Need Help Flashing Second GPU

[Officer Winters]

Hey guys just bought a Lenovo Y510P about 2 weeks ago and I still haven't been able to enjoy it without getting a fire extinguisher ready

So I have been reading about its faults and what I can do to help ease them. So far it's been a education. I have the 3.05 mod bios, spring mod, new thermal pads, paste and cut holes for the fans.

The thing I am trying to figure out is I can see if gpu-z that one of my GPUS have the [MODDED] next where is says the bios version. Can't distinguish weather its the built in GPU or ultra bay.

My money is on the one thats built in. So with that said (might get corrected) but lets say all thats left is to flash and mod the bios on the ultra bay gpu. When I try to save my bios in GPU-Z I get an error

with some research its a mobile gpu and thus wont save my bios. I am a little confused on the instructions on how to flash that gpu's bios and what steps I need to take in order to under-volt them.

I am able to under-volt one of them assuming its the one that says modded next to it.  I am a complete noob when it comes to this stuff but charting into unknown territory is well...lets just say challenging.

If someone can please give me a detailed guide on what do to I would really appreciate it. Thanks. Joe.