Default SGH-I317 on SkyNote 10, lost root, WiFi

Hi all,

I recently upgraded my Note 2 to Android 4.3 using the SN10 ROM, and everything went smoothly with the exception that I haven't been able get root back (flashing the SuperSU 1.8 update does nothing) and Wi-Fi (the modem zip did nothing when I flashed it from TWRP, and the instructions say to load a file with Odin, except Odin cannot load .img files!)

Any help would be appreciated. I'm a computer engineer and I've been using custom ROMs since my HTC iPAQ PDA so I'm not a noob when it comes to this things.

TIA,
Erik

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