How to solve error message when install to lollipop

Question

Why am I getting an error message when trying to install Lollipop?

How to solve error message when install to lollipop

Answer 1

• Press and hold Power and Volume Down buttons simultaneously until you see something other than Google on the screen.
• You should see a large arrow at the top of the screen.
• Tap Volume Down repeatedly until you see Recovery in the arrow.  Then tap the Power button
• You should see an android on his back, chest open with a red triangle and exclamation mark.
• While holding Power button tap Volume Up once then release Power.
• You should now see a list of items at top of screen.
• Tap Volume Down until the item to erase or wipe the cache partition is highlighted.  Then tap Power button to initiate.
• 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.