How can I craft a winged helm into a spired helm?

I tried 2 recipes so far but neither of them worked. Is it even possible?

Upgrades on the base item are available only for set items and unique items via cube.

LE:
1

Ral Rune + 1

Sol Rune + 1

Perfect Emerald + Normal Unique Weapon = Exceptional Version of Weapon
1

Tal Rune + 1

Shael Rune + 1

Perfect Diamond + Normal Unique Armor = Exceptional Version of Armor
1

Lum Rune + 1

Pul Rune + 1

Perfect Emerald + Exceptional Unique Weapon = Elite Version of Weapon
1

Ko Rune + 1

Lem Rune + 1

Perfect Diamond + Exceptional Unique Armor = Elite Version of Armor

So the answer is: you cannot do it on normal items.

SnowSnow beat me to it. To expand: you cannot upgrade the base type of a base White, grey, magic, or crafted item.

also rares
recipes/recipe-elite-rare-armor-t3302.html