There are many custom ROMs out there that will take your handset to KitKat 4.4.2 and some are stable. Of course they don’t offer the TouchWiz interface or any of the custom features of Samsung, but then there are many apps that are able to replace these.
In some cases there are many benefits to having a custom ROM over the stock Rom. They come packed with features that you just cannot get with the stock ROM of Android and which TouchWiz doesn’t have.
If you are intent on updating your phone to KitKat 4.4.2 then a custom ROM for the S3 i9300 is the way to go.
Of course to install a custom ROM your handset does have to be rooted. This does void any warranty that you have, but then there are some tools out there that can recover the warranty. There are many guides out there to help you.
Once Google have released KitKat 4.4.3 then you can expect developers to offer their version of the ROM too, which means that you don’t have to worry about keeping your Samsung Galaxy S3 up to date, if Samsung have left it behind.
Before rushing into installing a custom ROM you should do your homework and follow guides very carefully. Guides will be able to tell you how stable a custom ROM is and whether or not you can recover the warranty of your handset. Reading the guides and following them can help to make sure that you don’t “brick” your handset.
