nolen velasco jr wrote: > I am having an issue calibrating and usage using the colormunki > > Running from a Alienware m11x > Windows 7 64-bit > i1d3_decode_extEE: checksum failed > init_inst returned 'Hardware Failure' (External EEPRrom checksum doesn't > match) Hi, it appears that X-Rite have slightly changed the usage of the EEProm on the i1d3 with the A-02 revision of the device. Assuming you are running Win 64 bit, you can try installing the files here <http://www.argyllcms.com/insttools_win64.zip> and see if that fixes the problem. Graeme Gill.