[Q] Trouble with WanamLite v3.1 LTE modem XXUGNH7 topic

Hello,
I've lurked here for answers, but I couldn't find much about my specific issue, I'm trying to figure out how to ask for help, so bear with me
I have the SGH-M919, I'm no stranger to rooting, ROM flashing, and the lot.

So here is my issue, I used Wanam's site to Install the Rom, because I couldn't find the thread here, and it's fantastic. The trouble is, I realized I wasn't getting LTE, and saw there was the optional Modem to download and flash. that's the Issue. this is what happened (this is the result from a combo Wifi-fix/modem package with the same modem, but it did it with just the modem itself)

<ID:0/004> Added!!
<ID:0/004> Odin v.3 engine (ID:4)..
<ID:0/004> File analysis..
<ID:0/004> SetupConnection..
<ID:0/004> Initialzation..
<ID:0/004> Get PIT for mapping..
<ID:0/004> Firmware update start..
<ID:0/004> SingleDownload.
<ID:0/004> NON-HLOS.bin
<ID:0/004> NAND Write Start!!
<ID:0/004> Transmission Complete..
<ID:0/004> Now Writing.. Please wait about 2 minutes
<ID:0/004> FAIL! (Auth)
<ID:0/004>
<ID:0/004> Receive Response from boot-loader
<OSM> All threads completed. (succeed 0 / failed 1)

and after this the phone shows

START [224,1440]
SECURE CHECK FAIL : (insert PIT, apnhlos, aboot)

When I reboot, it's fine, Just still no LTE
I tried different USB cables, different ports, and tried using the PIT, tried even reflashing the bootloader (glad it failed too) but all gave the same result
Basically, What do I do to Flash this, or fix LTE? Thanks in advance