http://hackaday.com/2013/04/26/cube-3d-printer-hack-lets-you-use-bulk-filament/middle of the page, I have read it, maybe you can use. "" copy and paste ""
Jason says:
January 16, 2014 at 5:49 am
These are the hex files I’ve got for my gen1 cube: v0.24, v1.00, v1.06, v1.07 and v1.10.
https://drive.google.com/folderview?id=0By9lF8Q3EZlNeVdhZUZlV1kyS2M&usp=sharingv1.10 doesn’t allow the cartridge swap trick. v1.07 does allow you to change cartridges, but doesn’t reset the amount of filament left in the ‘empty’ cartridge as outlined by Kevin and others. v1.00 does reset the filament amount, but has a bug that stops the ‘firmware update’ button working. If you use this one, you’ll have to do a factory reset to start the cube in firmware loader mode. (Hold the round function button on the front of the Cube and plug the machine back in while continuing to hold the button. Note: this will remove all your saved settings!)