ok but the question the guy had was updating his sysnand to 7.0 - 9.2. If you honestly have to ask how to do something so risky your better off using the safest option.
(also how does your browser version have anything to do with updating your sysnand off a legit cart?)
Oh, I'm sorry. I thought you were directing it at both of us. My bad.
The browser version is unaffected by cart updates.