@David Henriquez, Thanks for posting in Q&A. From your description, I know the Autopilot enrollment is failed due to IME failed to download. But when you manually download it, it can be downloaded and installed. It only affects Mele machines but working on Lenovo machines. Could you confirm if the status value is 30 under the registry key you check?
Meanwhile, for the affected device, if we install with the same OS version and updates as the Lenovo device, and then do Autopilot, will it work?
if it is still not working, I think we need to capture network trace log, Procmon log to look into the issue. I suggest open case to do analysis.
https://learn.microsoft.com/en-us/mem/get-support
Hope the above information can help.
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