I need some advice or step-by-step on what's needed to upgrade the firmware on my phone without losing data. I'd prefer not to install 3rd party software to accomplish this, but I do have Kies Air, which may or may not work for me. (See my other thread regarding that).
My phone stats are as follows:
Android Version: 2.3.3
Baseband Version: I9100MUGKG2
Kernel Version: 18.104.22.168-I9100MUGKG2-CL371789
Build Number: GINGERBREAD.UGKG2
Thanks in advance for any help that is offered.