I just got my Targus keyboard in the mail from Amazon. The batteries were already in place, so I figured they might have died. I bought new ones, but still no luck.
I have PSP PDA v 1.3.1 installed on Firmware 3.52 M33.
I've read most of the troubleshooting and help stuff, and Googled as many options as I could.
If someone has this same firmware, and has it working, let me know some tips!