Ayuda GPS Tomtom One

Buenas tengo un gps viejo y me gustaria actualizarlo pues por la via oficial no me deja y me invitan a comprar otro...
La verdad que ando un poco perdido, a ver si me podeis arrojar algo de luz
Estos son los datos que he sacado del ttgo:

[TomTomGo]
DeviceName=TomTom ONE
DeviceVersionHW=ONE (v8)
DeviceSerialNumber=PN14........
DeviceUniqueID=XXXXXXXXXX
RamDiskVersion=20090817
BootLoaderVersion=55136
LinuxVersion=343369
ApplicationVersionVersionNumber=8083
ApplicationVersion=9669
UserLanguage=Espa?ol
UserName=XXXXXXXXXX
LastConnectionTime=Never
GPSFirmwareVersion=
BuiltInColorScheme0=Belgica
BuiltInColorScheme1=Brittanica
BuiltInColorScheme2=America
BuiltInColorScheme3=Germanica
BuiltInColorScheme4=Australia
BuiltInColorScheme5=Deuteranopia
BuiltInColorScheme6=Greys
BuiltInColorScheme7=Antarctica
BuiltInColorScheme8=Africa
BuiltInColorScheme9=Astra
CurrentColorSchemeBuiltIn=0
CurrentVoiceInfo=Marta
CurrentMap=Southern_Europe
CurrentMapVersion=835.2420
CurrentHomeLocation=XXXXXXXXXX
Traffic=N
CurrentFuelpricesType=
CurrentFuelpricesTypeString=
CurrentFuelpricesLastFullUpdate=
ValueRatio=Axm8omdcyvboRhwPzQ==
Features=PlusDownloadDynamic,PlusDownloadGeneral,PlusDownloadMap,PlusDownloadPOI,PlusDownloadScheme,PlusDownloadUpgrade,PlusDownloadVoice,PlusDownloadRingTone,PlusMessageNotification,PlusPushChannel,PlusTraffic,PlusWeather,PlusEphemeris,PlusBuddies,PlusMobileSafetyCameras,PlusRoadConditions,PlusFixedSafetyCameras,PlusFuelPrices,HDTraffic,PlusOnlineCamera,PlusTripReporting,HomeBackup,Newyork,Newyork1Dot6,Caymann,Durham,CarSymbol,RDSTMC,Prague,SDSlot,InternalFlash
SupportedPatchTypes=1F
NrSupportedErrorTypes=132
UserPatchDatVersion=102
CompressedPatchVersion=150
MapServerPatchDatVersion=104
DeletedPoiDatVersion=200
ServerLineIndexDatVersion=102
ServerNameIndexDatVersion=102
MapShareSupportedProviders=203
CharacterSet=Latin-1