i am assuming the structure of eboot and metainfo or data didnt change.
except the key to decrypt these.. since the chain of trust is changed, everything came from lvl0, so we seem cant solve the encryption from start, then that is why i suggesting solve the symmetric ase128 from some given bytes.
btw, npdrm doesn't go to every games. i think most retail disc eboot.bin doesn't have ! only those from psn is npdrm?!