The necessity of manually updating the Play Store on Android 4.2.2 arises from the limitations of the system itself. As Google phases out support for older Android versions, the pre-installed Play Store versions on these devices often cease to function correctly or crash upon opening. Furthermore, many essential apps (like WhatsApp or banking apps) require a minimum version of the Play Store to authenticate downloads or process in-app purchases. Relying on the automatic update feature is often futile on such old firmware, as the native client may be too outdated to handshake with Google’s current servers. Consequently, the user is forced to intervene manually via an APK (Android Package Kit).
You cannot update Android 4.2.2 to a higher OS (like Android 5.0 or 6.0) just by installing a Play Store APK. This guide only updates the store app itself. descargar google play store apk para android 4.2.2 update
How To Manually Update Google Play Store On Android - Fastest Guide The necessity of manually updating the Play Store