I'm on mk2 with mf9 boatloader for all examples above. There is something missing in 4.3 allowing the device to properly connect to enterprise Wi-Fi (my situation is peap with mschampv2). I see it authenticates me on the network just falls to properly connect then it resets.
I've tried the various apps in the playstore as suggested by others. This is not something the fabled wifi fix floating around can help.