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Macbook Air locked out after multiple attempts of wrong pin (icloud)

47197 Views 11 Replies 11 Participants Last post by  Cesarina35
Hello all,

I was playing a prank on my wife and decided to lock her out of the laptop via iCloud. She went crazy trying different pin numbers. Now all I see is a 60 minute timer and when that expires I can NOT type the pin, the boxes dont even show up.

Message on screen is "Your computer is disabled. Try again in 60 minutes"
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let us know if the dog house is comfy.
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Well try this ;

Do some kind of Internet Recovery by starting iMac with Cmd-Alt-R. Then you may face lock screen (EFI pin lock) and enter your iCloud pin there. After that recovery process should begin and then your iMac should be booting normally.
 

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Discussion Starter · #5 ·
Quote:
Originally Posted by KyleMart06 View Post

Try this out and see what happens:

http://apple.stackexchange.com/questions/132478/macbook-pro-locked-with-find-my-mac-and-wont-let-me-boot

Looks like if you do a parameter ram reset it may help?? PRAM reset is hold CMD+Alt+P+R for two boot chimes and let it boot. Let us know if you figure it out.
Quote:
Originally Posted by Vembutech View Post

Well try this ;

Do some kind of Internet Recovery by starting iMac with Cmd-Alt-R. Then you may face lock screen (EFI pin lock) and enter your iCloud pin there. After that recovery process should begin and then your iMac should be booting normally.
I forgot I made a thread here, necro update for anyone with same question in the future.

This is a feature on all recent apple devices that APPLE has to fix for you, mandatory visit to the store with receipt for device to prove ownership, lost it? well GL with that. Luckily I keep boxes of the stuff I buy and the receipt was there. I did not buy the laptop in the apple store, worstbuy(bestbuy) and I think I could of gotten the recipt from my worstbuy credit card account.

Hopefully this makes it into the google results because I did not find anything about this.
 

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Interesting! Kind of wondered what would happen myself.. Luckily I resisted the temptation.
Thanks for sharing your experience.
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I stumbled over this message when I was searching as I had the same problem:

1. My MacBook Air was lost/stolen and I locked it with a pin from my iPad.

2. After more than a week I got the message that the MacBook was locked. Unfortunately you get not information on where the Mac has been online.

3. After another week the MacBook showed up, someone returned it.

4. I tried to unlock and got the message "This Mac has been locked, Try again in 60, 59, 58 minutes". After this I got the message "Wring Passcode. Try again".

5. But, there is no field to type in the passcode.

6. Finally the solution was: Open findmyiphone on the iPad. select the MacBook. It says "locked... will play sound when online". On the right hand corner of the screen, there is a command to click on "remove". Hitting this the Mac is removed from the list and removed from the "lost"-status. Immediately after this the fields for entering the passcode showed up on the Mac. I assume it is also important, that your found mac is on a location where it remembers the net code to go online. Its hidden, there is no sign that the mac went online.

7. after entering the right passcode the mac reboots and looks like has never been away or abused...

8. I also asked apple-support. they send me an information, but the steps described there lead to the same solution but the screen and commands there where different. So maybe an old version of the helpfile.

Hope this helps fellow users. Robert.
 

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Quote:
Originally Posted by Vembutech View Post

Well try this ;

Do some kind of Internet Recovery by starting iMac with Cmd-Alt-R. Then you may face lock screen (EFI pin lock) and enter your iCloud pin there. After that recovery process should begin and then your iMac should be booting normally.
For me this works, BUT I needed to be logged in on icloud.com/find using different computer at the same time in case to see the fields to enter the PIN.
As long as I wasn't logged in on icloud.com/find using a different computer at the same time, I was not able to view the field to enter the code.
 

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So it got resolved?

Well either way less learned.
 

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Another way to clear the 60 minute countdown loop

If you have the firmware code, there is a way to clear this non-functional "Your Computer is Disabled" count down screen. Either take your laptop and proof of purchase to an Apple store, turn off the firmware password via iCloud, or try the following:

I will attempt here to create a Step by Step. You will need two USB sticks.

1] On one stick create a mac OS installer using DiskMaker X (I tried it first with a High Sierra version and it did not work. Then I tried an older one I had with El Capitan and it worked) You will need to google DiskMaker X and learn how to make this needed USB stick. If you can't get El Capitan try it with a newer OS ... maybe I made a mistake the first time in all the steps. (edit - after i succeeded I tried using the High Sierra USB stick again and I was able to get all the way to the utilities in the basic installer window, so give High Sierra a try as it will be easier to get a copy of the High Sierra installer to make the DiskMaker usb stick).

2] (I did this part on my windows machine) On the second USB stick you create a bootable USB with the rEFInd . At this web site http://www.rodsbooks.com/refind/getting.html download the "A CD-R image file", not the USB version. This is an ISO file. Next you need a USB maker, I used Universal-USB-Installer-1.9.7.7.exe which I downloaded from Cnet Downloads. Run the USB installer, at the main window for Step 1 there is a drop down menu with lots of Linux choices, scroll to the bottom and choose "Try unlisted Linux ISO". (see misc screen shots below) In Step 2 point to your fEFInd iso file. Then select your USB drive and click Create. During the process the installer said it failed and would not be bootable, but I finished it anyway and the USB fEFInd stick worked.

3] Go back to your Mac, plug in both USB sticks and boot holding the Option key down. Enter your firmware code at the lock screen. Then select the EFI boot USB stick and boot to that. Then using the arrow keys select the mac OS USB installer that you made. (see misc screen shots below) Once that is highlighted, hit the F2 key. This will give you another boot options menu. Select "Boot macos in Singer User Mode". Your mac will start booting to a terminal or command line window. Wait until it has finished and you are at a command prompt. Then type in this succession of commands:
nvram -c
nvram -xp
nvram -c
nvram -c
nvram -c
nvram -c
nvram -xp
Yes you need to clear the nvram several times in a row, and include the -xp versions too just as shown above.
Then type in exit and wait. The laptop should continue booting in that command window until it switches over to the GUI window and you end up at the general OS Installer window. The installer window for El Capitan has a utilities section and the Firmware Utility is included. The utility is called Software Security Utility in High Sierra. I opened the Firmware Utility and turned off the firmware authentication using the code ... [at this point I was totally psyched because I had been working on this for several days, including multiple calls to Apple where they told me I had to come in with my proof of purchase which I did not have anymore (2015 mac passed end of warranty) (keep your receipts!) if I wanted them to clear this issue].

I then used disk utility to wipe the hard disk and reinstall. I don't know what would have happened if I had simply rebooted at that point after turning off the firmware authentication. I assume I could have booted into my old setup.

Good luck MTFBWY
rws70



https://www.ghostlyhaks.com/forum/macbook/555-can-t-unlock-macbook-pro-13-retina-disabled
 

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