The orginal fimware is cloned from www.culfw.de (thanks for the work to R.K.)
This alternative firmware has additional send receive methods and code cleanups.
The compiled firmware can be found at MediaFire
Source
- https://blog.loetzimmer.de/2017/10/max-cube-umbau-zu-4-fach-netzwerk-cul.html
- https://archive.is/rLkD1
nix-shell
cd culfw/Devices/CUBe
make CUBE_BL
make -C bootloader bootloader_CUBE.bin
Clear ROM on the Cube by connecting Jumper J1 and power on. This purges the original firmware. The device should now register a USB COM interface.
bossac -ewvb bootloader_CUBE.bin
Reconnect the device while pressing the reset button on the bottom to load the bootloader. LED should flash quickly.
cp CUBE_BL.bin /var/run/media/patrik/0042-0042/
LED should flash more slowly after reboot. Device gets IP over DHCP and is ready for homegear.