after the euro maps upgrade does not start stuck on " insert an SD card ".when insert sd card write "sd incorrect " what is wrong
Sounds like your update failed and left your unit in an unstable condition. It wants to continue the update, but there is apparently something wrong with the files you are using. I can't help with that, but it is possible to abort the update so you can use the unit.
You need to get into TestMode. If you don't have it, download SuperTestModeKey.Zip and unzip it.