All I can think of regarding FlashFire is to take a look at the following post regarding it.
https://xdaforums.com/showthread.php?p=76673408
Good Luck!
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UNLESS asked to do so, PLEASE don't PM me regarding support. Sent using The ClaRetoX Forum App on my SM-G900V device.
do you happen to have the VZW_OF1_WifiFix.zip file? No mirrors, also I found out why flashfire kept crashing is because the date wasn't set to october 9th 2015 I'm currently installing the ROM but need the WiFi fix i'm pretty sure