Talent to update it carelessly (8)
I believe the answer is:
aptitude
'talent' is the definition.
(I have seen 'Natural talent ' mean 'aptitude' so perhaps 'talent' could also mean 'aptitude')
'update it carelessly' is the wordplay.
'carelessly' indicates an anagram.
'update'+'it'='updateit'
'updateit' anagrammed gives 'APTITUDE'.
'to' is the link.
(Other definitions for aptitude that I've seen before include "Natural gift" , "Inherent ability, natural talent" , "capacity" , "Bent" , "Natural ability or skill" .)