Can't update to Monterrey - Reboots at installer

So after I downloaded the update and started the installation process, I've noticed a new boot partition at the OC menu called Macintosh HD, that would continue to the Monterrey installer.

In fact, what happens is that before it ever reaches that screen, it throws an error called MSU 1013 (I'm not sure if that's similar to MSU 1130) an then instantly reboot.

However, I can still boot at Big Sur and use it normally, at the 11.6.1 version.

I'm using a Haswell configuration OC folder and config.plist and iMacPro 1,1 SMBIOS, both supporting Monterrey.

How can I solve this issue?

submitted by /u/droidshatt
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