How to update Google Play Services to 9.8.7

Question

I am trying to implement firebase in android project but always getting:
Google Play services out of date. Requires 9877000 but found 9

Answer 1

A possible walkthrough would be to downgrade the emulator's API version (e.g. from 23 to 20) by creating a new emulator (Tools -> Android -> AVD Manager -> Create New Virtual Device. On the second screen, select your prefered (e.g. 20) API version.