iMac Mid 2011 Bluetooth 4.0 internal upgrade

Discussion in 'iMac' started by Czo, Sep 16, 2014.

  1. scroberts72 macrumors newbie

    Joined:
    Jun 22, 2014
    #51
    Sorry all. I forgot to state that I have an iMac Mid 2011 - 27"
     
  2. Cordes macrumors newbie

    Cordes

    Joined:
    Oct 26, 2014
    Location:
    707 Norcal
    #52
    Well gang, I'm a bust so far. I received my OSXWiFi parts, and went to work, but I think I boogered up the adapter card too much, either when trying to scrape the power line on the circuit board or while trying to solder the 3.3v lead. Anyway, with it all connected, my iMac won't even power up. If I remove the power lead, the iMac will power up but won't see either wifi or bluetooth. I wish I had tried the setup before messing with the 3.3v to make sure everything worked, but I didn't. Hindsight is 20/20!

    I hope most of you have younger eyes and better tools (perhaps super fine-tip soldering iron?) I appreciate all the advice I've received on this forum already and would love any other words of wisdom for how you work with such small and delicate wires and circuit boards. Certain wattage for soldering iron? Any tricks of the trade? I probably need to get a lighted magnifying glass (like my 85 year old dad has) to try to do this work under.

    For the record, after reading everyone's advice and experiences, the way I have chosen to deal with the original bluetooth cable and connector, is I chose to cut it off. What I did is I purchased some 5-pin internal usb cables from eBay, one with a male end, others were all female. I also bought a used original iMac combo cable that included the bluetooth cable and connector. I cut off the my original bluetooth cable connector, I removed the component above the bluetooth card and routed the cable back through to where I could get a little more slack to work with. I then soldered on a male 5-pin internal usb connector. I built a cable using a female end to connect to the OSXWiFi adapter, but as you know, that didn't work for me. But what I also did, is I cut off the bluetooth cable I bought from ebay and added a female 5-pin usb connector to it so that I could easily revert to the old bluetooth, which as (bad)luck would have it, I needed to do. Otherwise I'd be writing this from a wired keyboard.

    So that's my experience so far. I'm attaching photos of the 5-pin cabling work I did in case someone else likes that idea and would like to see it.

    And again, I'd appreciate any advice or words of wisdom for trying again. After I buy a new adapter to start fresh. Thanks all! And good luck!
     

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  3. Cordes macrumors newbie

    Cordes

    Joined:
    Oct 26, 2014
    Location:
    707 Norcal
    #53
    more pics...
     

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  4. ECJ macrumors 6502

    ECJ

    Joined:
    Jul 5, 2006
    Location:
    Memphis, TN
    #54
    So my this is my 2nd attempt on my Late 2009 27" iMac.

    1. I ordered the OSXWifi adapter and cables.
    [​IMG][​IMG][​IMG][​IMG]

    2. Then I paired that with the Broadcom BCM9460CD that I ordered from eBay.

    3. I removed the stock wifi adapter.
    [​IMG][​IMG]

    4. Inserted the Wifi/Bluetooth card into the adapter and installed it. Then installed the cable to the connector on the adapter board.
    [​IMG]

    5. Plugged the two cables that came with the OSX Wifi adapter.
    [​IMG]

    6. I unplugged the stock bluetooth card.
    [​IMG]

    7. I wanted to test that the setup would work, without any soldering or cutting. So this looks ugly, but It does work! The 802.11ac wifi works up to 468 Mb/s data rate. The only issue I had was it wouldn't pair with my keyboard and trackpad. One reason is that I don't know which of the two open connectors is for the bluetooth antenna, and the stock antenna won't reach the adapter. So with no antenna attached, that may the reason why it would not pair. So I have to order something else, and try again.
    [​IMG]
     
  5. InfoTime macrumors 6502

    Joined:
    Jul 17, 2002
    #55
    ECJ - looks like you could use the antenna extension that scroberts72 used in post #48

    What length of antenna extension would you need? Can you measure it?

    Sure wish someone would just make a kit that did the extension for us :D
     
  6. ECJ macrumors 6502

    ECJ

    Joined:
    Jul 5, 2006
    Location:
    Memphis, TN
    #56
    Thanks. It's only 8 inches that I need. So this is too long, but I'll just bundle the extra length in the corner.

    So for Late 2009 iMacs, we know that which Wifi/Bluetooth card and which PCI-e adapter. Also that we need D+/- to connect to the PCI-e adapter for bluetooth to work. Just need an in-between for the stock bluetooth power cable and the OSXWIfi cable. That would solve the problem and make it fully reversible, if needed.
     
