hello. i've done a quick research but there are so many softwares and risk that and i'm simply confused.. i have an iPhone 4 with 01.59.00 baseband on iOS 4.2 i want to upgrade to iOs 5.0.1 with preserving my baseband. i'm looking for a decent route since i'm relying an unlock. i have SHSH blobs from 4.0.1 to 6 i'm asking, which softwares should i use for achiving this and how should i use them? thanks in advance.