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macOS High Sierra (10.13) Unsupported Macs Thread

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The first post of this thread is a WikiPost and can be edited by anyone with the appropiate permissions. Your edits will be public.
dosdude1,
To be absolutely clear, what should be deleted in the System EFI partition in the following screenshot?
Thanks.
Screen Shot 2018-06-01 at 6.00.13.png
 
dosdude1 said:
Yes, currently the APFS patch must be applied, as it removes the system compatibility check from the APFS preboot volume. I will be releasing a full patch soon that will perform all the modifications necessary. But for now, just do what others have done: Apply APFS patch even after the FW update, then just delete the EFI boot files in your EFI System Partition to get rid of the old boot method. Or, you can just set your startup disk to the APFS volume in System Preferences.
Click to expand...
[doublepost=1527805039][/doublepost]Hi Dosdude
Just ran AFPS Rom update. Unfortunately I cannot boot my MacBook Pro 5.2 laptop. There is a black screen with white led light but laptop is dead. Is there a way to restore laptop?
 
Gunner12 said:
[doublepost=1527805039][/doublepost]
Hi Dosdude
Just ran AFPS Rom update. Unfortunately I cannot boot my MacBook Pro 5.2 laptop. There is a black screen with white led light but laptop is dead. Is there a way to restore laptop?
Click to expand...
Shut it off and try booting again. Normally that works after the initial update.
 
dosdude1 said:
Shut it off and try booting again. Normally that works after the initial update.
Click to expand...
Hi Dosdude1.
Thanks for your reply. I did that. Held the power button for a long time. Then tried a reboot but there is no life whatsoever. Just the led turns on and the fan is running but still dead. Not sure next step?
 
Try resetting SMC

Gunner12 said:
Hi Dosdude1.
Thanks for your reply. I did that. Held the power button for a long time. Then tried a reboot but there is no life whatsoever. Just the led turns on and the fan is running but still dead. Not sure next step?
Click to expand...
 
Gunner12 said:
Hi Neckton1.
Tried SMC reset (control/option/cmd & power switch) but fid not to work. Laptop not responding but the led light is still on. Thanks but seems I’ve bricked the laptop.
Click to expand...
It's Control + Option + Shift + Power.
 
dosdude1 said:
It's Control + Option + Shift + Power.
Click to expand...
Hi Dosdude1.
Correct. I realised I made mistake in earlier post and used Control +Option+ Shift & power key. Did not work as it seems keyboard is disabled. Not sure how to restore ROM. Any suggestions?
 
Gunner12 said:
Hi Dosdude1.
Correct. I realised I made mistake in earlier post and used Control +Option+ Shift & power key. Did not work as it seems keyboard is disabled. Not sure how to restore ROM. Any suggestions?
Click to expand...
Hold power until the LED on the front turns off. Turn it back on again, and see if it boots.
 
dosdude1 said:
Hold power until the LED on the front turns off. Turn it back on again, and see if it boots.
Click to expand...
Hi Dosdude1. I’ve tried that a few times. Does not boot. The fans start up and it tries to start the hard drive. But nothing else. The keyboard is disabled, no chimes, USBs don’t work & screen dead. Thanks
 
Gunner12 said:
Hi Dosdude1. I’ve tried that a few times. Does not boot. The fans start up and it tries to start the hard drive. But nothing else. The keyboard is disabled, no chimes, USBs don’t work & screen dead. Thanks
Click to expand...
I guess something went wrong during the flashing process somehow... The only solution at this point is to desolder your system's SPI-ROM, and use an external EEPROM programmer to re-program the system ROM with the contents of the backup saved by the program.
 
dosdude1 said:
I guess something went wrong during the flashing process somehow... The only solution at this point is to desolder your system's SPI-ROM, and use an external EEPROM programmer to re-program the system ROM with the contents of the backup saved by the program.
Click to expand...
Hi Dosdude1. Suppose need to get this done either by Apple Support or Third Party Repairer. Do I need to supply them with the backup saved during the process?
 
Gunner12 said:
Hi Dosdude1. Suppose need to get this done either by Apple Support or Third Party Repairer. Do I need to supply them with the backup saved during the process?
Click to expand...
If you're located in the US, you can ship the machine to me, and I can do it for you.
 
So, all of this stuff with Radeon cards is a little confusing. I have an Early 2009 24" iMac (9,1) with Radeon HD4850 currently running 10.13.3 and I've been worried about moving to 10.13.4 due to the video card compatibility problems many have had. It's hard to get a clear idea of whether upgrading will cause me to have issues or not.

What's the word, everyone? Will my video be glitchy if I upgrade?
 
zang said:
So, all of this stuff with Radeon cards is a little confusing. I have an Early 2009 24" iMac (9,1) with Radeon HD4850 currently running 10.13.3 and I've been worried about moving to 10.13.4 due to worries about video card compatibility. It's hard to get a clear idea of whether upgrading will cause me to have issues or not.

What's the word, everyone? Will my video be glitchy if I upgrade?
Click to expand...
I'm not 100% sure... Did you have to run the AMD video card patch initially? If so, all you need to do is re-apply that after updating. If not, you shouldn't have any issues.
 
Last edited:
Just attempted to install 13.5 update (iMac 9,1 running 13.4) through the app store and on restart the update got just past half-way and then this error:

fullsizeoutput_52.jpeg


And my system now incorrectly says it's on 13.5 and no update available in app store.
 
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