Boards manager in version 1.8.8

I was using the version 1.8.5 and it was just fine. Got a message there was un update , so I got the
version 1.8.8 , But that was a nasty surprise… I am working with the Wemos D1 mini since some
time but in the new version that board is not more included , as well as a lot of others it seemed…

Tried to reinstall the 1.8.5 again but there was the same problem

What to do now ?

Please help… this is a disaster !

KalleL

(deleted)

Thanks for answer , will try