Q: Can not connect to Blue-Tooth devices.

Which devices?

For what purpose?

Check the article below for supported Bluetooth protocols.

http://support.apple.com/kb/HT3647

Well, it should connect to the Bluetooth keyboard, but it will not connect to the mouse.

make sure to disable bluetooth on your other iPad if the devices have already paired to that so they dont just connect to the other iPad. To put the device in pairing just hold down the power button on the side of the apple wireless keyboard until the light starts binking should show up then.

I have my MacBook Pro and i upgrade it from 10.8 to (Mountain Lion) to 10.10 (Yosemite) and I´m having problems to connect devices to its bluetooth: a Sony phone and Snow Leopard Mac. My bluetooth will not recognize any device or show it "not connected".

To solve the problem I looked after the LMP version (0x6), I tried to reset the SMC and the PRAM but it didn't solve my problem.

hope i was clear in my description, thanks.