Perform a typical bootcamp installation. Then, during install process, press Shift+F10, type regedit and add the following key:

HKEY_LOCAL_MACHINE\SYSTEM\Setup\LabConfig

Then create two 32bit DWORDs:

BypassTPMCheck 1
BypassRAMCheck 1
BypassSecureBootCheck 1

Update: Bootcamp doesn't seem to want to install such iso after reboot - Windows Installer shows a 0x80070070 error on the Copying Files phase.

Longer way

  1. Download Windows 10 and Windows 11 iso images.
  2. Create a new Win11 directory, and paste there contents of the mounted Windows 10 iso file, except the sources/install.wim file.
  3. From the mounted Windows 11 iso, copy sources/install.wim somewhere on the desktop.
  4. Install brew install wimlib.
  5. Split install.wim into two files, using wimlib-imagex split install.wim install.swm 3500
  6. Save these new install.swm and install2.swm into sources dir of our Win11 directory.
  7. Open disk utility, File -> New Image -> Image from Directory, select our Win11 directory, select DVD/CD master Image format. This creates a .cdr file.
  8. Convert cdr to iso, by executing hdiutil makehybrid -iso -joliet -o Win11.iso Win11.cdr
  9. Now use this iso in a normal bootcamp installation.
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