You should explain how your device got "bricked" and symptoms so you can get the most relevant help.
Confirm your HWID is 1305 then Download the latest FW directly from Garmin.
[Only registered and activated users can see links. ]
Use GarminCure3 selecting "cure" it will create the 1305010000490.rgn
You should have Updater.exe in the same folder.
[Only registered and activated users can see links. ]
Everything is explained clearly in Post # 1