Repeat the install process for the Google Apps zip. This gives you the Play Store and Gmail. Reboot: The first boot can take up to 10 minutes. Why Move from 4.4.2 to 7.0?
Select "Wipe" > "Advanced Wipe." Check Dalvik/ART Cache, System, Data, and Cache. Do not wipe Internal Storage if your ROM is saved there. android 442 update to 70 verified
Android 7.0 introduced native multi-window support, perfect for older tablets. Repeat the install process for the Google Apps zip
Check your model number (e.g., SM-G900F). Installing software for the wrong sub-model will cause permanent damage. Phase 2: The Three Pillars of the Upgrade android 442 update to 70 verified