Obsolete AX 1500

I was going through my old parts box and found an AX 1500 controller, It appears to be working in single channel mode with firmware V1.9d.
Could I change it to dual channel with a firmware change? Is there a place where I can find firmware for your obsolete products? The old Roboteq firmware links don't work anymore.
Thanks for your help.
Rick Brooks

I will have to check when I get back to Arizona next week, however you may also need to update some of the other chips on the unit to convert it rather than just the firmware. This has changed in our currently supported line of controllers.

It might take a bit - I am currently out of the office this week.

Have you made any progress finding the AX 1500 firmware?

I can't find it. I'll let you know if I do.