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Google's next-gen reCAPTCHA system could spell trouble for de-Googled phones
(www.androidauthority.com)
This is a most excellent place for technology news and articles.
My thinking is Android refuses to install things of a lower version number generally so if play services was higher it might refuse updates.
Doesn't solve the likely needing root to patch it of course and if you have that you might as well just replace it with Micro G or similar.