  7. byulasfjazz macrumors regular

    byulasfjazz

    Joined:
    Jul 5, 2009
    #57
    Mid 2011 iMac

    I have a mid 2011 iMac that DOES NOT HAVE BLUETOOTH 4.0, I was disappointed to find out that I would not be able to use handoff. I was tinkering around and was able to get NOTHING to work.

    Today I was sitting here talking to my wife, when her phone rang, and it popped up on the computer?? I was shocked. I tried calling her from my phone... same result. I immediately tried her hotspot.. BINGO! why??? why is this WORKING????? I have looked at the specs various times I do not have bluetooth 4.0 and have NOT used the continuity activation tool... Answers anyone?? It still does not work on my iPhone 6plus running latest IOS , my wife has a 5s
     
  8. Cordes macrumors newbie

    Cordes

    Joined:
    Oct 26, 2014
    Location:
    707 Norcal
    #58
    I believe that the phone feature uses wifi, not bluetooth 4.0. It works on my 2011 iMac as well. Same with SMS. However, the other handoff features don't work. They use bluetooth 4.0. And my iMac can use my iPhone as a hotspot, but I have to turn the hotspot feature on in my phone first. I have compared with my wife's new macbook air, and all features do work correctly. And for hotspot, she does not have to have the feature turned on in her iPhone settings. Simply being logged into the same iCloud account in her iPhone and macbook air enables the feature. It's pretty cool.
     
  9. briquet42 macrumors newbie

    Joined:
    Oct 26, 2014
    Location:
    Austria
    #59
    Can you please share a picture of the bottom side of your card, so we can see exactly, where you cut the trace on the card?

    Thanks in advance :)
     
  10. scroberts72 macrumors newbie

    Joined:
    Jun 22, 2014
    #60
    See image below. Trace was cut on the top left side of the board. I then soldered a wire to the rightmost pin (pin 52) and connected it to the Vcc wire from the bluetooth adapter.
     

    Attached Files:

  11. Cordes macrumors newbie

    Cordes

    Joined:
    Oct 26, 2014
    Location:
    707 Norcal
    #61
    Thanks for sharing. What did you use to cut the trace?
     
  12. Vic Otting macrumors newbie

    Joined:
    Nov 2, 2014
    #62
    Hello,

    Why did you had to cut the trace for VCC power?
    I don't get it..

    Thank you!
     
  13. mhafeez macrumors regular

    mhafeez

    Joined:
    Oct 30, 2013
    #63
    iMac 2011 Bluetooth connection

    Hi, I had a little researched on my iMac 27"(mid-2011) and I found out that the Bluetooth connections' just next to the PCI-e port. Is it not? (please refer the attached photo)
     

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  14. Vic Otting macrumors newbie

    Joined:
    Nov 2, 2014
    #64
    Yes, it is. But that connector takes care for 2 other connections as well.
     
  15. Cordes macrumors newbie

    Cordes

    Joined:
    Oct 26, 2014
    Location:
    707 Norcal
    #65
    Here's how I understand the issue. This adapter works in a 2011 iMac, but with some qualifications. It wasn't designed for the 2011 iMac. The issue is the newer bluetooth/WiFi combo card is designed to have two separate power sources, +3.3v for WiFi on pin #1 and +3.3v for bluetooth on pin #18. The adapter we are using essentially uses the original WiFi power and connects it to both power pins on the circuit board. The issue is that if you use the adapter and don't modify it, if you turn off WiFi on your 2011 iMac, power to the entire card is removed and you are really turning off both WiFi and bluetooth. So people are modifying the adapter to separate the power leads and then feed the bluetooth power, pin #18 of the card (not the adapter - It's the last pin on the adapter) with the original bluetooth power from the original bluetooth connector. That's why people cut the trace and then solder a new power lead from the original bluetooth cable. I hope that helps. If anyone else understands differently, please share.
     
  16. Vic Otting macrumors newbie

    Joined:
    Nov 2, 2014
    #66
    That's a very useful explanation!!

    Thank you!

    If other people understand my question differently, feel free to tell your answer!
     
  17. rcf362b macrumors newbie

    Joined:
    Sep 24, 2014
    #67
    Cordes,

    Your explanation is spot on. Sorry you had issues with your installation. I recommend double checking your connections, although I'm sure you have triple checked them already. CZO recommended to me early in this thread to check and verify everything using a volt meter while the display was removed and system powered on, which I did. It helped immensely since the wire color scheme seems to differ from iMac to iMac.

