Yes, that is a normal message.

Use this version of nvflash. 

You're good to go. Now just reboot your computer.

Looks like a bad flash. Hope you have a copy of your original vbios.

Should I disable the GPU in device manager it before flashing?

Any idea where the EEPROM chip on a Titan X Hydro Copper is or its markings? I don't think my card is a run of the mill EVGA titan x with a EK block on it, the original bios isn't even found anywhere on the internet, it's 84.00.45.00.03 (only seen an ASUS card with this BIOS on Techpowerup) where as all EVGA cards there are 84.00.1F.00.90

You have dug yourself into this hole.  Before you dig it too much deeper, please contact EVGA support and see how they can help you.
 
https://www.evga.com/support/ticket/support.aspx
 
Using Google image search to look at PCBs, I am QUITE certain that this is the TITAN X EEPROM chip location:

 
I can't quite read all of the characters written on it in the above image in order to be certain, but it looks like a Macronix non-volatile Flash memory chip.
 
I would HIGHLY advise against the following action, but as a last ditch effort, you theoretically could have the chip removed by a skilled local repair person, have it re-flashed, and have it re-installed in order to get your video card functioning again.  But, as stated, that is highly unadvised since doing so would ensure that your video card's warranty remains void; and it is quite likely that EVGA can provide you with a better alternative in order to regain and retain your video card's warranty.

I thought all titan X PCB are the same because nVidia said no partner cards?

I just had a bad feeling, I got two of these cards, both second hand, one was boxed (this one is not having any issue with a custom 120% power limit vBIOS), the other was on its own (the problematic card). Would it be possible for someone to slap a EVGA/EK block and backplate on a ASUS PCB and make it look like a standard hydro copper? Would that even affect anything since the hardware is all the same, though the vBIOS sticker is different?

Anyone got a version of NVflash that works for maxwell GPUs and have the -4 -5 -6 flags enabled, I am trying to force a flash.

Try this one... http://www.mediafire.com/...g3i26v3lmf/nvflash.zip

I use the older NVFLASH 5.265 for Windows with the -4 -5 -6 flags for my GTX 760..Don't know if it'll work for your card or not though..There's a  lot of versions with certificate checks bypassed at Overclock.net here..Also at TechPowerUp here, but not with certificate checks bypassed..The "No NVIDIA display adapters found" message means the particular version won't work with your card..Good luck.

OK, I think I figured out why I couldn't get NVflash DOS ver5.163 to work in the first place, it doesn't support Maxwell (or above, it came out in 2014...) I think. I have my old trustly GTX970 hooked up with the Titan X below it and I can't even see the 970 when booted into DOS.
 
Anyone got a NVflash DOS version that support flag -4 -5 -6 and maxwell GPUs?
 
I am weirdly proud of my super janky loop:

Scarlet-Tech
https://twitter.com/JoeDi...tus/636367211616202754

Follow this tweet. Joe dirt nvflash was the one I always used, didn't need to use -4, -5, -6 commands.

Not seems to be working for me:

I am using NVFlash-all_checks_bypassed-v5-206-0-1.zip in windows 10 x64 The -6 flags don't seems to work for me, I am getting:
 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
c:\nvflash>nvflash -v
NVIDIA Firmware Update Utility (Version 5.206)
Modified Version by Joe Dirt
BIOS Versions of NVIDIA display adapters present in system:
<0> GeForce GTX 970 (10DE,13C2,19DA,1366) --:NRM 84.04.28.00.43
<1> Graphics Device (10DE,17C2,3842,2999) --:NRM 84.00.1F.00.90
c:\nvflash>nvflash -i1 -r
NVIDIA Firmware Update Utility (Version 5.206)
Modified Version by Joe Dirt
Adapter: Graphics Device (10DE,17C2,3842,2999) H:--:NRM S:00,B:06,PCI,D:00,F:00
The display may go *BLANK* on and off for up to 10 seconds during access to the EEPROM depending on your display adapter and output device.
Identifying EEPROM...
EEPROM ID (C2,2012) : MX MX25L2005 2.7-3.6V 2048Kx1S, page
Setting EEPROM software protect setting...
Remove EEPROM write protect complete.
c:\nvflash>nvflash -i1 -6 2990V450.rom
NVIDIA Firmware Update Utility (Version 5.206)
Modified Version by Joe Dirt
Checking for matches between display adapter(s) and image(s)...
Warning: Please make sure the NVIDIA Display Driver is not loaded by disabling
using Device Manager before continuing. Else update may fail, and
system may crash!
Press 'y' to continue (any other key to abort):
Adapter: Graphics Device (10DE,17C2,3842,2999) H:--:NRM S:00,B:06,PCI,D:00,F:00
WARNING: Firmware image PCI Subsystem ID (3842.2990)
does not match adapter PCI Subsystem ID (3842.2999).
ERROR: PCI subsystem ID mismatch
~~~~~~~~~~~~~~~~~~~~~~~