BI4.1 - SP3 to SP5 upgrade

Hi,

We are currently on BI 4.1 SP3 version and intend to move onto the BI4.1 SP5.

1. Do we need to install SP4 and SP5 patch or directly we can install SP5.

2. Apart from CMS database backup and Filestore backup what else needs to be done.

Thanks,

Rakesh