This is a probably a redundant thread given the mega thread for the HDMI 2.1 fix, but I thought I'd make a stand alone thread in case anyone is desperately googling how to do this (like I was) specifically for the Neo G9.
Prerequisites:
- M1 MacBook (should also work for M2 but I can't confirm)
- Cable Matters USB-C to HDMI 2.1 Adapter/Cable Matters USB-C to HDMI 2.1 Cable/Anker USB-C to HDMI 2.1 Adapter (Just listing out the known working adapters, others may also work although I wouldn't risk it personally)
- Preferably a Windows PC w/ USB-C DP capabilities (Otherwise you'll need to use Parallels to run Windows on your MacBook)
- HDMI 2.1 cable if needed (You can use the one that comes in the Neo G9's box)
The biggest prerequisite however is ensuring that your USB-C to HDMI 2.1 adapter has the VMM7100 chip, this is critical (for the purposes of this tutorial, the VMM6100 chip may also work as well but I can't speak to it). I personally have the Cable Matters USB-C to HDMI 2.1 adapter and not the cable. I can't confirm which adapters will come with which chip (as two of the same adapter might have differing chips), but likelihood is it'll be the VMM7100.
AFAIK there's no way of checking before buying, but you can check via the VMMHIDTool which you'll need to use to flash your adapter to an updated firmware.
Once you've got your adapter, plug it into your Windows PC/MacBook. You'll then want to download the firmware attached here and open VMMDPTool64.exe. Keep in mind that if you're running Windows via Parallels, then you'll need to download VMMHIDTool from the Windows Store and use that instead.
Now if you open the tool you'll be able to see which chip your adapter uses (see where it says "CHIP ID" towards the top in the Debug tab). Here you should see VMM7100. If not, then DO NOT proceed with flashing (you'll risk ending up with a bricked adapter). If you've verified that your adapter has a VMM7100 chip then you can go on over to the FLASH tab and click "Load to FLASH". From here you can select the Spyder_fw_USBC_CM_7.02.112forMac.fullrom file and begin flashing the firmware onto your adapter. Once it's complete you should be greeted with a success pane and you should then disconnect and reconnect your adapter to your PC.
No EDID modifications/3rd party softwares are needed for this to work, it should simply be plug and play at this point. You should be able to go to the native display settings and select 5120x1440 @ 144hz from there.
I've only made a separate thread for this since I tried multiple firmwares from the mega thread (and other places on this forum) and for some reason this is the only one which worked for me. Others in that same thread also confirmed they were able to get 5120x1440 @ 120hz out of their Neo G9 as well. Please let me know if there's anything I missed/got wrong so I can update the thread. Also please let me know if you tried this and whether it worked. The attached file also has a flashing guide from Cable Matters in case I didn't explain things well enough. You can also find more info in the mega thread as well.
Prerequisites:
- M1 MacBook (should also work for M2 but I can't confirm)
- Cable Matters USB-C to HDMI 2.1 Adapter/Cable Matters USB-C to HDMI 2.1 Cable/Anker USB-C to HDMI 2.1 Adapter (Just listing out the known working adapters, others may also work although I wouldn't risk it personally)
- Preferably a Windows PC w/ USB-C DP capabilities (Otherwise you'll need to use Parallels to run Windows on your MacBook)
- HDMI 2.1 cable if needed (You can use the one that comes in the Neo G9's box)
The biggest prerequisite however is ensuring that your USB-C to HDMI 2.1 adapter has the VMM7100 chip, this is critical (for the purposes of this tutorial, the VMM6100 chip may also work as well but I can't speak to it). I personally have the Cable Matters USB-C to HDMI 2.1 adapter and not the cable. I can't confirm which adapters will come with which chip (as two of the same adapter might have differing chips), but likelihood is it'll be the VMM7100.
AFAIK there's no way of checking before buying, but you can check via the VMMHIDTool which you'll need to use to flash your adapter to an updated firmware.
Once you've got your adapter, plug it into your Windows PC/MacBook. You'll then want to download the firmware attached here and open VMMDPTool64.exe. Keep in mind that if you're running Windows via Parallels, then you'll need to download VMMHIDTool from the Windows Store and use that instead.
Now if you open the tool you'll be able to see which chip your adapter uses (see where it says "CHIP ID" towards the top in the Debug tab). Here you should see VMM7100. If not, then DO NOT proceed with flashing (you'll risk ending up with a bricked adapter). If you've verified that your adapter has a VMM7100 chip then you can go on over to the FLASH tab and click "Load to FLASH". From here you can select the Spyder_fw_USBC_CM_7.02.112forMac.fullrom file and begin flashing the firmware onto your adapter. Once it's complete you should be greeted with a success pane and you should then disconnect and reconnect your adapter to your PC.
No EDID modifications/3rd party softwares are needed for this to work, it should simply be plug and play at this point. You should be able to go to the native display settings and select 5120x1440 @ 144hz from there.
I've only made a separate thread for this since I tried multiple firmwares from the mega thread (and other places on this forum) and for some reason this is the only one which worked for me. Others in that same thread also confirmed they were able to get 5120x1440 @ 120hz out of their Neo G9 as well. Please let me know if there's anything I missed/got wrong so I can update the thread. Also please let me know if you tried this and whether it worked. The attached file also has a flashing guide from Cable Matters in case I didn't explain things well enough. You can also find more info in the mega thread as well.
As an Amazon Associate, MacRumors earns a commission from qualifying purchases made through links in this post.
