Legendary Noosphere now can be upgraded to +15
From 0 to 5 you need 250 Gear Level Jewel Bundle for each grade
From 6 to 10 you need 250 Gear Level Jewel Bundle and 250 Weapon Level Jewel Bundle  for each grade
From 11 to 15 you need 250 Gear Level Jewel Bundle, 250 Weapon Level Jewel Bundle and 250 Wings Level Jewel Bundle  for each grade
In next update each level from Noosphere will give you +3% Resist Stun Rate