Quote Originally Posted by max_clif View Post
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- All the maps I have are from this forum ...
The reason for testing individually is that the maps could have been corrupted during downloads and/or transfers.

Quote Originally Posted by max_clif View Post
... I formatted to Fat32 using Win7 ...
The OS formatter is designed and intended for use with 'spinning disc' medium. The tool mentioned previously is specifically designed for use with SD cards.

Quote Originally Posted by max_clif View Post
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- I just notice that I have City Navigator SE Asia that features Hong Kong and Macau but not Guangdong. There is no official City Navigator for Hong Kong/macau/Guangdong together. Would overlapping maps (of I suppose different versions) cause freezeups?
Absolutely, as the GPS get confused and it doesn't know what to do when there are different and/or conflicting map info. Thus, possible lockups and/or other anomalies.