....05/009/2011 13:09:10 - ERROR - Please plug you device in flash mode05/009/2011 13:09:11 - INFO - Searching Xperia....05/009/2011 13:09:11 - ERROR - Please plug you device in flash mode05/009/2011 13:09:12 - INFO - Searching Xperia....05/009/2011 13:09:12 - ERROR - Please plug you device in flash mode05/009/2011 13:09:13 - INFO - Searching Xperia....05/009/2011 13:09:13 - ERROR - Please plug you device in flash mode05/009/2011 13:09:14 - INFO - Searching Xperia....05/009/2011 13:09:15 - ERROR - Please plug you device in flash mode05/009/2011 13:09:16 - INFO - Searching Xperia....05/009/2011 13:09:16 - ERROR - Please plug you device in flash mode05/009/2011 13:09:17 - INFO - Searching Xperia....05/009/2011 13:09:17 - ERROR - Please plug you device in flash mode05/009/2011 13:09:18 - INFO - Searching Xperia....05/009/2011 13:09:18 - ERROR - Please plug you device in flash mode05/009/2011 13:09:19 - INFO - Searching Xperia....05/009/2011 13:09:19 - ERROR - Please plug you device in flash mode05/009/2011 13:09:20 - INFO - Searching Xperia....05/009/2011 13:09:20 - ERROR - Please plug you device in flash mode05/009/2011 13:09:21 - INFO - Searching Xperia....05/009/2011 13:09:21 - ERROR - Please plug you device in flash mode05/009/2011 13:09:22 - INFO - Searching Xperia....05/009/2011 13:09:22 - ERROR - Please plug you device in flash mode05/009/2011 13:09:23 - INFO - Searching Xperia....05/009/2011 13:09:23 - ERROR - Please plug you device in flash mode05/009/2011 13:09:24 - INFO - Searching Xperia....05/009/2011 13:09:24 - ERROR - Please plug you device in flash mode05/009/2011 13:09:25 - INFO - Searching Xperia....05/009/2011 13:09:25 - ERROR - Please plug you device in flash mode05/009/2011 13:09:26 - INFO - Searching Xperia....05/009/2011 13:09:26 - ERROR - Please plug you device in flash mode05/009/2011 13:09:27 - INFO - Searching Xperia....05/009/2011 13:09:27 - ERROR - Please plug you device in flash mode05/009/2011 13:09:28 - INFO - Searching Xperia....05/009/2011 13:09:28 - ERROR - Please plug you device in flash mode05/009/2011 13:09:29 - INFO - Searching Xperia....05/009/2011 13:09:30 - ERROR - Please plug you device in flash mode05/009/2011 13:09:31 - INFO - Searching Xperia....05/009/2011 13:09:31 - ERROR - Please plug you device in flash mode05/009/2011 13:09:32 - INFO - Searching Xperia....05/009/2011 13:09:32 - ERROR - Please plug you device in flash mode05/009/2011 13:09:33 - INFO - Searching Xperia....05/009/2011 13:09:33 - ERROR - Please install or reinstall device drivers from drivers folder05/009/2011 13:09:34 - INFO - Searching Xperia....05/009/2011 13:09:34 - ERROR - Please install or reinstall device drivers from drivers folder05/009/2011 13:09:35 - INFO - Searching Xperia....05/009/2011 13:09:35 - ERROR - Please install or reinstall device drivers from drivers folder05/009/2011 13:09:36 - INFO - Searching Xperia....05/009/2011 13:09:36 - ERROR - Please install or reinstall device drivers from drivers folder05/009/2011 13:09:37 - INFO - Searching Xperia....05/009/2011 13:09:37 - ERROR - Please install or reinstall device drivers from drivers folder05/009/2011 13:09:38 - INFO - Searching Xperia....05/009/2011 13:09:38 - ERROR - Please install or reinstall device drivers from drivers folder05/009/2011 13:09:39 - INFO - Searching Xperia....05/009/2011 13:09:39 - ERROR - Please install or reinstall device drivers from drivers folder05/009/2011 13:09:40 - INFO - Searching Xperia....05/009/2011 13:09:40 - ERROR - Please install or reinstall device drivers from drivers folder05/009/2011 13:09:41 - INFO - Searching Xperia....05/009/2011 13:09:41 - ERROR - Please install or reinstall device drivers from drivers folder05/009/2011 13:09:42 - INFO - Searching Xperia....05/009/2011 13:09:42 - ERROR - Please install or reinstall device drivers from drivers folder05/009/2011 13:09:43 - INFO - Searching Xperia....05/009/2011 13:09:43 - ERROR - Please install or reinstall device drivers from drivers folder05/009/2011 13:09:44 - INFO - Searching Xperia....05/009/2011 13:09:44 - ERROR - Please install or reinstall device drivers from drivers folder05/009/2011 13:09:45 - INFO - Searching Xperia....05/009/2011 13:09:45 - ERROR - Please install or reinstall device drivers from drivers folder
http://dl-www.sonyericsson.com/cws/download/1/110/61/1309763183/Update_Service_Setup-2.11.7.13.exe
you have to download this software also..this will install the other drivers 
Tnx man!:smileywink:
ok and keep us updated..and do tell what you think of the new update 