Question SM-G920A Android 5 not flashing in Odin

[enoki]

I have a Combination firmware currently flashed onto my S6 (SM-G920A) that is running on Android 5.0.2, but when I try to flash an Android 5.0.2 stock rom onto it it always says "FAIL". I can't figure out why. Is there a reason for this? Help is appreciated.

 

[helpstar]

Are you sure it´s the correct Android for your Samsung?