Share your experience!
Hi all,
please help me out ,
when i'm trying to update 4.0 its showing message as software error "failed"
should i need to select option "USB debugging " in Application setting -->Development-->USB debugging
or not ??
Solved! Go to Solution.
A big thanks uliwooly, from my bottom of heart for helping me out ... without your support i might not be able to upgrade to ICS ... 
now i'm able to upgrade to 4.0
I know, i'm awesome like that
Don't forget to mark the Correct Answers & Helpful Answers
hii luvkalra ... just download this SUS from this below url site
Update Service (SUS)
http://www.sonymobile.com/gb/tools/update-service/
no need to download other extra software which mentioned above USBFlash_driver.zip to install the driver for S1boot download... if u successfully installed SUS and connected USB to phone--->PC .
you will get automatically installation of flash drivers in your computer .then your mobile is detected in SUS companion and able to upgrade to ICS 4.0 ... this task is worked for me 
brother..i have installed sus
but as soon as i open it........
error msg appears and it never opens......:smileyplain:
n yaaa.....howz ics workin on ur phone.....
ny lags or problems yet...????????
hey man.....
i did it on oda computer,,,,,,n everything went just soo smoothly
d problem was my windows8 actually..........
THANX A TONN FOR UR HELP AND SUPPORT :smileyhappy:'
n yea ics is fab
yea man.....i updated it using anoder pc......thnx bro:smileyhappy:
Its working like charm....No Lags and No Issue 