Ok I give up. I have worked on this for 5 days. Read all the tutorials and followed instructions. I just can't make it work.
I have a TomTom One 3rd edition 1gb
I downloaded Dowunder's 9485 Navcore installer. Installed without problems.
If I look at ttgo.bif
DeviceName=TomTom ONE
DeviceVersionHW=ONE (v6)
DeviceSerialNumber=
DeviceUniqueID=
RamDiskVersion=20120927
BootLoaderVersion=55001
LinuxVersion=842337
ApplicationVersionVersionNumber=9485
ApplicationVersion=1074274.98
UserLanguage=English US
UserName=
LastConnectionTime=2014/11/18,22:58:26,UTC
LastConnectionPhone=
GPSFirmwareVersion=185.5001.041
I then downloaded this map from Navitotal.
United_States_935_5745 OR ...