i have a rooted (locked Bootloader) droid razr m xt907 on android 4.1.2 jelly bean software build 98.15.66. ive benn installing and changing fonts on it for awhile and i decided i want to change more fonts so everything looked the same. i was using the font installer in romtoolbox Pro. it installed and told me to reboot and when i did it didnt reboot fully. it got stuck on a bootloop on the last part of the boot animation and it wouldnt fully boot. i tried flashing fastboot file named "VZW_XT907_4.1.2-9.8.1Q-66_FF.xml". heres the link to the download page i got it from: when i tried flashing it i got an error saying "downgraded security version" "update tz versioin failed" "preflash valdidaton failed for tz" how to get my phone to boot back up???? please help me