Here is a quick guide on how to use Flashfire by Chainfire to restore your Avant to stock. *First make a backup in recovery *Download and install Flashfire from here: http://www.apkmirror.com/apk/chainf...-release/flashfire-0-50-android-apk-download/ *Copy the apk to a secure location (ext sd will do fine) for later use. *Open Flashfire and grant root. *On "Actions" tab, tap the plus (+) sign in the bottom right corner. *Tap "Flash Firmware Package". *Select your Firmware Package (tar.md5 file from sammobile or wherever you get it from... Not a zip). *Select to restore "Boot, System, Cache, Trustzone, and DBI/SBI partitions (and recovery if you want stock everything) and press the checkmark on the top right of the screen. *Select "Yes" when prompted about protected partitions. *Make sure "EverRoot" is enabled (you can unroot later if needed). *Tap "Flash" at the bottom of the screen and let it do it's thing. *Phone will reboot. If wifi/data isn't working after boot: *Enable "Unknown Sources" in Security Settings. *Use file explorer to install Flashfire again. *Open Flashfire and add action again. *Pick your Firmware Package again. *Select "Modem Firmware" and "Firmware" partitions and deselect everything else. *Change "Reboot" option to "Recovery" at the bottom of the screen (just above the "Flash" button. *Tap "Flash" and let it do it's thing again. *Should reboot to recovery (if not, do it yourself). *Wipe data and reboot to system. Note: I always keep a kingoroot apk on my sd card just in case, but it shouldn't be necessary as long as EverRoot is enabled and you don't flash your recovery.