How to Fix Android 5.1 Installation Problems

Nexus users that aren’t running custom software should take another route. If the Android 5.1 Lollipop installation process gets corrupted in any way, it would be smart to clear the device’s cache partition. To do this, Nexus users need to follow these basic steps that outline the process:

[ul]
[li] Press and hold Power and Volume Down buttons simultaneously until you see something other than Google on the screen.
[/li][li] You should see a large arrow at the top of the screen.
[/li][li] Tap Volume Down repeatedly until you see Recovery in the arrow. Then tap the Power button
[/li][li] You should see an android on his back, chest open with a red triangle and exclamation mark.
[/li][li] While holding Power button tap Volume Up once then release Power.
[/li][li] You should now see a list of items at top of screen.
[/li][li] Tap Volume Down until the item to erase or wipe the cache partition is highlighted. Then tap Power button to initiate.
[/li][li] Status messages will appear at the bottom of the screen. Be patient – it can take 10-15 minutes to complete. When done restart the Nexus.
[/li][/ul]

Nexus users report that these steps have worked to get the installation process unstuck and it’s something to try if the Android 5.1 Lollipop installation process stalls.

If that none of that works, let the Nexus phone or tablet die, recharge to 100% and try installing again.