While the technical process of replacing the documents.archive file is functionally possible on Android devices, the practical application of "downloading and installing full save data" for Last Day on Earth is largely obsolete due to cloud synchronization protocols and highly risky.

Go to the in-game settings on your new device and tap . Submit a ticket under Account > Lost Progress .

You will see a file named files or savedata.dat . Delete the original one. Now, copy the downloaded save file you obtained. Paste it into the files folder. Ensure the name matches exactly what the game expects (usually savedata.dat or user_data.bin ).