Galaxy J2 Core SM-J260T1 with product code TMK from USA. This firmware has version number PDA J260T1UVS2ASD4 and CSC J260T1TMK2ASD4. The operating system of this firmware is Android 8.1.0 , with build date Mon, 15 Apr 2019 10:21:04 +0000. Security patch date is 2019-04-01.