Seems like some weirdness going on with our CDN which is case sensitive. The first link you listed is how we normally upload the file. I'm surprised all lowercase downloaded anything. We've tried to clear the CDN cache and republish the file. Please see if that first URL is working for you now.

It's pine season in North Carolina 😔

Thanks, will investigate. 👍

That particular model has a dependency on an Intel ME firmware update which we cannot distribute through the third party catalog. Unfortunately you may have to manually package and deploy the ME FW and BIOS updates to get past this situation.

The IdeaPad products are done by our consumer division & don't implement the enterprise features that our commercial products have. Not aware of way to manage BIOS settings at large scale for them. Driver updates may be available from Windows Update but these models have shorter support life

Only option is System Deployment Boot Mode when you boot pressing F12 to select booting to the network to start your deployment. In your task seq in WinPE you can then run a script to set the password. System is locked back down at first restart. See here: docs.lenovocdrt.com/ref/bios/sdbm/