you can try this
[Program] SimpleRoot .1 ---- 3 Click Root w/ nand unlock!! - xda-developers
this is simple root it should work with your version and give you full root
after you have full root use this and you have all the newest stuff
DOWNLOAD
MIRROR
[All-In-One Update, INCLUDES Updated Baseband & Wimax Radios + PRI 1.90_003, Uninstallable apps]
doing it this way should be less steps