Ok. So I been trying to look online for the best way to upgrade my IP4 from 4.1 to 4.3.3 the lastest FW, while preserving my BB 01.59.00. What is the difference between going the route of TinyUmbrella vs that of Snowbreeze (im a windows user). This is basically where i got confused so I decided to come here. I would like your guys advise on this and maybe a link to a good guide for which ever you recommend. THanks in advance guys.