Just got an Att Iphone 4s JB with 5.0.1 and baseband 1.0.14. I saved my blobs via tiny umbrella in the event I need to downgrade, however I was reading you can't downgrade your baseband upon upgrading. Can anyone advise if it's preferable to stay on this firmware with this baseband or just upgrade? I had the verizon cdma iphone 4s and it was a nightmare to unlock even with the gevey sim. What would I potentially loose if I upgrade? I keep reading about loosing unlock, but I am currently using an att mvno prepaid service without any sim modification. Can you advise if my current settings/firmware is one of the most sought after on craigslist/ebay for unlocking purposes?