@BATHIC
1) I think if a radar quided missile would have come from left or right side, it would have aimed more towards the center of the plane and not flying before it's nose.
2) BUK missile does not throw shrapnel backwards, only sideways + missile speed giving forwards movement to the shrapnel. So, the damage on the LEFT side of the plane's nose is not possible if the missile comes from the right side.
So IMO, it's 100% sure that the missile came from ahead.