Earlier everyone was thinking that the Funtouch OS 10 beta update would come by June 2020 for Vivo S1 and S1 Pro, but the company has released the Android 10 based FuntouchOS 1o beta update for both the devices before the expected date. The update is currently being rolled out in China in a phased manner. The OTA update brings software version 6.10.0 and is around 3.68GB in size. We highly recommend users to use stable Wi-Fi connection while downloading and installing the new update
Manual update guide
Now, there is no download link available at this time. So, all the interested users may have to wait for the OTA update notice. Additionally, users can manually check for the OTA update by going to Settings>System update to check for the new version Source
