Samsung Rolls Out January Security Patch to Galaxy S22/S23 and 2023 Foldables

Overview

• Galaxy Z Fold 5 and Z Flip 5 are receiving the January 2026 update in South Korea with builds F946NKSSFZA1 and F731NKSS5FZA1, respectively.
• Galaxy S23 and S22 series began getting the patch in South Korea this week, with reported package sizes near 386–399MB and model-specific firmware identifiers.
• Samsung’s bulletin lists about 55 vulnerabilities addressed, including contributions from Google (23, with two not applicable), Samsung Mobile (around 30), and Samsung Semiconductor (4), with at least one critical fix.
• US carrier and outlet listings show January builds for the Galaxy S25 lineup and recent Fold/Flip models, indicating availability is expanding stateside as the staged rollout continues.
• The Galaxy Watch 5 non‑cellular model is updating in Europe on firmware R910XXU1DYL6/R910XXU1DYLA, and some users report improved stability and battery performance beyond the security fixes.