Upgrade to Bluetooth 4.0?

Discussion in 'iMac' started by Richdmoore, Jun 6, 2014.

  1. Richdmoore macrumors 68000

    Richdmoore

    Joined:
    Jul 24, 2007
    Location:
    Troutdale, OR
    #1
    Hello, I have been reading some about the new Yosemite OS, and it sounds like bluetooth 4.0 might be needed for some of the new features involving connectivity with ios. I currently have a 2011 imac, and it only has bluetooth 2.1.

    I can buy a dongle with bluetooth 4.0, but I am unsure if I can simply plug the new usb bluetooth in, or if it is more involved than that. Can both bluetooth devices work at the same time, or do I have to turn the internal one off and repair all my devices.

    Also, would this disable the keyboard commands used at startup (I use an apple bluetooth keyboard), such as the option or recovery partition?

    I may just have to purchase a dongle and experiment, but any one who has already tried to do this would save me a bunch of time trying to figure out how easy or hard it is to upgrade to the latest usb using a usb dongle.
     
  2. gforce216 macrumors 6502a

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    Jun 17, 2009
  3. macsforever macrumors member

    macsforever

    Joined:
    Jun 7, 2014
  4. iMacBooked macrumors 6502a

    iMacBooked

    Joined:
    Jul 19, 2013
    Location:
    4 8 15 16 23 42 ✈ Country: Belgium
    #4
    I believe you can use both at the same time. I'm not 100% sure though.
     
  5. Richdmoore thread starter macrumors 68000

    Richdmoore

    Joined:
    Jul 24, 2007
    Location:
    Troutdale, OR
    #5
    Experiments

    I received the USB dongle today, and ran some quick experiments.

    1. It looks like only one bluetooth (active or USB) can be active at any one time. I was able to switch them using both the bluetooth explorer app (Xcode developer tools), and also by simply removing all the pairings and turning off the internal bluetooth. Rebooted with the USB bluetooth in place, and when I turned it back on it used the USB dongle instead of the internal bluetooth.

    2. I was able to use System information to easily check to see which bluetooth was active. Got to system report. Go to the bluetooth tab, and look under LPM version. Bluetooth 2.1 is 0x4. Bluetooth 4.0 is 0x6.

    3. Bad news on one front however. Once I got the bluetooth 4.0 dongle working, I lost the ability to use the keyboard boot commands with the apple wireless keyboard. I don't have an apple wired keyboard to test, but if bluetooth 4.0 is required for compatibility with the new features of Yosemite, then I may have to invest in a new wired keyboard.
     
  6. bensimpsy macrumors newbie

    Joined:
    Sep 5, 2013
    #6
    Can anyone comment on the possibility of upgrading the internal Bluetooth module?
     
  7. crsh1976 macrumors 6502a

    Joined:
    Jun 13, 2011
    #7
  8. Richdmoore thread starter macrumors 68000

    Richdmoore

    Joined:
    Jul 24, 2007
    Location:
    Troutdale, OR
    #8

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