Today version 2.5.1 of the installer app was released. The biggest change is that it offers two options for the system files on Qualcomm phones: generic and generic (old). The old option is what was installed by the earlier versions of the installer app. If your phone so far worked there is no need to update or switch to the new version. The new option is necessary for the Sony Xperias with Lollipop, but it should work for other Qualcomm phones as well.
Another change fixes the problem that the automatic reboot in the installer app did no longer work with Lollipop.
MediaTek equipped phones no longer get the Bluetooth patch installed, it caused Bluetooth to no longer work after reboot. That means that MediaTek phones don't connect to all cars, see also here.