Hi all,
Lenovo Vantage managed to detect, download and install a bunch of updates when I first got my Legion Pro 5i (16IRX8) laptop in May. Since then, Vantage hasn't offered a single update, despite new ones being made available for manual download from pcsupport.lenovo.com. So, I've been downloading and installing new updates from there manually.
Recently, I found out that Lenovo Service Bridge, the updater software that's apparently used by both Vantage and the "Scan system for updates" feature on pcsupport.lenovo.com, is unfortunately using TCP ports reserved by Microsoft Hyper-V. I fixed this guided by these helpful hints posted by "oahrens": https://forums.lenovo.com/t5/Pre-Installed-Lenovo-Software-and-Applications/Lenovo-Service-Bridge-Failed-to-listen-ports-50128-50129-50130/m-p/3888120?page=5#5183569
Since that fix, LSB.exe is running in the background as it should, the "scan for updates" thing on Lenovo's site seems to be working, and so does the system update page in Vantage; the progress bar goes from 0 to 100, yet no available updates are found. Currently, there's an update to the Intel Management Engine Interface Driver (2345.5.3.0, from November 1) available on the manual downloads page.
Does Vantage and the automatic update scan on pcsupport.lenovo.com actually work for anybody else? Do you have Hyper-V installed? Are you offered the IME interface driver update?