2/i think it's better to have the last firmware there are less bugs.
3/you have to traduce yourself the firmware if you want to change the language(other than inglish or chinese) with the program "ressource editor"(do a research in the forum) or download a firmware yet traduced(if it's exist) sorry for my poor english.
adam, at least it's understandable, there are some people who speak gibberish. Kano, "if it ain't broke, don't fix it". Seriously though, if your M6 is working fine, just leave it alone. If you need the new features, then upgrade.
You english is good adam. It isnt perfect but it is readable and very understandable! ^^
Currently i have the 2.004.4 Version
Is there anything wrong with this one? Do the new ones have anything that mine has wrong?
I would like to add Korean and Japanese though. I don't like english too much and dont understand chinese T^T
And just out of curiousity ^.^ are there any other games that you can put on?