Dell Emulex Family of Adapters - Manual (Page 468)

Offline and Online Adapter Management Utilities Version 10.2 User Manual P010071-01A Rev. A
3. Adapter Management Utility Command Line Interface
Downgrade (/downgrade or /g)
468

Using the firmware subdirectory, the Adapter Management Utility
automatically discovers the best matching firmware for each installed and
supported adapter.

If multiple versions of firmware or boot code are found for an adapter, the
Adapter Management Utility uses the most recent version when performing the
firmware download.
Downgrade (/downgrade or /g)
Usage: /downgrade or /g
The downgrade switch downgrades the firmware or boot code of each adapter if the
currently installed versions are more recent than the downgrade versions. This switch
cannot be used with the /update or /rewrite commands.
Example usage:
./elxflash /downgrade /auto – Downgrades the firmware or boot code using
auto-discovery.

The fwmatrix.txt file is ignored. You must place the desired downgrade
versions of firmware or boot code in their respective directories.

If the downgrade versions are older than the currently installed versions on the
adapter, then the downgrade versions are downloaded to the adapter.

If multiple downgrade versions of firmware or boot code are found for an
adapter, the next-previous downgrade versions are downloaded to the adapter.

When performing the boot code downgrade operation, the Adapter
Management Utility first tries to match by adapter family and boot type. If a
match is not found, the Adapter Management Utility then tries to match by boot
type. If the utility matches by boot type and multiple versions of boot code are
detected, downgrade chooses the downgrade file in the following order:
1. Universal (U)
2. Pair (P)
3. Open (O)
4. EFI (E)
5. x86 (B)
./elxflash /downgrade – Downgrades the firmware or boot code using the fwmatrix.txt
file.

For each installed and supported adapter, the current firmware or boot code
versions are compared with the versions specified in fwmatrix.txt.

If the downgrade versions in fwmatrix.txt are older than the currently installed
versions, the downgrade versions of firmware or boot code are downloaded to
that adapter.