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##### Recovery for Accidentally Flashing the Wrong Platform Firmware on the Sun Fire X4640 Server

If you accidentally flash the wrong platform firmware onto a Sun Fire X4640 server, use IPMItool to verify the hardware version. For example, if the SP IP address is 10.0.0.13 and the root password is `changeme`, you might enter the command as follows:

    # ipmitool -H 10.0.0.13 -U root -P changeme fru
    FRU Device Description : p0.card.fru (ID 10)
    Board Product : ASSY,CPU BOARD,X4640
    Board Serial : 002555
    Board Part Number : 501-7321-03
    Board Extra : 01
    Board Extra : G4_CPU

If the `Board Product` line lists something other than `ASSY,CPU BOARD,X4640`, then the server has the wrong firmware. Perform the following steps to recover.

## Recovery Steps

The system will not reboot, but the service processor is still functional. You can return to the Sun Fire X4640 firmware.

1. Download and flash upgrade the server to the latest version of the Sun Fire X4640 firmware.
2. Reboot the server.
3. Use `ipmitool` to verify the hardware version.

       # ipmitool -H 10.0.0.13 -U root -P changeme fru

   If the `Board Product` line in the output includes `X4640`, then the server has the correct firmware.

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