Just did a regen today and the instructions are useless.
This is how it's done.
1. open your drives version of regen as the source in jungleflasher
2. edit the serial data to match your drive and save
3. open your version of regen in the target and click spoof
4. click save to file
5. flash the file you saved to your drive using dos32 2.0
6. load a 9504 firmware as the target and manually enter your key and then right click and use writekey
7. Slimkey your drive
8. There you have it, that slimkey dummy has all your proper info to make a working drive