The UPD in the file name stands for "updated," but it also stands for Protect your data. Uninstall the mod and subscribe officially, or enjoy the free tier with a clear conscience. Have you tried the v860830 mod? Let us know in the comments below. If you experienced issues or malware, share your story to warn others.
If you choose to proceed, here is the generic installation process: spotify v860830 modapk upd
While the mod works for a few weeks or months, the security trade-off is too steep. You are handing over your device’s security to anonymous hackers for a service that costs roughly $0.36 per day. The UPD in the file name stands for