(adsbygoogle = window.adsbygoogle || []).push({}); i can get a a 3.55 real cheap is it easy to convert to ps3ita 4.21 dex and go online ..or is it not woth the hassle

first you need to get it onto DEX, read the tut here You must login or register to view this content.
that puts you on rebug DEX, then you need to install ps3ita.
when changing to DEX there are a couple of steps that can cause console brick if not done correctly just take your time