I don't if you're still interested after 5 months but for forensics the util you would need is programmer.exe. With it, you can grab the entire contents of the flash and save it as a single uncompressed file. Rim's 2.1 SDK isn't open source so it can't be put just anywhere.
There is an 2.1 or so compatable SDK for the Pelles C compiler. If you where interested in development for it. You can use it but doesn't support the higher-level UI functions but anything can be made with it.
Both things are at a Yahoo Group:
BB386dev BB386dev : BB386dev
It hasn't been really used in over a year but the files are there.