Every Power System has a built in Firmware which controls the Hardware and the service processor. It is very important that your server has the correct Firmware version which supports your IBM i OS Version. So from time to time you should check if your Firmware version is still up to date. In earlier releases you have to go to the System Service Tools and run a LIC macro, but since V6R1 there is a new command "
DSPFMWSTS" which shows you the currently installed firmware on your permanent and temporary boot side and what firmware is currently active.
As an additional info you can see whether a Server IPL is required to activate a firmware update which you have installed shortly.
Links what firmware version is recommended on which Hardware and OS.
Recommended Fixes for Server Firmware on Power 8
Recommended Fixes for Server Firmware on Power 7
Recommended Fixes for Server Firmware on Power 6
Recommended Fixes for Server Firmware on Power 5
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