A1466 MacOS Issue

[Instafixx]

Hello,
This Macbook came in today where in the customer had forgotten the password, there is an issue with the keyboard with certain keys not working and the trackpad not working at all.

Swapped the trackpad and went into receovery. Erased the Disk and went ahead with the Reinstall MacOS option.

But some issue cropped up.
It got shut down once.
It showed some Untrust Cert error. Used the terminal to set the date.
and now its showing this error. (attached)

The board is clean with no corrosion. There was dust which i have cleaned.

[rediii]

Re: A1466 MacOS Issue

try to install it from a usb stick (gibMacOS - github)

[Instafixx]

Re: A1466 MacOS Issue

try to install it from a usb stick (gibMacOS - github)

Its not happening. I am pressing the alt key but its not giving me the option to boot from the usb stick.

[reformatt]

Re: A1466 MacOS Issue

Recovery tries to download whatever it came with. I don't think Apple offer Sierra anymore hence your error. If you've wiped the drive, then it should boot off a stick once you insert it (well it does that on recent firmware at least). If you have a sus keyboard, a PC keyboard via USB (ALT key should work for the bootpicker).

You don't mention what version of A1466 it is as this will limit what version of MAC OS it will support. 2012 is Catalina, 2013/14 Big Sur, 2015/17 Monterey. On another MAC (with recentish MACOS version), you can use the softwareupdate command via terminal to download the version of MACOS you need. Make sure you used the right trackpad too as the 2012 one is not compatible with 2013 etc.

Examples:

softwareupdate --list
softwareupdate --fetchfullinstaller --full-installer-version 12.6.2

Then create your installer in the usual way with the createinstallmedia package.

https://support.apple.com/en-au/HT201372

[reformatt]

Re: A1466 MacOS Issue

Edit, correct syntax is

software update —fetch-full-installer —full-installer-version x.x.x

Replace x.x.x with Mac version from —list. 11.7.1 for Big Sur, 12.6.2 for Monterey

[Instafixx]

Re: A1466 MacOS Issue

Edit, correct syntax is

software update —fetch-full-installer —full-installer-version x.x.x

Replace x.x.x with Mac version from —list. 11.7.1 for Big Sur, 12.6.2 for Monterey

The terminal thing didnt work.
My bootable disk is showing in Disk Utility but its not booting from the disk sadly. I tried with a different keyboard. Even tried using the option via Recovery Mode to change the Startup Disk. Didnt work.

[reformatt]

Re: A1466 MacOS Issue

That’s run from within MAC OS on another machine to download the installer to create your bootable USB. You can’t use it in recovery mode as the softwareupdate command is only in MAC OS. There no space in softwareupdate in my previous post (iPad auto inserted it).

If you cant get to the bootpicker with option key, then check startup security in recovery mode. If it has a password, maybe easiest to reflash u6100. Another possible option is use target disk mode from another Mac. I’ll have to try that and see if it works.