Dec 03, 2014

Will Bluetooth 4.2 be backwards compatible with older Bluetooth devices?

Will Bluetooth 4.2 have backwards compatibility with older Bluetooth devices?
From the update to an article on Ars Technica:
Apparently some but not all Bluetooth 4.2 features will be available as an update for older Bluetooth adapters. "Privacy features may be available via firmware update, but it does ultimately depend on the manufacturer implementation," a representative for the Bluetooth SIG told Ars. "The increased speed and packet size features will require a hardware update."
It looks like there will be backwards compatibility, albeit with some limitations, according to the Bluetooth Special Interest Group website:

“Devices implementing only the low-energy feature (Bluetooth Smart) in Bluetooth 4.2 will be backward compatible with Bluetooth 4.0 or 4.1 devices that also implement the low-energy feature.

Devices implementing the Basic Rate/Enhanced Data Rate (BR/EDR) Core Configuration will be backward compatible to all adopted Bluetooth Core versions beginning with 1.1 that also implement Bluetooth BR/EDR.”
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