Hi.the soft on your mmi 2g high is 5140 , there is one newer 5570 but you will not feel any diffrence as the update brings few little changes .
Also there is no faults issues from updating to 5570 , i have done it on mine and no issued
So its really your choice 🙂
Green menu, battery meter , etc so called "vcds mods" are done by coding via vcds ( or carista or obd11 ) and have nothing to do with the mmi soft as you code individual modules , not the mmi ...
you can also update maps ( £15 -20 ebay ) . They come on dvd , but check before if you can eject the old one ( factory locked , can be enabled by codig )
if you need any help please message me