Warning for BlackBerry Forensics
BlackBerry devices come with password protection. The owner has the capability to protect all data on the phone with a password. The user may also specify the amount of attempts for entering the password before wiping all data from the device.
If you exceed your password attempts limit (defaults to 10, but you can set it as low as 3), you will be prompted one last time to type the word BlackBerry. The device will then wipe. It will be reset to the factory out-of-the-box condition (default folder structure), and the password reset. You will lose everything in the device memory, with no possibility of recovery. It will not reformat the microSD card, since that's not part of the factory configuration. The phone will still be usable, and the operating system will be unchanged. So this technique cannot be used to roll back from an OS upgrade problem.
Obviously this is a serious problem if you need to perform forensics on the device. The best work around is to work with the owner of the device and hopefully get them to disclose the password.
Acquiring BlackBerry Backup File (.ipd)
1. Open Blackberry’s Desktop Manager
2. Click “Options” then “Connection Settings”
4. Select “USB-PIN: 2016CC12” for connection
5. Click “Detect”, then it should show a dialog box saying it found the device
6. Click "OK" to return to the main menu
7. Double click “Backup and Restore”
8. Click "Backup"
9. Save the .ipd file
Opening Blackberry Backup Files (.ipd)
1. Purchase Amber BlackBerry Converter from 
Download Trial Version
2. Use File | Open and point the program to the BlackBerry backup file (.ipd).
3. Navigate to the appropriate content by using the navigator icons on the left.
This is a step by step guide to downloading and using a Blackberry simulator. For this example I downloaded version 4.0.2 in order to simulate the 9230 series.
1. Select a simulator to download from the drop-down list on the Blackberry website. Click Next.
2. Look through the list and download BlackBerry Handheld Simulator v126.96.36.199.
3. Enter your proper user credentials and click Next to continue.
4. On the next page, reply accordingly to the eligibility prompt and click Next to continue.*
5. Agree or disagree to the SDK agreement and click Submit to continue.*
6. The next page will provide you with a link to download the .ZIP file containing the wanted simulator.
- - If you disagree at any of these point you will not be able to continue to the download.
INCOMPLETE, WILL COMPLETE BY 11.3.2008
Here is a useful link to the Blackberry Protocol as documented by Phil Schwan, Mike Shaver, and Ian Goldberg. The article goes into great description of packet sniffing and the protocol as it relates to data transfer across a USB port.