was released on April 19, 2009 for 1.5 Fallout 3 patch Xbox 360 and on April 28, 2009 for PC. It updates Fallout 3 to version 184.108.40.206 for Xbox 360 and version 220.127.116.11 for PC.
The Xbox 360 patch is available via
Xbox Live and the PC update can be acquired via Games for Windows Live or the official website.
Fixed issue with
V.A.T.S. calculations not appearing properly for perks (PC) Fixed crash related to altered references between master files
LOD objects render properly when loaded from DLC worldspaces
Fixed issue with companion non-player characters not loading into cells immediately after player
Fixed the issue with the door in
Vault 87 where Colonel Autumn came through. Apparently fixed glitch where
Fawkes and Charon could be in your party at the same time. This could have been fixed in 1.4. (Xbox 360, two cases) Fixed a cosmetic bug that caused all the add-ons to vanish from the "Downloads" menu (Xbox 360).
New bugs introduced, check discussion page
How to use mod with patch
Simple as this: Download
FO3Edit and rename the FO3Edit.exe file to FO3MasterUpdate.exe and run it.
Playing with mods that place new objects in the game may cause the game to crash. (This is fixed by converting the .esp files into a .esm through an application like Fallout Mod Manager)
Saving the game with mods enabled may cause the game to crash. (This too is fixed through the manner stated above)
It breaks Ignore Normal Resistance flags on weapons like the Deathclaw Gauntlet.