I changed my config number to get generic US FW because my phone was running indian FW. Basically if you root, you can modify some text in a configuration file and trick the phone into thinking it's a model that it really isn't. More info here:http://forum.xda-developers.com/xper...ria-z-t2271530
Root is also super easy - Google towel root, it is a recently discovered exploit that allows for one click rooting more or less.
Xperia ZL - battery crapped out on me
White Xperia SL Rooted with leaked Jelly Bean build. - Retired
Nexus 7 running JB - Retired
LG optimus s - retired
iPhone 4s - retired
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