RPCS3 - PKG to ISO

Hi all

I have a PS3 with PS3HEN.

PS3 emulator RPCS3 allows you to install PKG PS3 games for use with the emulator. I installed Mortal Kombat 9 from package and it installed in:

..\RPCS3\dev_hdd0\Game\NPUB30668\

Under this folder there is sub dirs and files as follows:
TROPDIR
USRDIR
various game files including PARAM.SFO

I wanted to convert this NPUB30668 folder to ISO for use on a real ps3 with external NTFS drive, but cant make it work.

I tried to replicate the above structure...

RPCS3 - PKG to ISO