Default Update touch firmware, is needed?

Guys, as most of you know, dialing 3845#*802# ( or any variant) you can update your touchscreen firmware, in order to make knock code works even if you were in 20b ( i think?) firmware

Now my question is: im on 20b without knock code and don't realy need it but.. if i update drivers, do I can have benefits or remain the same? maybe more sensitive screen or what.. im on stock 20b, only rooted

thanks
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