From what I understand in the 8000 the most recent jumps did the following
-dropped the 31 sat limit
-Added Channel Quick Find
now that was the previous factory. I guess you could load it and if its bad, just go back to what you had. You would need the "clean" file which wipes out all software so you can go backwards but it works
Yeah, re the 31 sat limit.... I hope that they improved that a bit compared to what I've seen in an obsolete hacker version I've tried, that have this improvement. What I've seen is that they had about 4 "user" sats, which you could use for sats like AMC21, which wasn't on their list, however there was no way to give this USER sat a longitude, so it would always be out of place, and couldn't be used with USALS (I think... I was using it with a fixed dish, so I didn't try). Anyway hope this version fixes that.
Re the "clean" file, I think I mentioned this in another thread recently, but that clean file doesn't seem to erase EVERYTHING. On 2 or 3 occasions, I have (1) deleted channels, (2) reset to factory conditions, (3) loaded the CLEAN file, and (4) loaded old factory firmware, then (5) loaded new firmware, and when I went to start loading channels, I found that channels were still in the receiver from before, even though I deleted them then cleared them.
I think the thing was that I was going between a versions with the 31 channel limit and versions without the 31 channel limit, and they must store channels differently enough that you might erase them in one version but they reappear in other versions.
But in any event, I was under the impression that the CLEAN file started a short program (it's only about 16 bytes long) that actually cleared out the memory, but if it is, it apparently doesn't clear out ALL of the memory. Either that, or the function of the CLEAN program depends upon (ie calls routines) the version of firmware loaded at the time. I recently ran into a problem where my 8100 started rebooting over and over without ever coming up. I loaded the CLEAN file, and factory bin, but it was still doing it, but I repeated this 2 or 3 times with different versions of firmware, and eventually got it to stop rebooting.
I'm also hoping that this new firmware will fix a very annoying problem I'm having, and that is that my 8100 no longer works on the 3 SR=4444 PBS transponders on AMC21. They break up very badly, even though other receivers attached to the Coolsat's passthru play them perfectly. I'm afraid though that this must be a hardware issue.