How can I copy rom from one phone to other?

[Mike Cross1]

need to copy rom from one phone to other

I have 2 boost mobile HTC evo design 4g, 1 is working fine , rooted , TWRP recovery , unlocked, stock rom. the other is boot looped , locked , ccan not get to unlock, I can get to load the unlock_bin, comes up on phone, volume up for yes, press power to accept , but phone does nothing, now volume down to no, press power, phone shuts down. With that being said, can i take a twrp backup and make a rom.zip to load though bootloader from sdcard.

Thanks in advance for any help on this project
Mike