BSA file format
From Vault-Tec Labs
The Fallout 3 BSA files are the same as used in The Elder Scrolls IV: Oblivion. Preliminary work indicates that they are version 68 rather than version 67.
To open them with BSA Commander (Also see below) you have to do the following:
- Backup the original .bsa file
- Open the file in a hex editor
- Change byte 5 from 68 to 67
- Save
- Open in BSA Commander and extract the files
Another way is to use BSAUnpack, telling it to go on when it warns you about archive incompatibility
[edit] Fallout BSA Unpacker
A fallout specific unpacker has been released on www.fallout3nexus.com
- The packer requires Java and is multiplatform.
- Get the program here: FO3 Archive Utility
