And please enable downgrading apps in the Installations menu in XInstaller.
Now you will have working Google Search.
Download this version of TvSettings from aftv2atv. Now do these commands to install it.
adb push TvSettings.apk /sdcard/ adb shell su mount -o rw,remount /system rm /system/priv-app/TvSettings/TvSettings.apk mkdir /system/priv-app/TvSettings chmod 755 /system/priv-app/TvSettings chown root:root /system/priv-app/TvSettings mv /sdcard/TvSettings.apk /system/priv-app/TvSettings/ cd /system/priv-app/TvSettings/ chown root:root TvSettings.apk
Download Leanback Launcher and rename it to TvLauncher.apk
Now do these commands.
adb shell su mount -o rw,remount /system mkdir /system/priv-app/TvLauncher chmod 755 /system/priv-app/TvLauncher chown root:root /system/priv-app/TvLauncher mv /sdcard/TvLauncher.apk /system/priv-app/TvLauncher/ cd /system/priv-app/TvLauncher/ chown root:root TvLauncher.apk
It might crash on launch, if it does, go into settings, go to apps, select Play Store from System Applications, and clear data. You'll do this every time it crashes.
Now you have the full Play Store!
If you read this through and followed the steps, you should have all of these fully working.
Enjoy your Googlified Fire Stick 2!