Stuck in the connect to iTunes screen :(

[HottSushiz]

I have a iPhone 3GS baseband 6.15 on 4.1. I did the unlock and it seemed to work fine. After 5 days it lost the signal and said "No Service" then continually rebooting if in "No Service" for a period of time. So i though i should try my method by restoring it to a custom firmware i made. So i put it into DFU Mode and restored it. But a message popped up saying "Apple with verify this restore" i don't recall that message ever popping up when i restored it before, i thought i was just forgetful and i hit OK.

It seemed like it restored properly. But when i looked at my iPhone it had that "Connect to iTunes" picture/screen. I thought maybe i could turn it off, put it into DFU mode and rejailbreak it. But if i turn it off it just turns back on again.

I'm not too certain what to do now. I was thinking of updating to 4.3.3, i my SHSH Blobs on my computer so doesn't that mean i can just downgrade back to 4.1.

Any help would be appreciated, thanks.

EDIT: Never mind, i fixed it by using iReb.

[sladester]

congrats. Updating to the latest firmware always works, and as long as you keep those shsh blobs you can downgrade to the earliest firmware you have blobs for.

[HottSushiz]

Hey thanks for the response. My signal is still constantly going up and down like for x amount of hours it would be fine, I'd receive txts. But then the signal dies, i get no service and it's just a pain.

Do you think upgrading to the latest firmware would solve the problem?

Also can you please explain SHSH blobs to me. I've read articles but i still don't quite get it . If i saved the SHSH blobs on my computer and when i upgrade to 4.3.3 If i wanted to upgrade would i have to insert it or something? If you can just inject the SHSH blobs wouldn't it be possible to buy an iPhone with a old baseband and inject it to an iPhone with a recent baseband?