APKMirror is one of the most popular websites for downloading old versions of Android apps. Here's how to download Jiosaavn old version 6.5 using APKMirror:
Before installing the APK file, make sure to allow installation of apps from unknown sources on your device. Here's how: Jiosaavn Old Version 6.5 Download
You can find the specific on several reputable third-party archives that maintain version histories: APKMirror is one of the most popular websites