It looks like the game uses the LZO-Professional v2.0 to compress the data.-Borderlands 2 Compression Tool v1
--Decompresses LZO Encryption
--Compresses LZO Encryption
--Fixes SHA1 Checksum
--Decompressed data might still be compressed.
--That compression (if any) is not known by me.
--Do not move runtime created files from their created path.
--Removing them will cause the program not to save.
--Make sure you create a backup of your save.
--Program Creator: kill_seth @
--ISOLib Creator: PureIso & Jappi88 @
--LZO Creator: Markus @