Maybe stormtrooper armor will work in EP2

[TK143]

I mean, did their armor ever protect them from a blaster bolt in any of the classic trilogies?

[Jonce]

Yea, good idea. Maybe the blaster technology improved alot because of the Empire and they couldn't find armour strong enough to deflect it.

[Darth23]

I've always heard that the stormtrooper armor only partially deflects shots, it's not completely impervious to blaster fire.

[Jedi Master Kyle]

or stones, or light breezes, or the ewoks' tiny fists of fury... :)