IBM support asks that currently active system firmware level (MHxxxxx) be deactivated, so the
system can run on the older level. How is this accomplished?

A.
Run command DLTPTF PTE (M) RMV (*TEMP).

B.
Run the WRKFMWSTS command. Select option 4 on the *TEMP line and press “enter”.

C.
On the system panel, change the IPL mode to “B” and “P. Then restart the system.

D.
Run command RMVPTF LICPGM(5770SS1)SELECT(MHxxxxx) DELAYED(*YES),then restart
the partition.