Accidently reset unlocked ip4 now it won't work

Okay, so I was getting my iphone 4 ready to sell, and I was looking through the erase data options and without thinking hit "erase all data and settings"

You know what happened. Now my phone is stuck in an endless apple logo cycle.

I was on os 4.0.1 with a 1.59.00 baseband.

I originally did my jailbreak using jailbreak.me
I unlocked with ultrasnow.

I'm unsure whether or not I saved my SHSH blobs. How can I find out if I did or not, and what happens if they aren't saved?

So if I didn't, what is the best way for me to restore or upgrade without losing my baseband?

Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A405 Safari/7534.48.3)

I didn't think about the fact that it would delete the jailbreak/unlock hacks as well

Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A405 Safari/7534.48.3)

Clearly I've recognized my error, no need to keep pointing that out. I just wanted to make sure that I can keep the thing unlocked.