OK
Following my Post "Updating Boot file for a SDHC in a GO500" which I solved and the post has been 'closed'.
Although everything is working OK, apart from; When the Tomtom is turned off/shut downf and then it will not restart unless I remove and re-insert the SDHC card.
This also applies to my TT, which I thought it was just a card slot problem. But now it appears the same problem is on both Devices, both using two different makes of 4G SDHC.
Any clues
Thanks