You can use system info tools like Speccy or CPU-Z to identify the manufacturer and current firmware version.
: As noted, adding Google services where they weren't natively supported. Critical Considerations leehee express lehf202a gms 43p294mb patched
In the world of patched firmware, refers to the suite of Google applications (Play Store, Maps, YouTube) and the underlying APIs that allow these apps to function. You can use system info tools like Speccy