    Another user asked what to use to cut the printed circuit on the adapter card. I used a new xacto knife blade and it worked great.

    For everyone else, my system is working great so far except for two things:

    1. My system will not connect to my Apple Airport Time Capsule (802.11 N or AC). It connects with other WiFi N routers just fine, but I don't have any other AC routers to test with. Does anyone have a stable and repeatable experience connecting at AC speeds, and if so what routers are you connecting to? I am wondering if I need to try to manually update the kext for the WiFi card. I have done a clean install of Yosemite so everything in the OS is new.

    2. Is anyone having any mouse movement issues? Occasionally my Magic Mouse lags or has some intermittent tracking. I have a 2013 iMac and have no problems with that one. I have also swapped nice and the problem does not follow to the other iMac.

    I'm glad most of you seem to be having success. Other than the two issues above, my system is running great. I keep the WiFi turned off since I am connected via Gig E. Handoff and continuity are both working great with only Bluetooth enabled.

    rcf362b
     
  18. Vic Otting macrumors newbie

    Joined:
    Nov 2, 2014
    #68
    Hi rcf362b!

    You wrote a very helpful guide.

    But is it still possible to make a well lit picture of the connection between the extension cable (the 3 foot usb extension cable from Radio Shack) and the original bluetooth cable and a closeup picture of the connection point with the red wire soldered in place. And an extra good picture of the place you scraped the trace (near the red wire) would be appreciated greatly!!
     
  19. yifuhood macrumors member

    Joined:
    Nov 3, 2014
    #69
    hey Corban987, please upload some photos , i am really looking forward to your update. Especially the 3.3v power to the bluetooth/wifi ac card adapter,that i do not know , what power adapter that you are using , and how did u put it onto the bluetooth/wifi ac adapter.

    sorry my english , hope that you understand what i wrote.
     
  20. MacVidCards Suspended

    Joined:
    Nov 17, 2008
    Location:
    Hollywood, CA
    #70
    "K" is for "Kludge"

    Guys, come on.

    Not this difficult.

    Is there a iMac repair shop in LA who would like to offer something better than Jumper Cables through a speaker grill?

    BTW, we just figured out how to make iMac GPU cards fully compatible. Just don't have the space and time to make them.

    Anyone in LA ready to do something less Kludgy?

    Need an iMac shop with access to different models, etc. Could be a REAL jump for iMacs left in the past. I just don't have space and time to make them work but I know how.
     
  21. mhafeez macrumors regular

    mhafeez

    Joined:
    Oct 30, 2013
    #71

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  22. Cordes macrumors newbie

    Cordes

    Joined:
    Oct 26, 2014
    Location:
    707 Norcal
    #72
    Congratulations! And thanks for the great photos! I have ordered the same adapater and am waiting for delivery. I've been studying photos and pin diagrams that I can find. So I understand and agree with where you soldered D+ and D-. It looks to me like where you soldered the power lead, it will power both bluetooth and WiFi. Is that true? If you try to turn off WiFi, does it still turn off? Previous discussions have indicated that the WiFi on/off is simply controlled by turning power on/off at the card. Not a big deal, but I'm curious. I'm not sure what pin has the WiFi power on the original PCI-e slot. Do you know? Thanks and congratulations once again!
     
  23. Vic Otting macrumors newbie

    Joined:
    Nov 2, 2014
    #73
    Hi, congratulations!

    I am curious to the answer from Cordes above me.

    But can you tell me what wires are for D+/- and Vcc power?

    Thank you and congratulations again!
     
  24. mhafeez, Nov 19, 2014
    Last edited: Nov 19, 2014

    mhafeez macrumors regular

    mhafeez

    Joined:
    Oct 30, 2013
    #74
    Mini PCI-E adapter configurations

    From the left;

    the 1st pin is the 3.3v (bluetooth) power
    the 2nd pin is the USB D+
    the 3rd pin is the USB D-

    For this setups, your Wifi/Bluetooth will works normally. Turning off your Wifi will not effect your Bluetooth power.
     

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  25. Cordes macrumors newbie

    Cordes

    Joined:
    Oct 26, 2014
    Location:
    707 Norcal
    #75
    Thanks. Please see my notes in the attached diagrams. Hopefully they are readable. Essentially, I'm wondering if pin 24 brings wifi power and did you separate power between bluetooth and wifi by cutting the noted trace?

    Or are they not really connected?
     

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