What to do when it can't find baseband blobs

I was trying to re-restore my jailbroken ipad2 with iOS 5.1.1. and everything was ok untill the end it stated it can't find the fresh baseband blobs, because it might not be signing anymore. So redsn0w 0.9.15b3 stated that I don't need to lose my re-restore and then it had no instructions anymore. Then it asked for my restore ipsw of 4.3.5 and it started to work again but ... at the end it still didn't get to find the baseband for 4.3.5. In the end, i've just restored it with itunes and went to the newest iOS 7.0.3. I just posted this questions, so I can learn from my mistake for the next time. Hope you can help me out. thank you in advance. Thank you for the jb.. I've enjoyed it :) Hope there will be a jailbreak soon for iOS 7.