Update Maverick to Sierra?

[mixbyjm]

Hi all,
I have maverick desktop and want to update to Sierra, but it can't be done from Apple Store, it says the OS cannot be installed on this machine.
So is there any way to do update without fresh install?
Thanks

 

[P1LGRIM]

I have maverick desktop and want to update to Sierra, but it can't be done from Apple Store, it says the OS cannot be installed on this machine.

Change your SMBIOS to that of a Mac that meets the requirements for Sierra, like iMac14,2.