upgrading Squeak3.8 to 3.8.1

You can upgrade any Squeak3.8 image to 3.8.1 (6744) by executing the
following code (it will rewrite the old update server adresses, cause
they doesn't seem to work at all, by now) ->

SystemVersion newVersion: 'Squeak3.8.1'.
Utilities updateUrlLists setContents: #(#('Squeak FTP Updates'
#('ftp.squeak.org/'))).
Utilities updateFromServer.