Install Google Play on Amazon Fire 5th Generation, FireOS v5.3.6.4

GooglePlay-on-AmazonFire.bat

:: Amazon Fire 5th Generation, FireOS v5.3.6.4
:: 
:: Amazon Kindle Fire details | https://www.rootjunky.com/amazon/amazon-kindle-fire/
:: Install Google Play on Amazon Fire Instructions | https://www.howtogeek.com/232726/how-to-install-the-google-play-store-on-your-amazon-fire-tablet/
:: RootJunky Files | http://rootjunkysdl.com/files/
:: 
:: -Amazon Fire-
:: - Settings > 'Device Options' > press 'Serial Number' ~7 times
::   * 'Developer Options' > 'Enable ADB'
:: 
:: -Windows-
:: - Install Android SDK, 'choco install android-sdk'
::  * Android Studio > Configure > 'SDK Manager' >> Click 'SDK Tools' tab > CHECK 'Android SDK Platform-Tools' + 'Google USB Driver' > Apply
::
:: - Open web browser | http://rootjunkysdl.com/files/?dir=Amazon%20Fire%205th%20gen
::  * Download 'Amazon-Fire-5th-Gen-Install-Play-Store.zip'
::
:: - Extract 'Amazon-Fire-5th-Gen-Install-Play-Store.zip'
::

set AndroidSDKPlatformToolsDir = "C:\Android\android-sdk\platform-tools"
set RootJunkyPlayStoreDir = "H:\downloads4TB\Amazon-Fire-5th-Gen-Install-Play-Store"


echo CONNECT YOUR AMAZON FIRE TO YOUR COMPUTER VIA USB

c:
cd %AndroidSDKPlatformToolsDir%
adb devices

echo On your Amazon Fire, authorize the computer
PAUSE

h:
cd %RootJunkyPlayStoreDir%
c:adb devices

echo Installing Google Play store and removed ads from lock screen
c:adb install com.google.android.gms-6.6.03_(1681564-036)-6603036-minAPI9.apk
c:adb install GoogleLoginService.apk
c:adb install GoogleServicesFramework.apk
c:adb shell pm grant com.google.android.gms android.permission.INTERACT_ACROSS_USERS
c:adb install com.android.vending-5.9.12-80391200-minAPI9.apk
c:adb shell pm hide com.amazon.kindle.kso

echo blocking OTA updates from Amazon
c:adb shell pm hide com.amazon.otaverifier
c:adb shell pm hide com.amazon.device.software.ota
c:adb shell pm hide com.amazon.settings.systemupdates

echo REBOOT YOUR DEVICE NOW.

Don't understand this page what it telling me