Yuzi download

Hello everyone,

So I am very new to the concepts of rooting and custom roms, and I know I should have done some more research before I started. But now I have gotten myself into a bit of a pickle. I have the SM-G920P (Sprint) S6 and earlier this week I managed to root the phone and use TWRP to download and flash a custom rom. I used MD5: 7c1d34f7ab066104c924fb7a960b57d0 to install Renegade and then the phone booted just fine. I made the mistake afterwords when I let the phone reboot, but I had not turned on the option for OEM so now my phone is stuck in a boot that gives me a FRM lock because of the custom binary. It will not let me get into the andriod recovery (volume up, home, and power) but I can get to the download mode. I cannot seem to get any firmware to flash onto the device because I always get a fail after NAND write. Any help or direction from here would be great, Thanks.