Download the Samsung firmware for the SGH-T399 SGH-T399 with product
code TMB from USA (T-Mobile). This firmware
version number PDA T399UVUAOH2 and CSC
The operating system of this firmware
is Android 4.2.2 , with build date Tue, 25 Aug 2015 07:51:03 +0000.
Security patch date is N/A, with