I tried to install the v1.6 with no luck. Previously i'm using the v.15, which last night 'magically disappeared.
The problem is the same whether the v1.5 is still in my bold or not, at 3/4 way of downloading it, a message come up, it says "The downloaded module is incompatible with data already stored on the device. Upgrade anyway? (some applications may not function)" .... so i pressed no.... this happens a couple of times even when the v1.5 is gone. Then I tried 'yes' then 907 Invalid COD appeared......
Could you help me out ?
Run the application loader and see if the 1.5 shows up in the list of installed apps and is checked. If it is, uncheck it and continue. That might properly uninstall it. If that is the case, you should be able to download 1.6 and install fine afterward.