On the DD-WRT forum, "experts" say to do a 30-30-30 to have a good reset.Others say it's risky because it can brick the router, only a simple hard reset is sufficient.Who's right?
All depends on the situation. If a hard reset does not work, try the 30-30-30.
30-30-30 is only for a really really bad NVRAM, right?
Pretty much it's a last ditch effort to get the router to at least talk. You have to downoad firmware to it at this time.