Version 4.06 fixes some system exclusive bugs and adds a few features.

You can download it here

Unzip the file, and put the two .bin files on the root level of a USB drive. Boot the DSS-1 into test mode holding the DATA A up/down buttons until you are asked to upgrade the OS. You may have to disconnect the USB device in the other port in order for the upgrade to be recognized.

Change list is included in the .zip file

Huge thanks to Jim Babb for continuing to support and enhance the DSS-1 after almost 35 years. For those of you who don’t know, Jim is the creator and programmer of the upgrade from 1987 along with Paul Kreter.

The DSS-1 upgrade kits are sold out, as well as the DI-10 digital option boards for the ASR-10.

I’m going to do another run of both, but it will be 6-8 weeks, as everything is taking longer these days due to COVID.

I’ll announce when they are back in stock.