Chapter 10. Maintaining Your Controller206 3ware 9550SX Serial ATA RAID Controller User Guide5 Load the driverkldload twa.koIf units are present, you should see unit information in the systemlog (usually, /var/log/messages).6 If you wish to load the driver automatically every timethe system is rebooted, add the line 'twa_load="YES"' to thefile/boot/loader.confUpdating the Firmware Under Linux and FreeBSD1 Download and extract the firmware, as described on page 190.2 Backup any critical data prior to updating the 3ware firmware.3 Change the directory to the location with the extracted files, whichinclude tw_update.4 Run the tw_update utility:./tw_update fw=/mnt/fw/9550sx/prom0006.imgThe utility shows the version of the driver and firmware included in theutility, the versions currently installed on your controller, andrecommends whether to upgrade the firmware or not.Warning: We strongly recommend backing up your data before updatingthe firmware. Updating the firmware can render the device driverand/or management tools incompatible. It is recommended to havea copy of current firmware image for rollbacks.Examining compatibility data from firmware image and /c0 ...New-Firmware Current-Firmware Current-Driver Current-API----------------------------------------------------------------------FE9X 3.01.00.028 FE9X 3.01.00.027 2.26.04.004 2.00.00.084Both API and Driver are compatible with the new firmware.Recommendation: proceed to update.Given the above recommendation...Do you want to continue ? Y|N [N]: y5 If the firmware is newer and the recommendation is to proceed, type Y andpress Enter.Downloading the firmware from file /mnt/fw/9550sx/prom0006.img ...Done.The new image will take effect after reboot.6 Reboot your system to flash the firmware upgrade.