Enable FCC mode on DJI FPV System (700mW 8 Channels)

by Oscar
Published: Last Updated on

FCC mode allows you to have access to the full 700mW output power and 8 channels, while the CE mode only supports maximum 25mW and 4 channels available. I will show you how to easily switch to FCC mode in this tutorial.

Make sure you follow your local regulations, don’t do it if it’s illegal.

Benefits of FCC Mode

By enabling FCC mode, you will have access to 8 channels and 4 different levels of output power:

  • 25mW
  • 200mW
  • 500mW
  • 700mW

Only in FCC mode, you can do the 1200mW output power hack, and enable the 50Mbps bit-rate for your video feed.

Are You on CE or FCC Mode?

To find out whether you are on CE mode or FCC mode, simply check how many channels are available in your DJI FPV goggles (under the Player option).

4 channels means CE mode and 8 means FCC mode, and if you are on CE mode, the only power option is 25mW. If you are already on FCC mode then you don’t have to do anything here.

Switch to FCC Mode in DJI Air Unit

  • Take the micro SD Card out of the Air Unit
  • Create a text file on the root directory, name it naco(so the file name and extension becomes naco.txt)
  • Write 1 in the text file (which means FCC mode for USA)
  • Insert SD card in the Air Unit
  • Power up goggles, and then Air Unit

To verify if you have successfully changed it, check again in the Player menu and see if there are 8 channels.

Can’t get it to work? Download my text file and try again.

You can put it back to CE mode by entering number 3 in the text file. The meaning of the number in the text file:

  • 1 – FCC mode for US, 8 Channels
  • 2 – FCC mode for Canada 4 Channels
  • 3 – HK CE 4 Channels
  • 4 – CN SRRC 4 Channels
  • 5 – JP Japan 3 Channels
  • 6 – KR Korea 4 Channels
  • 7 – BR Brazil 4 Channels
  • 8 – FR CCA 4 Channels

Enable FCC Mode in Caddx Vista

  • Power up the VISTA and DJI Goggles, wait until you see image in the goggles
  • Connect USB cable to the VISTA, external drive should pop up on your computer
  • Create a text file, name it naco (so the file name and extension becomes naco.txt)
  • Type 1 in the text file, and save it
  • Copy text file in the Vista external drive, unplug USB cable
  • Restart both Vista and FPV Goggles

To verify if you have successfully changed it, check again in the Player menu and see if there are 8 channels.

Can’t get it to work? Download my text file and try again.

You can put it back to CE mode by entering number 3 in the text file.

Repeat This Procedure After Every Update

When you update the firmware on your DJI FPV goggles and Air Unit, it will reset the power setting back to the default settings according to your region (e.g. if you are from Europe, it will put it back to CE mode), therefore you might have to repeat this process.

Other Methods

Apart from the text file method, I’ve heard using VPN when flashing firmware also works but I have not tried this myself. (using US IP).

Edit History

  • Mar 2020 – guide created
  • Jun 2020 – added procedure fore Vista

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Bill 14th November 2021 - 12:49 am

I finally have all 8 channels now in 25mbps mode and 1-3 including the Public Channel on 50mbps (200mw) in my DJI Goggles running the Caddx Vista with the Nebula Nano camera by resetting my goggles, but when I switch it to 50mbps mode in the goggles and try to arm I loose connection to the DJI FPV Remote Controller, the bind light on the Remote turns red (I never lose video in the goggle). I can set it back to 25mbps and pick channel 1 and it will arm with no issues (although it does like to switch back to the public channel) and I can fly without issue. The Caddx Vista, Remote, and Goggles are updated with the latest firmware. I respect the work you do for the FPV community, we need more like you. Any help would be greatly appreciated.

Droogo 26th August 2021 - 1:41 am

Only works because I did as you said “Power up goggles, and then Air Unit”. The order matters.

josh 22nd August 2021 - 7:53 pm

hi my goggles shows 8 channles but wont let me pick none and it only allowys it to stay on 25 mw

Oscar 24th August 2021 - 12:49 pm

Try to give the goggles a factory reset, and restart both the quad and goggles?

Magda ben 15th August 2021 - 10:33 am

Hi guys,

I did the hack and I can choose from v2 goggles the 1000-12000 me power but I only have 4 Chanels. Does that mean that the hack is done or not?

Oscar 16th August 2021 - 7:24 pm

Are you using 50Mbps mode?
If you switch back to 25Mbps mode you will get all 8 channels.

Jimmy Merens 9th August 2021 - 4:09 pm

The hack is still functional for caddx vista. To get the unit to appear as a storage device , plug the battery on the drone and connect it with usbc cable.
I saved 2 txt files (just in case one would not be recognised) “naco” and “naco.txt” both saved in ANSI format and with “1” as content.

working like a charm
/respect /happydance :)

Andrey 30th July 2021 - 12:34 pm

Does it work for 1.02 firmware?

Oscar 30th July 2021 - 7:46 pm

Not sure, but it works with the latest version (1.06)

Henry Lau 30th July 2021 - 9:21 am

Does it work on DJI FPV?

