Is your TiVo plugged into a UPS (Universal Power Supply)? If not, it should be - at least 350Watts with battery backup. Anything could have been hurt in the TiVo. If you know how to reimage the hard drive that is where I would start.
Looks like I also did it...thanks to posts related to software update 7.2.2. I unplugged my Linksys USB200M network adapter, rebooted the unit by unplugging from the power source, once fully booted up- I plugged back the USB200M, and rebooted the unit again. Then, I connected manually to Tivo, rebooted the system, and so far, it looks I'm good to go.
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