Flashing a custom firmware onto the EEPROM of the Intel I225-V Ethernet Controller

[verdazil]

Hi, 5T33Z0! I'm trying to flash a custom firmware onto the EEPROM of the Intel I225-V Ethernet Controller. I use the firmware and tool recommended by the author. (I225MOD + eeupdate64e.efi) Unfortunately, the file I225MOD is not flashed correctly and the adapter then does not work.

On the pictures in hex:

1. My original firmware
2. Author's modified firmware
3. My result after the firmware flashing

What is the my error?

[5T33Z0]

I don't know. Did you follow the instructions? It worked for me. But there's a kext now for the I225. Maybe it works for you:

https://github.com/SongXiaoXi/AppleIGC

[verdazil]

Thanks, I'll test! Do I have to go back to stock firmware to use this kext? And what settings should I use?

[5T33Z0]

I guess so. Becasue on my patched NIC, I didn't got a DHCP Lease with this kext. It connected to Ethernet but not to the Internet

[verdazil]

Yes thanks, it works now for me.

• stock firmware (Intel I225-V Ethernet Controller on Gigabyte-Z490-Vision-G)
• AppleIGC.kext used
• AppleIntelI210Ethernet.kext not used
• SSDT-I225V.aml not used
• boot-args e1000=0 used
• DisableIoMapper = YES (PlistEdit Pro)
• DisableIoMapperMapping = NO (PlistEdit Pro)

[5T33Z0]

Great. Thanks for your report. I will add your settings to my article about fixing the i225-V!

[verdazil]

5T33Z0, really can work without DisableIoMapper = YES I used this setting to work my WiFi+Bluetooth: Fenvi FV-T919 BCM94360CD

[5T33Z0]

Can you show me a screenshot that verifies that this kext is actually servicing the I225-V? It should be possible using IORegstryExplorer. That would be useful.

[verdazil]

From IORegstryExplorer

[5T33Z0]

Thank you very much!