Android™ OS v4.0.3 Ice Cream Sandwich for Samsung Galaxy S2

Cara-cara untuk upgrade ke ICS

Download Kies2.0, run and installed in laptop / PC

Connect S2 via USB cable

Bila device dah connected, dekat firmware information akan display available firmware, click untuk download, tunggu sampai complete installation. 

View di S2 > Setting > About phone

Selamat mencuba J