The image upload only matters if you need to have some custom steps on it prior NTLite.Do you want the image (i.e. ISO) with all the updates are applied, the older ones erased, and the registry keys applied, done all in NTLite?
I remembered that you want me to not use MSMG Toolkit.
Then I shall, but PM me to tell me how to upload a big file like the ISO.
OK, thank you.
No limitations, IF Windows is still fully functional.
However, we can also switch to an official image, as it seems like uploading an ISO is not a trivial task for you.
Then you just let me know the Windows version, preset, REGs if used, and what to look for to confirm the issue.
Make sure to actually retry it, on an official Windows image of your choice.