why my kindle hdx apps won’t update?
Apps on Kindle Fire is different from iTune appstores or Google Play. The Amazon Appstore is updated the latest if Normally, and it may take a week or even longer for the app to get updated. So probably you get to wait, if the app on Amazon isn’t updated yet.
When an app update is available, you will get a notification at the top of the screen. If you want to check manually, go to Apps, click on Store, click the menu button at the bottom of the screen, and select My Apps. The Update Available tab shows any available updates, or go to apps click on store Then click on the menu button and go to app updates.
In that case search for the app store and make sure it shows the new version you expect it has. If it does not, then you have to wait for the Amazon app store to receive the new version. If it does show the new version you should be able to do an Update right from the app page. If for some reason you still can’t update, but do see the new version, then uninstall and re-install the app to get the latest version.