Hi!
OMG! I finally found strength enough to re-make the "ten-times" procedure to finally unbrick my PRS505...and...
OMG!!! After 10th reset, I found the message that Jeff predicted, and after that I tried to update firmware with PRSUpdater, and...I've pretty found that message changed to "Updating Firmware now"...but It's bricked there!!!
I've found DiabloNL methods (based on SD Card...) but I'd rather prefer to ask here firstly!
HeeEeEeelp!
Thanks!
^_Pepe_^