e280 v2 firmware - is it possible to revert to older version? If not, still have questions

It behaved as you describe the v1 - “goodbye” if it didn’t need charging, the cute green battery if it did.  And “SanDisk Sansa” when it turned on.

I believe the firmware it came with was 3.01.11A.  You had to force MSC mode, in any case, which I’ve never minded as I put my music on there and leave it alone, with the exception of a very occasional CD purchase. 

Thanks for the info about the firmware - I’m assuming it *does* apply to 11 and earlier, even though you adivse against it due to the “force MSC” issue…?