With some motherboards and with some samples of gsmbox/umtsbox it was possible to experience USB device connection problems. The result was that the SIMEMU device, actually the microprocessor inside gsmbox and umtsbox, was not connected, resulting in a not usable product.

The framework used in the development of the microprocessor code has been updated by the microprocessor manufacturer, we used the new version and all those problems are over.

You can download the new firmware from the firmware download page.