iPhone 4 5.0.1 can't jailbreak. help please.

[xpix]

When I got my iPhone 4 I couldn't do anything because the sim card wasn't supported. I couldn't check the firmware version because it wasn't activated, but I downloaded tinyumbrella and found out it was 4.3.4. So I hacktivated/jailbroke it with redsn0w and it was working fine but then I shut it off and tried to turn it back on and it was stuck in recovery mode. The only way I could fix it was by updating it with iTunes (to 5.0.1). I have the shsh blobs for 4.3.4 but I can't downgrade because I keep getting an error (2005). I can't hacktivate/jailbreak it (after I try I still can't do anything because the sim card is not supported)
I need to activate it, jailbreak it and unlock it. Can anyone please help?

[freyertuck]

I have had the exact same problem. I thought my 4.11.09 baseband might have something to do with it since I preserved it. I can't get sn0wbreeze to work and I can downgrade but with that I have no service! Stinks

Ment to say," I CAN get sn0wbreeze to jailbreak..."