You can find direct download links on the downloads page.
Changes:
- fix transports not killing their transportees when they should
- update installer shortcuts
- when kicking a player, kick only the player and don't disconnect everyone
- fix invalid command spam
- fix some divisions through 0
- fix crash for all players when someone gives away all his units
Note 1:
To make the update work properly, you need to quit all spring related applications before installing it, this includes springdownloader and the Lobby.
Note 2:
The settings where not imported right into 0.77b2. This have changed now, it will use your old settings again (and with each further update). So please excuse that you need to adjust your settings for 0.77b3 again.