The one uploaded by elser1 is the original Eboot.bin, the one uploaded by lindwurm is the modified Eboot.bin which was found on the Driver BD-ROM Disc for the JB2 device.
You can try using the modified Eboot.bin uploaded by lindwurm and see if it works on 3.55 CFW but I highly doubt it will.
how to they actually "burn" the blu ray.. my blu ray burner will not read a ps3 game disc? i don't think many br writers can.. just out of interest do they rip using mm or something then ftp over to pc then write to disc or is it just a game down load burnt to disc?