We have G3si, G3csi, S8100 and S8700 for most of our systems and I have two hardware versions (i.e. 3 and 11) of the TN2302AP card. We are running firmware release 71 with hardware version 3 and firmware 72 with version 11. We have not had any problems with these versions that I'm aware of. I understand that there are newer versions, maybe 75, that can be downloaded now.