Instead of a modded version, you can access a huge library of customizable templates for free through the official PosterMyWall app on Google Play or their web platform. Google Play Comparison: Free vs. Official Premium Features

Download free PSD poster templates from sites like Freepik and edit them using GIMP (a free, open-source Photoshop alternative). No mods, no malware, 100% legal.

Modded files are frequently used to inject Trojans, ransomware, or keyloggers into mobile devices.