I have the same units as yours (Audiosources AS-6587G and Erising ES962D). I think the time problem is generated by TomTom. I use several software for navigation - iGO8.3.4, iGO Amigo, Garmin XT, Sygic, NDrive, Mireo BlackEdition, controlled by SystemInformation. I had no problem synchronizing time with any of them (btw iGO, and probably other software, have the option to syncronize GPS Time whit Local Time). Well, no problems until I changed SystemInformation shell whit WolfNCU... But I solved the time synchronization problem with a small script (MortScript) :
Run("\StorageCard\TimeCor\szt.exe"," /t2 /en")
folder = SystemPath("ScriptPath")
Run( "\StorageCard\WolfNCU\WolfNCU.exe" )
download this archive extract and copy in the root of your Sd card. open TimeCor.mscr whit Notepad and edit the lines:
Run("\StorageCard\TimeCor\szt.exe"," /t2 /en") where t1=GMT+1, t2=GMT+2.....en - regional settings
Run( "\StorageCard\WolfNCU\WolfNCU.exe" ) change the path to the your navi app, e.g. "\StorageCard\iGO8.3.4\iGO8.exe"
In the navigation setings of your unit point the path to TimeCor.exe