AD-7633A firmware update



I got AD-7633A in USB enclosure connected to my netbook. I tried to update firmware via GUI binflash to modified firmware. I got error saying “unable to send firmware to drive”. After that I seccessfuly dumped firmware off the drive and I do see diffirience with “original” firmware on Liggy’s and Dee’s website. My firmware has Feb26, 2007 in it while one I’ve downloaded has Dec22,2006. Is there any possibility to make new firmware for my drive? What should I do?