We have a commercial certificate on our GMS server.
This needs to be replaced.

How do I replace it and in which directories I do need to change it?
In my install documentation of the GMS I created a special dir for the certificates /certificates/mobility.pem , do i also need to change it there?

Do i need to change it on multiple places or only on one place?

Will it have impact on the devices ? We have androids , blackberry, ios, windows phones..