A few weeks ago we received a request to modify his I-Mon to have two 7.1.4 inputs.
I looked at this carefully, whilst not a major change it would involve a number of small changes to multiple units as follows
I-Mon hardware modification:- Plug in card with 4 summing channels to enable
I-Mon firmware modification - Reassign two stereo inputs to the Alt input and map stereo inputs 3-5 to 1-3
I-Mon Manual update - Describe input mapping for modified unit
MidiUPD software modification - Add Check Box to inform software that the ALT-7.1.4 modification is fitted.
TMC-1/2-IMon firmware modification - Update I-Mon page to indicate if modification fitted and limit input selections
All these changes will have to be tested!