@inoxentprinc: You can NEVER install the TWRP built for Nexus 4 on the LG Spirit. It may brick your phone permanently.
Nowhere I said to flash the Nexus 4 TWRP on LG Spirit.
What I meant when I wrote the following:
“The above guide is for Nexus 4, but just give a try on your phone see if that works??”
I was telling you to exercise the same dd command but with the LG Spirit TWRP itself and not by flashing the Nexus 4 TWRP own LG Spirit.
Whatever guide you are following, if it is for another device then you just need to follow the same set of command or sequence of steps for your own device. You cannot do the exact same thing by flashing the things meant for other device(s).