here is an update:
I had to use localhost:21
this took me many hours of searching around. finally it worked only with those paramters.
I of course had then another problem : update cant write temporary file.
but that was easy.
I changed the file permission on the whole wp-content folder and all other folders and files in it to CHMOD 0777
did my upgrade …… it took many many minutes to finish… but finally made it
then changed back the chmod of wp-content to 0755
thank you Otto for this kind advice.
am having the same issue, and adding :21 did not help
any ideas ??
(am here on a server running linux with plesk. on my other server with cpanel, this upgrade worked like a charm)
