Help! Issues regarding game data transfer to non-rooted phones

[mimilu]

I recently planned to transfer my game data to a non-rooted phone (so that both my old and new phones can use the same account). However, when I tried using Helium backup, it showed that the backup was not allowed.

Is there any way to transfer my game data to a non-rooted phone? For example, modifying the APK to allow backup. (How?)

Game:城とドラゴン (Using the official transfer method will make the old phone unable to run the original account).

 

[TRYOFF]

not all games uses data folder to store your data (Account details, in game data) so maybe they use a cloud server to store your data, use http tool kit to check if this game uses cloud server and check how it works, maybe they use your android id or your hardware id as an authentication system, if they do then simply get your android id or hwid hash from your old phone and spoof it in your new phone.

 

[mimilu]

not all games uses data folder to store your data (Account details, in game data) so maybe they use a cloud server to store your data, use http tool kit to check if this game uses cloud server and check how it works, maybe they use your android id or your hardware id as an authentication system, if they do then simply get your android id or hwid hash from your old phone and spoof it in your new phone.

I have obtained the .ab file from an Android device with a lower version number, but adb backup restore is no longer available after Android 11. Is there any other way to restore this .ab data on a new unrooted phone?