X-ONE X4 TAB FLASH FILE FIRMWARE 100% TESTED Unknown February 03, 2018 0 MT6572__X-ONE__X4__kt07c_honghd__4.4.2__KT07C.3G-20151008 X-ONE X4 TAB FLASH FILE 4.4.2 100% TESTED X-ONE X4 TAB FIRMWARE 4.4.2 100% TE... Read more »