Error Flashing NVIDIA GTX780M on iMac 27" 2011

[LatinGroup]

Hi, I'm try to update my iMac with NVIDIA GTX780M 4Gb. I use USB Linux instruction method on https://forums.macrumors.com/thread....1596614/page-175?post=28184981#post-28184981

@The_Croupier @dosdude1 @Nick [D]vB @nikey22 @internetzel can help me please.

I try:
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Command: ./nvflash_linux --protectoff

NVIDIA Firmware Update Utility (Version 5.414.0)
Simplified Version For OEM Only
Adapter: GRID K2 (10DE,11BF,1028,05AA) H:--:NRM S:00,B:01,D:00,F:00

Identifying EEPROM...
EEPROM ID (C2,2012) : MX MX25L2005 2.7-3.6V 2048Kx1S, page
Setting EEPROM software protect setting...
Remove EEPROM write protect complete.

The next step:
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Command: ./nvflash_linux -6 780M_EG2.ROM

NVIDIA Firmware Update Utility (Version 5.414.0)
Simplified Version For OEM Only
Checking for matches between display adapter(s) and image(s)...

Adapter: GRID K2 (10DE,11BF,1028,05AA) H:--:NRM S:00,B:01,D:00,F:00

WARNING: None of the firmware image compatible PCI Device ID's match the PCI Device ID of the adapter.
Adapter PCI Device ID: 11BF
Firmware image PCI Device ID: 119F

NOTE: Exception caught.
Nothing changed!


I think:
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How to change Firmware image PCI Device ID (119F) by my Adapter PCI Device ID (11BF) on 780M_EG2.ROM?

Adicional Info:
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Command: ./nvflash_linux --setpci -v

NVIDIA Firmware Update Utility (Version 5.414.0)
Simplified Version For OEM Only
Adapter: GRID K2 (10DE,11BF,1028,05AA) H:--:NRM S:00,B:01,D:00,F:00
Identifying EEPROM...

EEPROM ID (C2,2012) : MX MX25L2005 2.7-3.6V 2048Kx1S, page
Reading adapter firmware image...
IFR Data Size : 1004 bytes
IFR CRC32 : 44BFB4F2
IFR Image Size : 1024 bytes
IFR Image CRC32 : 22288A43
IFR Subsystem ID : 1028-05AA
Image Size : 165376 bytes
Version : 80.04.AF.00.03
~CRC32 : 8DEF8834
Image Hash : 96E5E7B8C025E0BC361DE0CCAB1162C5
OEM String : NVIDIA
Vendor Name : NVIDIA Corporation
Product Name : GK104 Board - 20530001
Product Revision : Chip Rev
Device Name(s) : GeForce GTX 780M
Board ID : E128
PCI ID : 10DE-119F
Subsystem ID : 1028-05AA
Hierarchy ID : Normal Board
Chip SKU : 750
Project : 2053-0001
CDP : N/A
Build Date : 04/16/13
Modification Date : 04/18/13
UEFI Support : Yes
UEFI Version : 0x1001C (Apr 10 2013 @ 15488244 )
UEFI Variant Id : 0x0000000000000104 ( GK1xx MXM )
UEFI Signer(s) : Microsoft Corporation UEFI CA 2011
InfoROM Version : N/A
InfoROM Backup Exist : NO
License Placeholder : Absent
GPU Mode : N/A
Sign-On Message : GK104 P2053 SKU 001 VGA BIOS (HWDIAG).