Have installed Marlin.RC_Titan_MBL_hex Now home is 0,0 rather than 175,100 but there is no "print from sd" in menu options..and when it tries to auto home the infrared sensor is over too far to the left to read glass height so head crashes and i have to turn it off at mains switch !! Panicky
Sounds like you have the single/pro firmware and have a dual? I flashed the dual firmware from Alex and it auto homes over the bed and works fine, maybe a reflash will help?
The firmware you flashed is for the Dual Titan setup, not for the Hybrid design. And please stay away from the "Alex9779" branches, those are all without SD support and for my machine setup only which is not described anywhere...