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Model A1418 / Late 2013 / 2.7 & 2.9 GHz Core i5 or 3.1 GHz Core i7 Processor

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What version of ASD software works for late 2013 iMac 21.5"?

Hello all,

Can anyone verify what version of ASD works on an iMac 21.5” , A1418, late 2013?

I downloaded and tried ASD 3S155, but got the circle with line through it on initial boot up.

Managed to find a couple of updated lists, but no real indication to the one to use on the intended machine.

Any help is appreciated. Many thanks in advance.

Answer this question I have this problem too

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Sadly Apple scrubs the net for ASD images. Often times their muscle is enough to get it pulled. Frankly, I have found it really doesn’t offer that much benefit as unless you can decipher the code it won’t lead you to an answer.

If you are facing a problem how about giving us the details of the problem I’m sure we can aim you to the solution faster then you continue to hunt for the exclusive beast.

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Hello Dan

Thanks for your reply.

This seems to happen a lot , I ask a question……and then I find the answer.

The ASD 3S157 is for the Late 2013 iMac 21.5”.

I managed to find and download the ASD EFI part and run a quick test.

Onscreen there were only 2 sensor error mesages;

sensor - temperature — (TL0p) LCD proximity (test 1) sensor verifies that sensor reads within the sensor limits. ERROR — senosr is reading below the low limit

sensor - temperature -- (TL1p) TCON local (test 1) sensor verifies that sensor reads within the sensor limits. ERROR - sensor is reading below the low limit

This relates to a couple of previous questions I’d asked on ifixit regarding the same machine. All resulting from originally opening a machine to change the HDD. With the LCD reconnected. Nothing appears on screen. However using a mini display port to HDMI cable. Plugged into an external TV, there’s a picture to work with.

iMac 2638 21.5" display not working after HDD changed

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1 Comment:

Ouch! Your display assembly or its power connector on it is damaged as the connector carries the signals to the logic board.

Sorry I didn't see your original posting.


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Bz8B1 will be eternally grateful.
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