How do I get AirDrop and Handoff on older Mac

With the release of the official version OS X Yosemite Some users of the "old" Mac computers were left without the support of very cool features: Handoff and AirDrop, which allow to begin work on one device and continue on another, as well as transfer files from iOS on the Mac. Out of business left and users are still quite "young" laptops an MBA in 2011 and a tiny Mac Mini is also produced in 2011. However, with the help of magic, tambourine and such a mother, carefully performed all the steps below, you will be able to return "lost" opportunity.

So, to begin with a word of caution - all that you do, you do at your own risk, so if something is not sure, it is better not to start at all! Let's start:

• Follow the link and download the utility in the Programs folder from the page 0xED http://www.suavetech.com/0xed/
• Download and install in the Programs folder KextDrop utility site http://www.cindori.org/software/kextdrop/
• Open the Terminal and enter the following line there:

sudo nvram boot-args = "kext-dev-mode = 1"

• Then restart your Mac.
• After rebooting, open Finder and navigate to the folder / System / Library / Extensions / (System / Library / Extensions)
  
  

  To navigate to the appropriate folder, run the Finder, click Cmd + Shift + G and copy the path in the opened window

  
  In the folder Extensions locate the two files:
  - IO80211Family.kext
  - IOBluetoothFamily.kext
  
  
• Back them up on your desktop (this is important!), And delete the originals.
• Launch Terminal and type the following command (it is best to copy the line, not to miss the extra spaces):

ioreg -l | grep "board-id" | awk -F " '{print $ 4}'

• The results appear, select and copy to clipboard. Line should look something like "Mac-742912EFDBEE19B3" (without quotes). Do not close the terminal.
  
• Open Finder and navigate to: ~ / Desktop / IO80211Family.kext / Contents / Plugins / AirPortBrcm4360.kext / Contents / MacOS
• In the opened folder, you will see the file "AirPortBrcm4360”. Click the right mouse button and select "Open with" - "Choose Program" - 0xED.
  
• In the application, press the combination of Cmd + F to search and enter "Mac-" (without quotes). Make sure that the search is done on the text, not the HEX.
• The found text will replace the letters and numbers kits (after "Mac-") with the result of the Terminal for each value of "Mac-" (remember that it is still open?).
  
• Save the result of this operation by pressing the red button in the editor (Save).
• Re-open Finder and navigate to: ~ / Desktop / IOBluetoothFamily.kext / Contents / MacOS (Cmd + Shift + G).
• In this folder, open the file IOBluetoothFamily through 0xED (As it was done previously for the file "AirPortBrcm4360”).
• In the editor window again press combination Cmd + F to search and enter "MacBookAir"(Yes, that's right).
• Among the found results we are interested in the line:
  'MacBookAir4,1''MacBookAir4,2''Macmini5,1''Macmini5,2''Macmini5,3' .
  Find her.
  
• Manually change the values ​​in this line to:
  'MacBookAir1,1''MacBookAir1,1''Macmini1,1''Macmini1,1''Macmini1,1' .
  Be careful and do not miss any value!
• Click the red Save button to save the results.
• Open the downloaded application KextDrop.
• We need to re-install the system in our modified files IO80211Family.kext and IOBluetoothFamily.kext. For this first program to overtighten the first window, and then the second file, confirming the installation by clicking "Install" button.
  
• We turn back to the Terminal and type the command in turn:
  

sudo kextcache -system-prelinked-kernel

sudo kextcache -system-caches

nvram -p

Do not enter commands at once, do it at a time, waiting for completion of processing of one, only then enter a second!

• After the process, the teams restart your Mac.
• After restarting the computer, connect to the Internet.
• Open the System settings and go to the menu Are common.
• Put a check mark in the menu option "Allow Handoff between this Mac and your iCloud devices”.
  
• return to System settings, Navigate to the item iCloud and click "Exit" button.
• Open on all your iOS-device applications settings. Navigate to iCloud and will exit.
• Restart your Mac and all iOS-devices.
• I login to iCloud on your Mac and iOS.

If the above operations after done something went wrong or the emerging opportunities failures occur, make sure that:
- Your Mac and iOS-devices are connected to the same wireless network;
- Option "Keychain Access" is enabled on all your devaysakh;
- all devices are charged more than 25%.

If does not work absolutely nothing, then you have done something wrong. With KextDrop set in the original files (back them up we did in the fifth paragraph), then try to do all the steps again.

Thus, it would seem difficult and long text, I tried to describe maximized all stages. If your Mac does not support Handoff and AirDrop, and to buy new hardware not want to try to take advantage of this instruction, it will help you.

(via)