You can extract them with hex editor manually. The header format is simple.
[Header0]
00h-37h: Filename
38h-3Bh: Offset of LZ11 compressed data
3Ch-3Fh: Size of LZ11 compressed data
[Header1]
...
For example:
the 32-bit integer at 0x38 is 0x480
the 32-bit integer at 0x3C is 0x3C06
then you...