Side question of Doc id 2113569.1

Hello Experts !

When I reading the Doc id 2113569.1) of FS1-2, I have a basic question.

Within "FS System: Additional Steps Required for Drive Firmware Upgrades for Systems with MaxRep3 (doc ID 2113569.1)", there was mentioned about MaxRep Engine stop procedure before FS1-2 disk firmware update.

As I knew that MaxRep Engine be installed on source/target site both.

Is there no sequences for deregister  and shutdown ? Which site first ?

And Which site coming up first.

Generally. for deregistered and shutdown on source first. then target. When system coming up. target first then source final.

Is it same case on FS1-2 ?