Force10 S50 firmware

I'm sure this has come up before, but I'm having trouble locating software/firmware updates for two older Dell Force10 S50 switches. Warranty ran out on these in 2021 but they hadn't been updated in a long time and I'm not even sure what the latest Software version available for them is.

Currently running 8.4.2.7. We have other Dell switches under warranty with Dell, just not these anymore as they aren't being used in production.

Is software/firmware available for download for these somewhere that I just haven't found yet? Or do they have to be under warranty for it to be available, probably in my digital locker like the newer S series?

Any help would be appreciated. Thanks!