Hey Jack,
Downloading service bridge shouldn't launch a separate application but rather detect details about your laptop like which model device you have, its serial number, warranty information, and more.
To help, here's a link to the driver page for your model Yoga should you have the same device that is featured on the product page this question is tied to: https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/yoga-series/yoga-7-2-in-1-16ahp9/83dm/83dm0003us/downloads
From here you can give service bridge another try with automatic updates or you can check for updates manually.
1 month, 1 week ago
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Lenovo Product Expert