Samsung SM-S931Q firmware for Japan (SJP): 4 builds in the SamMobile archive, newest first. The latest is S931QOPS1BZA1 (Android 16, built 13 January 2026). Open a build to download it, or switch region with the country selector.
We recommend using Samsung’s own utilities, Samsung Smart Switch and OTA (Over-the-air), to upgrade devices. Use SamMobile only if you are 100% sure about the risks involved in flashing
your device. SamMobile is not responsible for any damage caused by using the files on this website.
