The Holox BT541 uses the Skytraq Venus 521 chipset which supports AGPS. Skytraq provide a free AGPS download application for Symbian and Windows. Time to lock, and typical accuracy are very good when AGPS is used (can be a bit tempramental without it). Early firmware versions had problems with track drift (firmware is upgradeable, but difficult to find the latest version).
GPS Compass Explorer v1.53 Apk [Ad Free] [Latest]
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