@miroslavbl
Sometimes rrgn, ergn, xrgn commands aren't present in the firmware of certain devices although that's rare in most modern US/EU devices. I haven't tried using GPSDaemon with modern (Visible storage file system in MSM/MTP) devices however it may work if the devices is placed in preboot mode which mimics the Garmin mode of older (region-only, non-visible file system) devices.
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