About selfbooting Perpetual Blue

[Megalexxx]

I think I might have found something :
_ 1st_read.bin from Perpetual Blue uses CRI SFD Ver.1.14 and fails to load Title.sfd
_ 1st_read.bin from DP3 uses CRI SFD Ver.1.43 and loads Title.bsfd with no problem

Maybe R18 compressed these sfd files using a too recent compressor, and the original 1st_read.bin can't read them any more.

If that's the case, I've got 2 solutions :
1) rebuild 1st_read.bin with a newer SFD player => impossible without the source code
2) recompress SFD files using an older compressor => I don't know which one I could use...

Any suggestion ?