The Modtronix Network Bootloader is an utility for updating the firmware and web pages on a Modtronix Ethernet enabled board. No PIC programmer is required. Currently only the SBC65EC and SBC68EC boards programmed with the Modtronix Bootloader are supported.

The program consists out of two tabs. The "Firmware Update" tab is used for updating firmware on a target board via the network. The "Web Page Update" tab is used for compiling standard HTML web pages into a "File System Image", and uploading them to the board via FTP. See the Ethernet board's source code documentation for further details on modifying the web pages.