Bad firmware?

[Rhinox]

Did anyone try to flash LSI-9266/M5016 with 23.29.0-0016 firmware? After I did, I'm experiencing problems with supercap. At boot-up I get a message:

"...battery is missing or malfunctioning, or the battery is unplugged, or the battery could be fully discharged..."

I'm pretty sure I never seen this message with previous firmware version (23.28.0-0015). Supercap does not take any time to charge (ok, only very short), so it should not be "discharged". I have two identical controller, so I took supercap from the other one, attached to this controller (with updated firmware), and guess what! The same message...

Then I tested both supercaps with the other controller (still with previous firmware). No problem was detected. This bring me to assumption there really might be something wrong with the latest firmware...
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UPDATE: I flashed back the previous firmware (23.28.0-0015):
./storcli /c0 download file=mr2208fw.rom noverchk

Guess what? Yes, the problem with battery/supercap dissapeared. So there is definitely something wrong with fw 23.29.0-0016...

 

[Rhinox]

UPDATE 2: apparently LSI/Avago discovered this problem and released new firmware some time ago (23.32.0-0009). But apart from controller-firmware, one more step is required: "Gas-Gauge" (GG) firmware update (part of CacheVault).

Update-instructions are quite clear in the attached pdf-file, but unfortunatelly I did not find current (old) GG-firmware and I do not know how to extract it from CacheVault using StorCLI. So as I see it there is no way back if something goes wrong (as it was with controller-firmware I described above). While this is my "production" esxi-server I decided to stick with the old firmware (23.28.0-0015) and not to update. If someone else did go through this step, please share your experience...