Hi,
It was attached to a post at Espressif forums. I did not keep track where it was
as I was trying just about anything.
As my ESP-01s had SDK 1.5.4, I tried an earlier download tool and it worked, I then just looked for later and later versions until I reached V3.4.4
All were attachments in post at the forum.
I tried to upload the ZIP but got 'entity too large' error.