AMPS SDK 5.0.3 Release Notes
Fix For AMPS Dispatcher
Package Manager vs atlas-update
It is recommended that if you use a package manager (such as apt-get, yum, rpm, brew) that you do not use the atlas-update script, as otherwise you'll be updating the SDK within the same versioned directory as the current installation. This can cause the package manager to get confused with the currently installed versions, and removes your ability to easily regress to an earlier version.