You should keep desperate because you're joining GPSPower at a very wrong moment of its life.
Very soon it will be unuseful to use Universal Firmware Patcher for Protected Garmin Devices because you won't find copyrighted stuff on this forum anymore.
Read forum rules for that !
As far as I'm concerned I didn't have any issue to use Universal Firmware Patcher on my Nüvi 68 LM.
1- Copy updater.exe file and .rgn file into a same folder.
2- Drag and drop .rgn file on updater.exe to open Updater.
3- Tick USB in opening window.
4- Connect USB cable on Nüvi and press upper left screen corner.
5- Connect USB on computer while keeping pressure on upper felft screen corner.
6- As soon as GPS name appears on updater window (don't be afraid if Nüvi 57 appears instead of Nüvi 67), tick "OK" , still keeping pressure on screen.
7- Keep pressure on screen during all flash processing (20 to 30 seconds) up to Updater displays "Success".