A few months after the first rumors of Android 5.1, Nexus 5 owners began to receive official update "on-air". In February, the fifth Nexus was seen with OS version 5.1 benchmark Geekbench, and in March, it was possible to download the official images of Android 5.1 for manual installation.
Now, to get the freshest Android does not need prodelyvat complex actions, and simply wait for their turn. Recall that the main innovation is the function Android 5.1 Device Protection, which completely blocks the smartphone and can do a full reset.
Also, the new assembly is brought fix many bugs and improved stability of the device.