You will have a "flat" version of the photo in your gallery. To view it as a 360 image again, you must follow the steps in Section 3 to re-inject its metadata. 2. Backing Up Your Own 360 Photos
Downloading a requires a two-step process: first, saving the image file to your device, and second, using a compatible viewer to experience the interactive 360-degree effect. When you download a 360 photo from Facebook, it typically saves as a "flat" equirectangular image (a long, distorted rectangle) because most standard device galleries cannot natively render the interactive 360 view . Step 1: Download the Photo File download facebook 360 photo
The "Download" button only appears for content you uploaded. For other users, that button is replaced with "Report Photo" or "Save Post." You will have a "flat" version of the photo in your gallery