OBERHEIM SYNTH

Hi,

I've just acquired an Xpander that has some issues (like having a voice processor that needs replacing).

I'm in the process of figuring out if I need to upgrade the firmware.  Through the menu: I get Main version 1.2, Voice version 2.0, and cassette 4.4 displayed.

My research indicates the highest version for main was 1.2 and voice is 1.4.

Is the 2.0 I'm seeing for voice a typo in the code? The only two labelled EPROMs on the voice board have "CAS 1.4 0" and "CAS 1.4 1" on them so I want to know if maybe earlier firmware a "2.0" typo or if the aforementioned EPROMs are actually the 1.4 voice firmware.

Thanks.