Thanks Catymag for the .gcd file and the procedure again, its worked and revived my gps working perfectly finally and kudos to all creators and contributors of gpspower.net. Garmin support team in Australia clearly don't know what they are doing and the way they keep you on hold I don't know for how long trying to check something to tell you like pre-booting the gps. Though for those who will encounter such a situation and find that their updater.exe its not poping up the reason is because the cured file should be cut from the new created folder and pasted back into the same folder where the updater.exe file is for it to work.