IBM regularly release updated version of their firmware, I have created this pdf and this excel spreadsheet which you can download, but do double check the information with the IBM support site and test the firmware in your environment.
Below, I’ve written the server model with the date of the online firmware that is downloadable on the IBM site, the latest supported firmware. I intend on checking this once a month, but do check the IBM site as well:
Server model Firmware version+date
System x3650
System firmware x3650 2008-05-13 - v1.10
Baseboard Management Controller 2008-05-14 - v1.44
Remote Superviosr Adaptor II 2008-04-17 - v1.08
ServerRAID MR10M controller 2008-02-14 v8.01-0029
IBM Ultra320 SCSI controller 2008-03-04 - v4.30.2
System x3755
System firmware x3755 2008-05-27 - v1.00
Baseboard Management Controller 2008-05-27 - v1.01
Remote Superviosr Adaptor II 2008-05-27 - v1.04
ServerRAID MR10M controller 2008-02-14 v8.01-0029
IBM Ultra320 SCSI controller 2008-03-04 - v4.30.2
System x3950 M2
System firmware x3950 M2 2008-03-11 - v1.03
Baseboard Management Controller 2008-01-03 - V2.11
Remote Superviosr Adaptor II 2008-01-24 - v1.15
ServerRAID MR10M controller 2008-02-14 v8.01-0029
Blade LS20
System firmware LS20 2008-01-09 - v1.27
Baseboard Management Controller 2007-12-19 - v2.21
Management Module Firmware 2008-06-02 - v1.42D
Blade LS21
System firmware LS21 2008-05-27 - v1.06
Baseboard Management Controller 2008-04-27 - v1.24
Management Module Firmware 2008-06-02 - v1.42D
Blade LS41
System firmware LS41 2008-05-27 - v1.06
Baseboard Management Controller 2008-04-17 - v.124
Management Module Firmware 2008-06-02 - v.142D
Blade HS20
System firmware HS20 2008-05-07 - v1.12
Baseboard Management Controller 2008-03-25 - v1.33
Management Module Firmware 2008-06-02 - v1.42D
Blade HS21
System firmware HS21 2008-05-22 - v1.12
Baseboard Management Controller 2008-04-17 - v1.12
Management Module Firmware 2008-06-02 - v1.42D

