I know the cluster I have is 1J5-920-846c, which is Immo3, full FIS running VWK501MH (software version is identified by: 01.00, 01.10, or 00.92 in the top right corner of the sticker on the cluster, or by checking the cluster bin file).
It should support graphics as it worked previously in a car with a CANBUS OEM Navi radio and displayed fine.
I would wire it to 3LB and have full functionality that way, however when I set the FIS-Control to 3LB and refresh the Gateway listing, my radio and some other CANBUS devices no longer work.
I love your product, but it is quite frustrating that I can't use it fully without crippling my car, or using CANBUS mode which is missing features and locks up if I click the wrong feature.
I've searched the forum, and I know I'm not the only one that would benefit from CANBUS mode working properly if you are able to look into it further at some point.