hanke

No just unzip the main file..then move all the files to the sdcard fat32 formatted.  Just do as the instructions say.

Good luck..

I don't have a 495 Pro, have upgraded 1800 and 1900s.  Basically what ever is in the zip file from the download you just put those files into the main part of the SD card.  If there are other zipped files there don't do anything with them, just move them over as well but don't unzip those.  Just copy all the files from the unzipped download to the card.  Do the reboot procedure which forces the device to read the sd card and should boot you into an upgrade process, steps 7,8 and 9.  Really not much else you should need to do.

Good luck, start over and do all the steps listed to do the upgrade.  Maybe try another SD card and make sure its formatted Fat32 before you move the files over from the unzipped download.  Also make sure the download firmware is made for you exact model or else that can brick it .