the two ways to use your phone, if you want to use your phone with all functions & solutions aswell as full support then upgrade to 1.1.4 or if you are fancy for 2.0 or higher version features, so you can upgrade to 2.0.2 the highest available version yet, & unlock with winpwan latest.
2.0.2 version is checked & working. 100%.
just for your ref. attach two diff links,
/vbb/showthread.php?t=587100 for 2.0 or higher unlocking solution.
/vbb/showthread.php?t=593931 what I believe the best thing for as if now.
well, as I said, I tested by my self 2.0.2 on one phone, so its working, you can upgrade, but I believe 1.1.4 is the best for now. [ My phone is still on 1.1.4. ( Just for your info.) ]