Just make sure you have toggled QA on cfw 3.55 so you have dehashed your PS3 and so you're save to downgrade on any CFW later on. And make sure you have on your ps3 the latest version of multiman. Which now is for CFW 4.50 the Mm 4.50.02
Then you probably don't have any problems anymore.
That's a falsification. If it were bricked nothing would happen when he powered on his system. It's not even a softbrick because his system can most likely still boot into the last CFW. My assumption is that he's either trying to install this on top of a OFW higher than 3.55.
If he's not, my words of advice are to make sure that there's NO PLAYSTATION 3 GAME in the bluray drive. It matters. And then to try other USB ports. If that fails, then download the CFW from another source.
Sometimes downloads fail at like the LAST second but appear to be the full size and can cause issues.