@duckwrangler

You should use [Only registered and activated users can see links. ]. It's the latest one and the product series is discontinued by Garmin. New charts are BlueChart g2 & BlueChart g2 Vision and they aren't suitable for eTrex Vista® HCx.
Code:
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Install the BlueChart Pacific in MapSource and transfer the appropriate map segments to your eTrex Vista unit. Unlock in MapSource (Ctrl+U) with [Only registered and activated users can see links. ] using your unit ID and the MapID 357.