I just had a Bolt failure last week. I bought it in early 2016 (Sept 2015 build date). After the house power was turned off and on, the BOLT came up with all the front LEDs blinking. I think this indicates a hard drive failure. As others noted, the unit always ran quite hot, not good for hard drives. After trying a few things, Tivo customer service replaced the unit for a fee. I didn't have an extended warranty.
Now trying to figure out how to go back to the Tivo Classic interface.
Now trying to figure out how to go back to the Tivo Classic interface.