Out-of-warranty Lenovo MTR Reimage - can't upgrade to Windows 11

Hello everyone.

Got a couple of Lenovo MTR NUCs that we needed to reimage. Cause they are out of warranty, Lenovo only provides the image that it was shipped with for reimage (I can't use Cloud Deploy). The problem is, when trying to run the Windows 11 update, I get the error code "0x0000400". This is because these come with the Windows 10 IoT Enterprise edition, which is known to have this problem. The issue is that I can't use the ISO file or load the Windows 11 image, as this will get rid of the MTR system.

Does anyone know a way around this/is there an image available? Thanks!