Because that was not your first time making mistake.

And please put some punctuations throughout your posts, not just a few question marks at the end in order to make them easier to understand.

Basically...Meph can drop anything up to Armor/Weapon 78.

Namely, he cannot drop:
M'avina's Embrace, Veil of Steel, Ondal's Almighty, Heaven's Taeback, Trang-Oul's Guise, Trang-Oul's Girth, Tal Rasha's Guardianship, M'avina's True Sight, Aldur's Deception, Griswold's Honor, Griswold's Honor, Immortal King's Soul Cage.

Messerschmidt's Reaver, Schaefer's Hammer, Grandfather, Sazabi's Cobalt Redeemer, Windforce, Natalya's Mark, Stormspire, Bul Kathos Tribal Guardian, Bul Kathos Sacred Charge, Griswold's Redemption, Cranium Basher.