Ayuda con Tomtom go 750

Tengo el problema de que al ampliar o reducir el mapa, no consigo hacerlo.
Los datos son:
[TomTomGo]
DeviceName=TomTom GO
DeviceVersionHW=GO 750
DeviceSerialNumber=W7
DeviceUniqueID=
RamDiskVersion=20140305
BootLoaderVersion=55279
LinuxVersion=842337
ApplicationVersionVersionNumber=9702
ApplicationVersion=1512362.1
UserLanguage=Español
UserName=
LastConnectionTime=Never
GPSFirmwareVersion=2.16.201 77382
BuiltInColorScheme0=Belgica
BuiltInColorScheme1=Brittanica
BuiltInColorScheme2=America
BuiltInColorScheme3=Germanica
BuiltInColorScheme4=Australia
BuiltInColorScheme5=Deuteranopia
BuiltInColorScheme6=Greys
BuiltInColorScheme7=Antarctica
BuiltInColorScheme8=Africa
BuiltInColorScheme9=Astra
BuiltInColorScheme10=Asia
BuiltInColorScheme11=Brasilia
BuiltInColorScheme12=Concordia
BuiltInColorScheme13=NewAnglia
CurrentColorSchemeBuiltIn=11
CurrentVoiceInfo=Carmen
CurrentMap=Europe_TRUCK_1005_8777
CurrentMapVersion=1005.8777
CurrentHomeLocation=
Traffic=N
CurrentFuelpricesType=
CurrentFuelpricesTypeString=
CurrentFuelpricesLastFullUpdate=
ValueRatio=Bg45Orla3LG7C4ETdQ==
Features=PlusOrRDSTMCTraffic,PlusSafetyCamerasDynamic,PlusSafetyCamerasStatic,PlusFuelPrices,HDTraffic,PlusTripReporting,OnDevicePayments,HidRemote,HomeBackup,TTS,TTSCompressed,TTSLoquendo700,PhotoViewer,PhotoJPGViewer,PhotoBMPViewer,VoiceBrowser,LinkVolumeToNoise,MapShare,Newyork,Itinerary,Caymann,Durham,Leeway,VehicleProfile,MapShareVehicleProfile,VehicleProfileRouting,VehicleDeadEndWarning,VehicleRestrictionWarning,Handsfree,PhoneFeatures,CarSymbol,TextureRendering,ExtraSounds,UserSkin,RichPOI,FrequentDestinations,PermanentMapCfg,RDSTMC,Bluetooth,SDSlot,Microphone,SMSSupported,WorkPromotion,WorkStartUpPromotion,ShowTruckRestriction,SettingsOverride,SDK,USBAccessories,MultipleMaps,Traffic,MapOverlays,Documents,WarningSounds,DangerZonesCameras
UnsupportedFeatures=PlusDownloadDynamic,PlusDownloadGeneral,PlusDownloadMap,PlusDownloadPOI,PlusDownloadScheme,PlusDownloadUpgrade,PlusDownloadVoice,PlusDownloadRingTone,PlusMessageNotification,PlusForceMessageNotification,PlusPushChannel,PlusTraffic,PlusWeather,PlusEphemeris,PlusBuddies,PlusRoadConditions,PlusFuelPriceTimestamp,Hercules,HerculesTraffic,Oxford,TrackMe,GPRSEngine,VoiceRecording,ASR,ASRCnC,TTSUncompressed,TTSNuance51,MP3,IPOD,MusicPlayer,Games,LinkVolumeToSpeed,ZeroVolumeSupported,CaymannAlwaysOn,MAC,DepartureAdvisor,RouteInfoBackToSummary,3DCarModels,InternalModem,Prague,HardDisk,InternalFlash,ExternalModem,Keyboard,SupportKeyControl,SupportGetAMap,Work,WorkEnabled,WorkTuria,WorkMurcia,WorkBremen,WorkUsePlus,LiveServices,SimpleMapBrowserButtonBar,HTTPActivation,AltDefaultCarSymbol,ArrivalSounds
SupportedPatchTypes=7F
NrSupportedErrorTypes=138
UserPatchDatVersion=102
CompressedPatchVersion=200
MapServerPatchDatVersion=105
DeletedPoiDatVersion=200
ServerLineIndexDatVersion=102
ServerNameIndexDatVersion=102
MapShareSupportedProviders=243
CharacterSet=TTU
VehicleBrand=
VehicleModel=
VehicleOptions=

Tampoco se como calibrar la pantalla del mismo
Espero noticias