GarminNuvi wrote:Welcome to the forum.
What are you trying to do ?
Thanks much for responding. Generally I'm trying to change my default firmware 590 on GPSMAP276Cx to patched firmware 590 in order to unlock device. After exploring forum and it's topics I have:
- patched firmware 590 for GPSMAP276Cx file GUPDATE.GCD
- I know, how to launch device in pre-boot mode
- I know, how to clear Non Vol after flashing process is finished
But I can't understand, how to change original firmware. What apdater should I use? GarminCure3 tool or WebApdater from Garming website? What are the steps? Because all the information from the whole thread is somewhere out of date, or with broken links.
I was carefully exploring forum, but mentioned points and steps are still not clear. And I'm afraid to make a fatal error, that causes "brick mode" for the device.