Late 2014 iMac Big Sur install worked. Monterey failed. Request for next steps.

[davidfavor]

I have a 2x patched installer USB Installers.

Big Sur install worked.

Monterey fails with circle + slash with message "support.apple.com/mac/startup".

Wondering if anyone can provide me with step(s) to get Monterey installed on this hardware.

Also, maybe installing Monterey is impossible, so if this is true, someone let me know too.

Many thanks!

[harrykl]

on Mid 2011 Macbook Monterey fails. Big Sur works fine. I tried to patch the USB stick mentioned here #228
But it failed see #240

[ninevcat]

on Late 2012 Mac mini Monterey fails. Big Sur works fine.

[davidfavor]

I currently have Big Sur installed + then attempting to install Monterey produces the same problem.

Which is - circle + slash with message "support.apple.com/mac/startup".

Be great if someone can mention if a Monterey upgrade is expected to work on Late 2014 iMac.

Thanks!

[mccoytest-spurious]

https://support.apple.com/en-us/HT212551