UCS B200 M6 Recommended Firmware

[irguazo]

We have 1 UCS 5108 Blade Server Chassis with 6324 FI. Recently we updated the Infra and UCS Manager to release 4.2(2a). There are 8 Blades: 2 B200-M5 and 6 B200-M6. The documentation mention that the minimum release for M6 is 4.2(1d) but in the Software Download portal there is no version 4.1x or 4.2x recommended. 

Note: ESXI 7.0 U2

What version should I need to install on B200M6?

Internal Depencies:

https://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/release/notes/cisco-ucs-manager-rn-4-2.html  

Software Download

https://software.cisco.com/download/home/283853163/type/283655681/release/4.1(3j)

[Steven Tardy · Accepted solution]

UCSM 4.2(2a) is the "starred" version for UCSM per:
https://software.cisco.com/download/home/283612660/type/283655658/release/4.2(2a)
(PS: this "starred" version is a manual process taking into account download counts and high severity CDETs found.)

There was an issue upgrading from certain/older versions of B-series firmware to 4.2(2a) B-series firmware specifically.
This is detailed under CSCwa97427. Due to this CDET the 4.2(2a) B-bundle (only) was pulled from cisco.com.

If it were my infra, I'd probably grab the 4.2(2d) B-bundle.
Or if firmware released yesterday makes you squeamish, then 4.2(2c) B-bundle.
Both 4.2(2d) and 4.2(2c) B-bundles will work just fine with the 4.2(2a) A/infra-bundle.

My guess is the focus was on the 4.2(2d) release and I'd expect 4.2(2c) to be "starred" soon(tm).