Let's Control It

I have updated to 27 and tried to load my config. (but config was very corrupted.)
what can I do about it?

lot's of strange caracters and lot's of white spaces.

During development on R26 we discovered that upload does not always succeed and the ESP will eventually reset itself. But maybe milages will vary in different situations. I've uploaded a few dozen of times, seen some errors but always succeeded at the end. I guess that this is something that you will not do very often.

As far as I can see, your file contents looks ok. Remember that this is a binary flash memory dump so it's actually not meant to be opened in notepad or similar tools.

aha. okay no problem good to know that the file is not for human reading.