1️⃣ Visit https://summertimesagamods.pro/summertime-saga-old-versions/ and select your desired old version.
2️⃣ Click the download button and wait for the APK file to be saved on your device.
3️⃣ Enable “Unknown Sources” in your device settings to allow third-party installations.
4️⃣ Open the downloaded APK file and tap Install.