CPH1871PU_11.F.11_undefined Update Details
OPPO Find X is receiving the Color OS 7 with a build version number CPH1871PU_11.F.11_undefined. The airborne update is around 3272MB in size (Full Firmware). Just like any other update, the current update is being rolled out in a phased manner. You can manually check for the update from your device’ setting. If the update is not yet available on your device, just wait for few days. This is an important security update and currently being rolled out via OTA (over-the-air) in a phase-wise manner. This can take up to a few days for the update to be available all across the globe.
Changelog
[System] · Added the June 2020 Android security patch to enhance system security. · System sounds can now be captured when you make a screen recording. · Fixed an issue where the audio in WeChat voice chats would cut in and out when your phone was connected to your watch. · Added a folder to save compressed files in “File Manager”. [Apps] · Added the Mail app: Exchange accounts are supported so you can manage all of your email accounts from one place.
Manual update guide
Source