Looking for some Advice and help with RGH/Jtag/R-jtag

Hey guys whats going on. I have a friend who had some consoles sitting in his closet collecting dust and was trying to see if I can find one that I could Jtag or RGH soo forth. Here are the Specs of the consoles. I read the tutorial but dont really know if they could be Modded. Lemme know what you think thanks.

Halo edition xbox phat 360 HDMI = 2.0.16203.0

White edition xbox phat 360 No HDMI = 2.0.13604.0

White Edition Xbox phat 360 No HDMI = 2.0.7367