is he asking for the same information the dev team posted about a few months ago? http://blog.iphone-dev.org/post/133799347/your-3gs-temporary-solution
i missed saurik's window to put that info on his server, but i still have the information the dev team talked about before 3.1 was released.
fwiw, i didn't upgrade my 3GS to 3.1 or even 3.0.1. still on 3.0
In a way, yes. The iBSS and iBEC files that the Dev Team asked for are only part of what Saurik is storing on his server. Those two files alone aren't enough to force iTunes to restore to Jailbroken 3.0/3.0.1/3.1. That's where the ECID SHSH files that Cydia asks your permission to store comes in. Check here for more info:
http://www.saurik.com/id/12