[Q] Installing custom ROMs on my sony xperia s

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http://forum.xda-developers.com – Hello everyone :D I have a Sony xperia S updated to the latest build of ICS with a 1 year warranty ( still there's about 7-8 months in it ) im eager to install custom roms on it , but problem is that i loose warranty if i unlock my bootloader :( and im a moderate/heavy user on the phone . So my question is , should i go for it and unlock the bootloader ? because im still stuck with ICS while cyangenmod has Jelly bean for my phone .. or should i keep the warranty and wait because something might happen to it ? ( still no word from sony on the update to its 7 months old phone ... ) (HowTos)