I found this at TreoCentral.com. Thought it was interesting...
If your Goodlink device stops working (that is, you cannot send/receive email or you get an error message when trying to access a Good application), here are instructions for reprovisioning your device. This will basically reinstall all the Goodlink software on your device.
1. Go to the GoodLink Home Screen.
2. Type the word 'debug' (no quotes). You will not be able to see the characters as your are typing, however, after typing the word, a command line prompt will appear.
3. At the command prompt, type 'reprov' (no quotes) and hit the enter key. You will see a line that says "This will erase ALL data and reprovision the device - are you sure you want to do this?"
This will NOT erase the entire handlheld. Only GoodLink will be re-installed.
3. Type a capital 'Y' (no quotes). The device will reprovision and soft-reset. After it has completed, you will want to run the fetch command to repopulate your subfolders.
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Running the Fetch command to re-populate your subfolders
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After you have intitially provisioned or after re-provisioning your GoodLink enabled device, you will need to populate your sub-folders using the fetccommand. This will give you step-by-step instructions on how to do this.
1. Go to the GoodLink Home Screen.
2. Type the word 'debug' (no quotes). You will not be able to see the characters as your are typing, however, after typing the word, a command line prompt will appear.
3. At the prompt, type: "fetch 1000 inbox:*' (no quotes) and hit the enter key.
This will pull 1000 messages from all the sub-folders located under your Inbox on Exchange and place pointers to them on the device. If you have more than 1000 messages in a folder you need to pull, simply follow the steps again to get the rest.
Notes: Only folders under the inbox can be sync'd with GoodLink. GoodLink does not support .pst files.