The LPAR-Tool makes it easy to determine the currently installed HMC version for all HMCs:

$ hmc version
NAME   VERSION  RELEASE  SERVICE_PACK  BUILD_LEVEL  BASE_VERSION
hmc01  10       2        1030          2211152246   V10R2
hmc02  10       2        1030          2211152246   V10R2
hmc03  9        1        942           2011270432   V9R1
hmc04  9        1        942           2011270432   V9R1
hmc05  9        2        953           2304130235   V9R2
hmc06  9        2        953           2304130235   V9R2
$

You can display the installed iFixes using the option “-i” (iFixes). It is best to specify only one HMC as an argument (otherwise the output can be a bit longer):

$ hmc version -i hmc05
hmc05   V9R2 SP953
   MH01883 - iFix for HMC V9R2 M950
   MH01900 - Restore fix for HMC V9R2 M950+ [x86_64]
   MH01904 - HMC V9R2 M952
   MH01916 - iFix for HMC V9R2 M952
   MH01921 - iFix for HMC V9R2 M952
   MH01924 - iFix for HMC V9R2 M952
   MH01933 - HMC V9R2 M953
   MH01937 - iFix for HMC V9R2 M953
   MH01953 - iFix for HMC V9R2 M953
$