I've also been a loyal Lenovo user for years. Guess what? I can download their System Update tool fine! No need to have some bullshit login for it! In the past I could always download HP's SmartStart CD's without a login. Why now all of a sudden is there a change?
Now you're probably just saying, why not buy a support contract? Well, I already have full hardware support from our aftermarket re-seller Curvature at a fraction of the cost of HP's support. I don't feel the need to pay extra for roughly the same level support. The only draw back, at least for HP, is that I can't get tools like SPP!
Well, I found a good Samaritan that is making the downloads for the SPP available for free! At the time of this writing the March and June 2018 versions of SPP are available here.
Hurry up and grab them before they are gone!