Release notes
http://docs.blackberry.com/en/admin/...1-5.0.1-US.pdf
Download here
https://www.blackberry.com/Downloads/browseSoftware.do
Known issues:
When you install this maintenance release on BlackBerry® Enterprise Server 5.0 SP1 on a computer that runs Windows® 2003,
one of the following errors occurs:
• Internal Error 2755. 1612, c:\Windows\Installer\f97bb.msi
• The installation source for this product is not available. Verify that the source exists and that you can access it.
(DT 481005)
Workaround: Visit support.microsoft.com to read article 925336.
When you install this maintenance release on BlackBerry Enterprise Server 5.0 SP1 with a local Microsoft® SQL Server® 2005
Express Edition SP3 database server, the setup application identifies the SQL Server process as being in use. (DT 483874)
Workaround: Stop the Windows Services for Microsoft SQL Server