Need Help Xt926 Stuck Fastboot


Xt 926 Partition (boot) security version Downgraded

set was going off on logo
i try flash with Filename: VZW_XT926_4.4.2-KDA20.62-15.1_1FF.xml
but fail on 1/17

how solve ?
Xt 926 Partition (boot) security version Downgraded