Microsoft has released the service pack 6 for Dynamics Ax 3.0. Click the link below for the downloads
Service Pack 6 for Dynamics Ax 3.0[Requires customer source Logon]
What Makes Microsoft Dynamics AX 3.0 SP6 Important?
Quality and Performance: The service pack will introduce corrections made to solve many
previously reported issues.
The fix lists contain detailed descriptions of improvements
Microsoft Dynamics AX 3.0 Service Pack 3, 4 or 5 installed. Because the kernel portion of the installation is Microsoft Dynamics Ax 3.0 Kernel Rollup 3, with the base platform of SP3 or later, this affects the installation of SP6.
Before you install Microsoft Dynamics AX 3.0 Service Pack 6 it is necessary to read the enclosed readme file in the download package. If you do not follow the correct installation procedure described in the readme file the product may not work properly.