Problems Rooting XT1068 retgb topic

Hi all,

I'm trying to root my UK XT1068 (5.0.2) with retgb firmware. I tried CF Autoroot first, but that wasn't working because there is no retgb download image. So then I thought I would try to manually unlock the bootloader and flash TWRP then install a custom pre rooted rom. I unlocked the bootloader fine, and flashed TWRP successfully, but when I navigate to 'recovery' in the bootloader I just get a no command error. I tried installing CWM too, but I just get the same result. What am I doing wrong? All I want is to root my phone :(

Thanks in advance!