SEP 12.1 RU1 MP1 upgrade to SEP 12.1 RU2

Hi Guys,

We have SEP 12.1 RU1 MP1 configured in HA mode (2 SEPM servers with same priority). Now we need to upgrade to version 12.1 RU2 for Windows 8 support.

I have found this excellent guide for upgrade but what should be the sequence to upgrade two SEPM servers running with same priority in HA mode.