Samsung Galaxy A55 5G (SM-A556B) firmware for Czech Republic (O2C) (O2C): 3 builds in the SamMobile archive, newest first. The latest is A556BXXS9BYF3 (Android 15, built 27 June 2025). 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.
