| | Re: BB9900 Changes On Its Own
The .dat files are created by the BlackBerry, I believe. I'm not sure exactly what they do. I suspect they store sort of "shortcut" info for the media apps. I became familiar with them when people would have trouble with the audio player (back even before a BlackBerry had a video player) not show tracks, not playing tracks all the way through, skipping tracks, weird problems. The cause is corrupted .dat files. The solution is to detelete the .dat files. It doesn't hurt anything. The BlackBerry will recreate them as needed.
When searching on your issue I saw someone recommed delete the .dat files. It made some sense in that maybe your BlackBerry is forgetting what pic is used as wallpaper because of a corrupt .dat file. I don't know, of course, if this is in fact possible, but it does seem plausible and it is worth a try.
My other idea was that your media card is starting to flake out. But that doesn't seem to be the case.
The .dat files are hidden. You can use the computer to search for them on the media card and device storage memory, and delete them.
If you happen to have media encryption enabled the .dat files will be .dat.rem files.
Other than that, I'm stumped if this isn't the problem.
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