Lykke2016 wrote:
Hi!
I have been trying to update my macbook Air from El Capitan to Catalina, but it stops when its almost finished and are stuck saying "estimate", but nothing happens.
Are you saying the download will not complete?
Try a faster Internet connection, a different Network or Ethernet connection.
You can also try a Try a SafeBoot https://support.apple.com/en-us/HT201262
Takes noticeable longer to get to the login screen, does a 5-15 minute disk repair before it fully boots up, and certain system caches get cleared and rebuilt, including dynamic loader cache, etc. Login and try your download.