I have a 3GS (new bootrom) that I jailbroke a month ago using Limera1n on iOS 4.1. In a moment of stupidity last night, I upgraded to 4.2.1 which un-jailbroke it.
I then used redsn0w to unlock it again on 4.2.1, but now all of the apps I purchased in Cydia through Limra1n 4.1 are not there anymore. Is there a way I can get those apps back?
You can just download them again from Cydia for free. Cydia will know that your already paid for them by device id and/or login account. And, hope you realize you know have a tethered JB.