I bought my phone September 2010, and it has s5620xejb3 as its current firmware (at least that is what is says when I write *#1234#).
The thing is that there are certain programs that I am not allowed to install, due to the old version of Android. Some programs say that I need for example Android 2.1 OS to install the program (ex: WhatsApp Messenger). Can any update/firmware/patch help me with this problem?
If so, what should I look for and download?
Thank you all for your help!