Hey Solo, I feel all your pain bro. I just bought an arcade unit today that has a mfg. date of 2009-04-17. Mine also has a Dash Value of 2.0.7363.0 and Kernel Value of 2.0.1888.0. After setting up the unit, creating an avatar, setting the initial settings, I checked the "Memory" section, it said I had 322mb left of writable space.
So, I'm thinking I have a 512mb Jasper, right? I'm not really sure since I'm an ultra noob to the NAND side of things, I was mostly into the drive firmware side of things. Anyways, I believe it's the power connectors on the power supply cable that tell you which version of the console you have, right?
I imagine my console is nearly identical to yours, in terms of mobo versions, etc. My question is, are our consoles Jtag-able? I'd kill to get homebrew running on this thing man, that's all I want for Christmas. lol