I tend to just reply to the latest one.

When I ordered the programmer on the 27th they said "Jan 8th" and seem to be doing their best to accomplish that. Seem the label has been created but not actually shipped..

Once received I will know a lot more right now can just confirm 315 MHz.. Sometime between 2007 and 2011 Chrysler switched to 455ish MHz but the shape of the fob changed also.

That be as it may I think many would just like an emergency key that did not have the remote capability. That is pretty simple just does require a locksmith that can cut the square keys (is more a milling operation than a traditional cut).

So we really have four elements here:
Skreem
Key
RFID chip
Remote Keyless Entry (RKE)

Should each have a separate thread ? (well, maybe not the key)...

The other issue is one of a failed SKREEM module and is more complex but known. Unfortunately it is probably not difficult but Those Who Know are charging $300 to reprogram a good used SKREEM so information on how is closely held. Reverse engineering will require more equipment and knowledge than I have at the moment, it is no longer my job, but cannot be very complicated. Know I have a Tek storage scope and an HP Logic Analyzer here somewhere but have not used in a decade.