Updating the firmware on Promise arrays is straight forward enough from the WebPAM. But what happens if a firmware update goes funky and you can’t get into the WebPAM any longer (ah, the joys of beta testing)? Well, you can always download an older firmware and reload it provided you can ssh or telnet into the host. Download from http://www.promise.com/support/download.aspx?m=93®ion=en-global for your given model. Then, you need the firmware accessible to the Promise chassis via tftp. A simple tftp GUI tool is available at http://ww2.unime.it/flr/tftpserver. Once configured, log into the Promise array and then use the ptiflash command to update the firmware. In the following command we’ll use the -s option to identify…