I'm having a similar problem. I upgraded to 955.9746, on a GO730 with 9.510 Navcore. TTHome doesn't show the map in 'Manage my Go'. I'm unable to get mapshare corrections or download POI's/content from TTHOME. Device works fine otherwise. ttgo file appears correct?
DeviceName=TomTom GO 730
DeviceVersionHW=GO 730
DeviceSerialNumber=xxx
DeviceUniqueID=xxx
RamDiskVersion=20130404
BootLoaderVersion=10012
LinuxVersion=1000
ApplicationVersionVersionNumber=9510
ApplicationVersion=1234792.1
UserLanguage=English US
UserName=
CurrentMap=USA_Canada_955_6746
CurrentMapVersion=955.6746
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