You cannot mod without SMAPI. For version 1.5.6.39, you need (or the last 3.18.x build). Do not use SMAPI 4.0 or higher, as those are built for Stardew 1.6.
Once you see the black SMAPI console window, you are ready. stardew valley 1.5.6.39 mod
You downloaded the wrong version. Go to the "Old Files" tab on Nexus. Search for files tagged 1.5.6 or SDV 1.5 . You cannot mod without SMAPI
Essential for those who want to skip the grind. These tools let you warp anywhere, instantly grow crops, or spawn any item in the game. Once you see the black SMAPI console window, you are ready
To mod version 1.5.6.39, you must use the mobile-specific version of the Stardew Modding API (SMAPI) SMAPI Android Launcher : A specialized APK (often found on ZaneYork's GitHub ) that acts as the entry point for your modded game. File Manager
When a game updates, it often breaks mods. Script changes, file path alterations, and new code can render a complex mod unusable until the modder updates it. For a massive overhaul mod like Stardew Valley Expanded , this update process can take months. Consequently, the ecosystem became the "Gold Standard" for a long time. It was the version where almost every major mod was fully functional, stable, and optimized.