Faculty performing IT update (8)
I believe the answer is:
aptitude
'faculty' is the definition.
(I've seen this before)
'performing it update' is the wordplay.
'performing' indicates anagramming the letters.
'it'+'update'='itupdate'
'itupdate' anagrammed gives 'APTITUDE'.
(Other definitions for aptitude that I've seen before include "Update it, having natural skill" , "Inherent ability, natural talent" , "faculty" , "Update it, having a relevant talent" , "A natural talent or skill, for which there may be a test" .)