Zwift Thinks IMac Bluetooth is Off


I’m getting a message stating my Bluetooth is switched off on my late 2009 Apple IMac. I’ve carried out the Bluetooth reset and it seems fine with mouse & keypad connecting but when I open Zwift I’m still getting the warning triangle stating Bluetooth must be off.

Zwift updated so I’m assuming it’s not a software update issue.

Any suggestions would be greatly appreciated, thank you.

I run Zwift on a mid-2010 iMac running OSX Sierra. In my case (and perhaps yours too), the onboard Bluetooth adapter is not Bluetooth 4.0 compatible so Zwift won’t detect it. My solution was to run everything via ANT+ using a USB adapter and extension cable.

For curiosity’s sake, last week I bought a cheap USB Bluetooth 4.0 adapter off Amazon and stuck it into my iMac. I got the iMac to use the adapter using the following command:

sudo nvram bluetoothHostControllerSwitchBehavior=always

Following a reboot of the computer I could get the iMac to detect everything (trainer and HRM) via the Bluetooth adapter.

However, ANT+ is much more reliable for me so I’m sticking to that.

Thanks Adrian that is great to know. I’ve just ordered a Ant+ dongle & extension as I realised my Garmin Run HRM is Ant+

Adrian did you have any issues with the wireless mouse & keyboard picking up the new BT dongle ?

Not really, the BT mouse and keyboard paired on the 1st and 2nd attempt respectively. I had a wired mouse and keyboard plugged into the computer throughout the process though.