Steinbergusers.com: MI4 update & Intel Mac 10.4.11

I have been using the MI4 w/ my Macbook 10.4.11 (Processor 2.16 GHz Intel Core 2 Duo / Memory 2GB 667 MHz DDR2 SDRAM) as a MIDI interface for Reason 4.0 w/ no problems. I recently decided to do some vocal recording on location and have not been able to set up the MI4 as the audio interface w/ the Cubase SL3 (updated to version 3.3.1 Build 944). I have used Cubase (SX3 w/ the Yamaha 02r) elsewhere frequently, however, the w/ my home set-up the MI4 does not show as an option under my Device Set-Up. It does show up as a midi interface option. It also shows up as an audio interface under my mac audio/midi setup. I have tried to update the MI4 several times to the 1.3.00 Intel update from the Steinberg website (and I have verified that my current Firmware is set to 1.0.6) but every time it says it successfully installs and the computer restarts, the MI4 software version remains at 1.1.0.15. I have made sure that the interface is not plugged into the usb port when I am installing the update. I have ran through all the scenarios in my head and cannot figure it out.

Please help me understand if
A. My setup is not compatible
B. I have missed some necessary steps
C. My device is just malfunctioning

Thanks so much, I've spent like 6 hours trying to figure this all out!!!!!

-Eliezer

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