Thank you so much for your support!

I read all of the links you listed and I have a feeling that entering pre-boot mode is a crucial step to continue further. I understand it usually requires pressing down on a specific touch screen area while plugging the USB cable in.
Well I tried all the corners, above G and G letter in "Garmin" but no success so far. There are 4 touch keys below the screen so I will try to play with it a little more but it seems the combinations are endless.

Thanks again! I really appreciate your help.

BTW. I wanted to get the UID in order to see if one can download the fimware from Garmin website instead of the WebUpdater package. Reading through the Cure tool thread I discovered there actually is a way to do this easilly without UID. Awesome!