KSDS update

hi every one , i don’t know if anyone asked this question here before or not but it’s my first day here , i have a used 2016 forte 5 that i love , and i got the letter in the mail yesterday , searched for it online and i red some people saying don’t go update your software , but the letter stated that they will extend the engine warranty and i want to go , just wanna make sure that iam doing the right thing , thanks and sorry as english isn’t my first language