Hello I was not able to locate another package version aside from Nautilus. It appears to be a Nautilus only release. Although it wouldn't be a supported method you could download Nautilus and copy the firmware file out. You might be able to use that firmware with another application to perform the update. I would not recommend doing that, but even though Nautilus appears to be our only method for performing the update other unsupported methods may be possible. Thanks
The readme for the nautilus fw upgrade suggests a fw is available. However I am used to doing all from within the OS. Is there no windows utility? * Firmware Version GA0A *GA0A for Seagate SATA(7.2K rpm 3.5" SATA) 1TB, 2TB, 3TB, and 4TB Hard Drives. Dell. Vendor model numbers  ST4000NM0033, ST3000NM0033, ST2000NM0033, and ST1000NM0033Fixes and Enhancements======================Initial introduction of the 500GB SATA capacityInitial DEFT introductionCorrects several issues where a drive hang or timeout conditions can resultDrive error recovery FW improvements and enhancementsMaintenance and health update 
ST4000NM0033 fw updare (nautilus only?)