Here's the deal for people on BES that have DST issues after updating:
Problem (Users on BES)
The BlackBerry device did not display the correct time for Daylight Saving Time (DST). At 2 AM on 11 March 2007, the BlackBerry device clock remained at 2 AM instead of changing to 3 AM.
Cause
The time zone database on the BlackBerry device does not have the updated DST information. A BlackBerry device running BlackBerry Device Software 4.2 or higher does not have the 2007 DST patch installed and is activated on a BlackBerry Enterprise Server running software versions prior to 4.0 Service Pack 6 or 4.1 Service Pack 3. If the BlackBerry Device Software is upgraded to a version that already contains the new DST information (that is, BlackBerry Device Software 4.2 Service Pack 1 or higher), or if another BlackBerry device that has been updated with the new DST information is activated for the same BlackBerry device user, this problem may occur. The previous DST information was backed up from the unpatched BlackBerry device. When the time zone information is restored, it overwrites the new DST information in the BlackBerry Device Software time zone database with the previous DST information.
Note: This can be confirmed by trying to manually set the clock to 2:01 AM on 11 March 2007. If the correct DST tables are present, this should not be possible.
Workaround
Complete the following steps:
1. Remove the BlackBerry device user from the BlackBerry Enterprise Server. Note: When prompted to remove all existing BlackBerry data, select Yes.
2. Connect the BlackBerry device to the BlackBerry Desktop Manager.
3. On the BlackBerry device, go to Options > Advanced Options > Service Books.
4. Delete all Desktop [<service_book_ID>] or BlackBerry [<service_book_ID>] service books.
5. In BlackBerry Desktop Manager, click Backup and Restore, then follow the on-screen prompts to back up the BlackBerry device data.
6. Click Backup and Restore again.
7. Select Advanced, then delete the Time Zone Patch entry.
8. Perform a security wipe of the BlackBerry device.
9. Click Backup and Restore again and restore the backup file created in step 5.
10. Add BlackBerry device user to the BlackBerry Enterprise Server.
This is a previously reported issue that has been escalated internally to our development team. No resolution time frame is currently available. Updates to resolve DST 2007 problems will be posted as soon as they are available on the
BlackBerry web site.
Additional Information
The time zone database cannot be cleared using BlackBerry Desktop Manager. A security wipe is required. For more information on the impact of DST changes in 2007 on BlackBerry solutions, go to
BlackBerry.