I attempted updating my iPhone4’s software to iOS 5.0 three months ago but it was disconnecting every time with my WISE 512Kb connection. I had to wait until I got my 1Mb DSL connection and I was finally able to upgrade to iOs 5.1 this morning. It took me 3 or 4 attempts but it finally worked!
DSL so far is proving to be much faster than WISE. In fact and since I still have my WISE connection until the end of the month, I will attempt downloading the same file at the same time and see how long it takes using each connection.
Unluckily for me though, it seems that the Apple is experiencing some technical difficulties as I am unable to download anything from the App store neither from my iPhone nor from iTunes on the laptop.
Update: AppStore and ITunes are working now.