TWRP problem - ROM install - Samsung Galaxy Tab S SM-T705

Hi!

(Sorry for posting here, I can't post to the rom's topic...less than 10 posts...)

I'm trying to install this rom: [ROM][LOLLIPOP 5.1][UNOFFICIAL] Cyanogenmod: cm-12.1 for SM-T705 16gb

1. First of all, i made a backup with TWRP + I have the stock 5.0.2 Lollipop image download if I need to revert to that.

2. I've flashed the modem.bin file with Odin.

3. Booted into recovery, did a factory reset.

4. Then I've tried to install the rom, but it says that it's not for the LTE version (SM-T705), but for the wifi only version.

So the question is: is this because of a wrong version of TWRP? If not, what could be the problem?

Thanks in advance!