You've not said specifically what the instructions you followed, were... but I'm going to guess you have a V6 (rather than a TiVo) and have used the "clear all and delete recordings" reset option? That's not what I'd have suggested for a simple "to be announced" error, but all the same - you've probably done it now!
If that is what you've done, and your V6 is now stuck in a boot loop, then officially (as per sticky post ) your box will now need replacing. Many users have found success by doing the following..
Turn off the V6 at switch; then on the V6 box hold down both the power button and the +button at the same time. Then turn on the V6 again whilst keeping hold of those buttons for a furhter 30 seconds. The box should reboot, the power button will turn blue, and it should reset and boot up normally
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