Help experia arc s update problem

[navendra8]

hi i have experia arc s i have anroid 2.3 , and my phone says its have latest anroid, and i couldnt able to update it, whn ever i try to update to pc companion it shows that my phone's software is not alterd, plz help me out

 

[Sam-SonyXperia]

Unfortunately in this circumstance it appears you have the latest version specific to the network/region your handset was made for. For further information regarding the approval process please see here.

Ice Cream Sandwich