SHD-16S1S Firmware

I just recieved my drive yesterday and have extracted the firmware into a bin file.Omni patcher will open the firmware but it wont allow me to speedpatch it.I would like to increase the read speed of the drive.I read the new version of omnipatcher supports the later versions of the firmware for this drive.Could someone tell me where to get the firmware that will speedpatch with omnipatcher.the drive id is SHD-16S1S-05.Thanks for any help.