Hello, I need firmware update for Seagate Cheetah 15k4(ST373454LW) and 15k5(ST3146855LC) and also X15(ST336752LW). I have these disc but some of them is original Seagate and other is OEM HP or Dell and I like to flash all with newest Seagate original FW. So please let me know where I can find original Seagate FW for these HDD + flash utility. Best will be flash utility in Boot CD form if exist but DOS or USB etc. will be good to. For Dell drives I have Utility with have also latest Dell firmware for all my HDD, but that is not ideal solution for my. Also if I like to use it, I will must use just that FW and some extra utility because Dell Nautilus utility not detect disc with non-dell FW so cannot be flashed with Nautilus. Of course if you send me info on mail I will leave all FW and utility just for my - not any uploading anywhere. Many thanks for all infos.