garmin drivesmart 50 how to get preboot mode? I've tried holding upper left corner while pluging in, no use. The device works fine,k I just want to use Universal Firmware Patcher for Protected Garmin Devices to add a few maps.
SOLVED!!!!)))
Hi, how did you get into pre-boot mode? I hold down the top left corner and then connect to USB, but the device still boots into normal screen...
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