The GenII should work fine, we have the official protocol for those. (Its the GenIII that we had to reverse engineer). However, I'm pretty sure you need the latest FlashScan firmware to connect to the FJO devices.
If you have the latest firmware (V2.06.16) and hook it up and it still does not work check for these things:
1. Make sure the orange LED (second LED from the left) flashes periodically when the FJO is connected. That indicates serial data is being received by FlashScan. It flashes once about about 3-4 seconds.
2. If the LED is flashing but you still get "Controller not found", please select the option: Scan Tool->Scan Options->Save Trace File. Then copy the saved trace file from FlashScan to your PC using EFILive_Explorer (part of the EFILive V8 software) and email the trace file to me at paul@efilive.com
Regards
Paul