Why can't I change the date on my MacBook?
My macbook is 2015 model and i can’t change the date of year and the name saka what will i do?
[Re-Titled by Moderator]
If this Mac was purchased used and was not previously reset before your use, it’ll need to be factory reset to transfer app ownership and settings to you.
What to do before you sell, give away, trade in, or recycle your Mac - Apple Support