[Q] can't install bootloader or rom in twrp topic

TF201 rooted and unlocked.
Twrp v. 2.6.0.0.
Android version 4.2.1
Build - Energy rom March 28th, 2013 JP J0P40D.WW_epad - 10.6.

How do I install Jelly bean 4.2.1 boot loader and energy rom thru twrp. Spent days reading and I am frustrated.