@guyhighlander Gerne gemacht!

@halucigenia If you are on windows, or can access a windows, see there : https://forums.ubports.com/topic/4026/solved-problem-upgrading-mx4-from-ota15-to-ubport/13

@advocatux all good, after some more hours trying , got successful to use flyme now.

Sorry took some days,but successful reinstalled 15.04 ,now OpenStore and new apps available, will try some new and old ones out,if they working or not. Thanks for help