done a lot reading and took plunge to update this lost soul i done full backup.
this is the original info on device
DeviceName=TomTom ONE
DeviceVersionHW=ONE (v6)
DeviceSerialNumber=Y4********0
DeviceUniqueID=**********
RamDiskVersion=20080529
BootLoaderVersion=55001
LinuxVersion=190943
ApplicationVersionVersionNumber=8010
ApplicationVersion=9369
CurrentMap=United_Kingdom_and_Republic_of_Ireland
CurrentMapVersion=705.1485
delete all files i update the navicore using this file 9.510.2-2039.CAB-navcore-LE assuming is the correct one,now i have this info on device
ttgo.bif:
DeviceName=TomTom ONE
DeviceVersionHW=ONE (v6)
DeviceSerialNumber=Y4xxxxxxxxxx
BootLoaderVersion=55001
ApplicationVersionVersionNumber=9510
ApplicationVersion=1234792.2
CurrentMap=
CurrentMapVersion=0.0
Map(s): d:\United_Kingdom_and_Republic_of_Ireland_955_6803\
Storage:Size 485MB, Free ...