WebUSB DFU for NumWorks

Vendor ID (hex): Product ID (hex):

Plug in your NumWorks calculator, then click here:

Your device has multiple DFU interfaces. Select one from the list below:

Runtime mode

Transfer Size:

DfuSe Start Address: DfuSe Upload Size:

DFU mode

Flash firmware onto device

External memory, if available, should be flashed first.

Flash Address:

Dump flash from device

WebUSB is currently only supported by Chromium / Google Chrome.

For Chrome to communicate with a USB device, it must have permission to access the device and the operating system must be able to load a generic driver that libusb can talk to.

On Windows, that means that an appropriate WinUSB/libusb driver must first be installed. This can be done manually with programs such as Zadig.
On Linux, that means that the current user must have permission to access the device.
On macOS and ChromeBooks, it should work directly.