New update:
The updates seem to be rolling off for the Sony Smartphones. Previously we have covered that the Xperia XZ3 and Xperia XZ2 family (XZ2, XZ2 Compact, and XZ2 Premium) are getting new security patch update. And now, it is the company’s latest flagship, Xperia1 has started receiving its first and maiden firmware update. This update moves the build number from 55.0.A.2.205 to version 55.0.A.2.278, which in other words means you will be updated from the April 2019 Security patch to June 2019 Security patch.
It is very strange that Sony hasn’t released any official changelog for this update while we can see every other manufacturer providing a changelog that allows us to know more in detail about what changes the new update brings to the smartphone. Moreover, this new firmware update is live for both the Single SIM as well as the Dual SIM variants of the device. The size of the download is 325 MB.
Details About the Update
Here are the details of the firmware which brings the June Security Patch for Xperia 1 smartphone which happens to be the company’s latest flagship;
| Device Supported | Xperia 1 |
| Build Number | 55.2.A.4.154 |
| Security Patch Level | May 2020 |
| Android OS | Android 11 |
You can check out the images for the update below;