Hi guys, I have tried looking for files that may help in regards to upgrading the DTP-H1500 A's firmware but have not found anything. Also all the threads i have found on this topic are now outdated. I know there are people running firmware version 6 on their test tools and i would like to do the same. I read that in order for me to do this, i need to update the firmware to version 4, so then i can apply the version 6 update from memory card. Is this correct?? I have read that version 4 firmware is not available from Sony. Is this true? How do i go about getting the latest firmware for my DTP-H1500 A?? Is it possible for me to contact Sony and get the needed update cd's from them?? If not perhaps someone could inbox me with further information?? Also is it possible to run custom firmware on this testing tool??