I understand there are a number of versions of the Bluetooth Specification, recently V2.1 with EDR and V3.0 and 4.0 perhaps on the horizon. How do I determine what versions are supported by my bluetooth hardware? (PC USB dongle or internal Laptop H/W) Can I test that my v2.0 or v2.1 device supports EDR (Enhanced Data Rate)? Are the version upgrades purely software/firmware, or are they hardware upgrades?
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