Norton 360 renewal

My Norton 360 license is due to expire in about one month time.
Once a year I format the hard disk and install everything again to clean all the "trash" (for example pre-installed programs that I did not used during the previous year are removed!).

Normally I let the license to expire before formatting the disk.
My question is how can I install the upgrade version of Norton without the previous version of N360?

 

 

Thanks,

 

Alex.