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Date:      Sun, 23 Nov 2025 23:06:00 +0000
From:      bugzilla-noreply@freebsd.org
To:        net@FreeBSD.org
Subject:   [Bug 290793] iovctl on mlx5en won't work
Message-ID:  <bug-290793-7501-WRVXsB6xLN@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-290793-7501@https.bugs.freebsd.org/bugzilla/>
References:  <bug-290793-7501@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=290793

--- Comment #18 from David BOYER <jcduss13@gmail.com> ---
(In reply to Bjoern A. Zeeb from comment #16)

The download list of firmwares is available here:
https://network.nvidia.com/support/firmware/connectx4en/
There are two firmwares

1) MCX416A-CCAT: the name looks exactly like your model but the firmware is old
to find it manually: archive versions -> 12.28.2302 -> MCX416A-CCAT ->
MT_2150110033
the direct link is
https://www.mellanox.com/downloads/firmware/fw-ConnectX4-rel-12_28_2302-MCX416A-CCA_Ax-UEFI-14.21.17-FlexBoot-3.6.102.bin.zip

2) MCX416A-CCA: without ending T but the firmware is recent
to find it manually: current versions -> MCX416A-CCA -> MT_2150110033
The direct link is
https://www.mellanox.com/downloads/firmware/fw-ConnectX4-rel-12_28_4704-MCX416A-CCA_Ax-UEFI-14.21.21-FlexBoot-3.6.103.bin.zip

That being said, both files read 'MCX416A-CCA_Ax' so I think it is a better bet
to test the recent one.

There are some information here to flash the firmware:
https://docs.nvidia.com/networking/display/mft/mstflint+burning+a+firmware+image
In summary
# mstflint -d <device> -i <fw-file> burn
where <device> is pci0:2:0:0 for you and <fw_file> is the firmware found in the
archive

Then reboot

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