Samsung has released the April 2026 security patch for the Galaxy A53 and Galaxy A55. The April 2026 security patch for the Galaxy A53 comes with the update having firmware version A536NKSSGGZD1 and is currently available in South Korea. Samsung Galaxy A55 The Galaxy A55, on the other hand, is receiving the April 2026 security patch with an update having firmware version A556EXXSECZD1. It's curre