Once you’ve installed all four apps, it’s time to restart your Fire tablet. Press the power button until the power menu appears, then press To restart.
4. Log in to your Google account
Once your Fire tablet has restarted, you should be able to open the Google Play Store, sign in to your Google Account, and start downloading apps. Again, not everything works, but there’s definitely a bigger selection than what you get in Amazon’s Appstore.
Advice and troubleshooting
If you want a more stock Android experience, you can install a custom launcher, which will allow you to hide any Amazon apps you don’t need. I like Nova Launcher, but there are many more available.
Assuming you’re done installing APKs from unknown sources, it’s a good idea to go back and disable this option. It’s in Settings > Security and privacy. Disable button Applications from unknown sources option. This will prevent you from accidentally downloading malware.
If you are having trouble installing apps from the Play Store, try clearing the app data. Head to Settings > Apps and Notifications > Manage all apps. Go through this list and find the Play Store. Press to change settings. The first step is to press Force stop to close the Play Store. Then press Storagethen Erase data (Where Clear Storage, depending on the version of Fire OS you are running). Once done, restart your device and try logging into the Play Store again.
If that doesn’t work, you might want to punt: factory reset and start over. However, be aware that a factory reset will erase all your data and files, not just the Google Play Store, so make sure you have a good backup before trying.
Finally, for those who would like to try installing LineageOS, the open source alternative to Android: I do not recommend it. Fire devices don’t have unlockable bootloaders, and installing LineageOS isn’t for the faint-hearted. Even if you remove it, things rarely work 100% of the time, and you can still mess things up after installation. I bricked an old Fire HD 8 running LineageOS (tried updating the bootloader in LineageOS, which turned out to be an error). There is also not, as far as I know, any version of LineageOS that fully supports Fire hardware. If you want to run LineageOS on a tablet, a Samsung Slate is probably your best bet.