Samsung Galaxy A40 Sm-a405fn R(android 11) (bit... (2026)

When looking for specific firmware, the "BIT" (binary) version is critical. You cannot downgrade a phone to a firmware version with a lower BIT number than what is currently installed.

Enhanced dynamic memory allocation to help apps run more smoothly on the 4GB RAM hardware. Samsung Galaxy A40 SM-A405FN R(Android 11) (BIT...

Found in initial Android 11 releases (e.g., build A405FNXXU3CUC2 ). When looking for specific firmware, the "BIT" (binary)

Found in later security updates and final stable builds (e.g., build A405FNXXU4CWC3 released in April 2023). Android 11 (One UI 3.1) Key Features Found in initial Android 11 releases (e

Improved autofocus and enhanced photo/video editor features.

Modernized UI with more consistent icons, a redesigned quick panel, and improved notification organization.

received its final major OS upgrade with , running Samsung’s One UI 3.1 . This update represents the peak official software for the device, as Samsung concluded support for this model in June 2023 . Firmware & "BIT" Revision