Warning: You may brick your phone and/or lose all your data. I'm not responsible for any problem it may cause you. If you're not sure you can do this, then don't.
I just could not wait anymore, so I found a thread over xda-developers on how to download the official update, put on your micro sd card and update your phone.
1) Download the update from google website:
https://android.clients.google.com/u...-RC19+RC28.zip
2) Rename the file you just downloaded to
update.zip
3) Copy the file
update.zip to the root of your micro sd card.
4) Now turn off your phone and turn it back on while holding the
home key.
5) When you see a triangle with a exclamation sign and a phone, slide open your keyboard and press
ALT-L to display the menu and then
ALT-S to start the update process.
6) Wait for the update to finish. If prompted, press
Home + Back to restart your phone.
7) Wait a little bit more and done!
Some pictures:
