Hi I have a TT Go5000 which has worked ok until last update of Europe maps - it says memory card too small. Its an 8Gb card, and holds the maps. If I remove the card and install a formatted 16Gb card the device won't load because there are no maps on the device memory to run the device. Tried all sorts of workarounds - to no avail. Someone has suggested purchasing a small map and loading it onto the device so that I can then put in the larger SD card - but reluctant to do that, spending £25 for a map I don't need doesn't make good sense! Currently running with a cut down Europe map, which seems ok - but it grieves me that I have a system that isn't working as it should because there doesn't seem to be an obvious way of upgrading to a larger memory card.