AutoCAD LT 2010 Update 2To identify which AutoCAD LT Update 2 needs to be installed on your system, in Windows Explorer, navigate to the installation folder of AutoCAD LT 2010 (for example, C:\Program Files\AutoCAD LT 2010). - On Windows XP: right-click on proddata.dll, select Properties and in the resulting dialog select the Version tab.
- On Windows Vista and Windows 7: right-click on proddata.dll, select Properties and in the resulting dialog select the Details tab.
Note: The file version number for proddata.dll is 18.0.309.0.0 if Update 2 (version 3) is already applied. If proddata.dll is version 18.0.55.0 or 18.0.215.0, use the following files: If proddata.dll is version 18.0.59.0 or 18.0.215.20, use the following files:
If proddata.dll is version 18.0.221.0, use the following file: You do not have to install Update 1 in order to install Update 2. Update 2 includes the most recent fixes, as well as all fixes included in Update 1.  Readme (select language version):
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