Oscar 30th July 2021 - 7:46 pm

This hack is for the Air Unit and Caddx Vista only, not for the DJI Drone.

christopher 5th August 2021 - 12:38 pm

hi oscar does this mean it definately wouldnt work as the b3yond app suggests it does for the dji fpv thanks

Scott A Abramczyk 28th July 2021 - 6:35 pm

I tried the hack and I seems like I can only get 1,000 milliwatts and 8 channels. I thought I should be getting 1,200 mL, did I do something wrong?

Geo 1st July 2021 - 10:33 am

Hi guys! I managed to change my dji air unit into FCC from CE on 01.07.2021.

I had this problem when it didn’t work on the first few tries. I tried the steps using a “hama” 32 gb micro sd card and it didn’t work. I changed the micro sd card, used a sandisk that was formatted on exFAT, and it worked.

Try it out maybe it helps.

Jazz 19th June 2021 - 8:16 pm

Hi Oscar

Do you need to leave the sd card in the dji unit after the unlock or has it done its job now ?

Oscar 20th June 2021 - 2:12 pm

No, once it’s done you can remove the SD card.

serdar 2nd June 2021 - 5:47 pm

thank you very much

Y C Lui 18th March 2021 - 4:31 am

Does this method increase the transmit power of the DJI remote controller too ?

Athos 31st December 2020 - 9:43 am

on the dji air unit it works!
but on the caddx vista it doesn’t work .. i only see “channel 8” and i can’t change it

JAMES BARTLETT 6th December 2020 - 11:45 am

Try this yesterday and it worked first time. 25 – 700mw and eight channels, and every works fine.

Darko 4th December 2020 - 7:10 am

Hi Oscar,

the hack also doesn’t work on my Caddx Vista. I copied the naco.txt file on the caddx vista and the goggles see 8 channels but as soon I arm the drone it switches back to CE limitations. Do you know where the issue could be?

Kind regards,

harryandsally 27th November 2020 - 9:10 am


I spent ages trying to get this to work using windows the trick was when you save the text file make sure that 1) you don’t write .txt in the file name and 2) MOST IMPORTANTLY when you save on windows 10 the encoding should be ANSI not UTF-8 with BOM. I can confirm with this this is working outside of the US with no VPN 27/11/20

Jeffrey J Reynolds 20th November 2020 - 2:51 am

I have also tried the hack a dozen times using this naco.txt , the goggles dont see it, no luck ..
I put flash card in the goggles no luck, down graded the goggles to version .500 no luck
My computer ( Imac ) does not see the caddx vista when plugged usb, but betaflight interacts perfectly with the caddx vista when attached.

Seriously , i think the hack has been blocked . I will pay someone to upgrade the goggles,

Masahiro 18th November 2020 - 4:48 pm

Finally I formatted the storage and I can see 4G storage when I pluged to PC.
but… still not working FCC Hack even I put Oscar’s file.
I tried all format (NTFS, FAT, FAT32, exFAT)
What kind of format should I use for this Hack for Disk of Vista??

Jason 6th November 2020 - 7:00 pm

Dear Oscar I have looked everywhere and cannot get a solid answer as far as the 1200 milliwatt mod to the caddex Vista if you are already on FCC mode do you have to do anything to the Vista itself like hooking USB up to it and putting a file into it to get the 1200 milliwatts or do you just have to do that to the goggles to actually get 1200 me of outputting power?

Alan 10th October 2020 - 2:40 pm

Hi Oscar,
I created txt file inserted to root directory reinstalled sd card plugged in goggles then Geprc rocket lite with Caddx vista and worked fine , 8 channels. Then I tried the A85 Caddx Nebula, still only 4 channels, any suggestions


Oscar 8th January 2021 - 10:26 pm

You have to do this on every Air Unit.

Alan 10th October 2020 - 3:03 am

Anyone tried this on the Caddx Nebula V1?
Bought the InFlight A85 fly’s great however camera REALLY sucks, Caddx just blew me off when I asked for help with a “send us $$” and will upgrade sensor……..last Caddx I’ll buy.

Oscar 8th January 2021 - 10:24 pm

The Nebula V1 uses the exact same Vista VTX unit, so this would work.

uwe 11th August 2020 - 5:22 pm

To get the drive of the vista shown in windows i had to switch on the vista the goggles and than connect it to the pc. Only switching on the vista did not show the drive.

Daninhelp 27th July 2020 - 7:56 am

So I solved my problem above. Windows 10 didn’t create a drive to store the txt on, by default. It did however when I changed the drive letters of the recognized devices. For that you have to go to the disk management: “create and format disk partitions”. There you will see the Caddx Vista as two drives, I changed both to some higher letters (F and G) and then Windows instantly created a storage drive.

Daninhelp 24th July 2020 - 9:01 pm

Plugging in the Caddx Vista doesn’t make it appear as a storage device for me. I tried different laptops. Windows 10 finds a device and sets it up successfully, the DJI Assistant software finds it too. It however doesn’t give me a normal drive, on which I could place the text file. Can anyone help?

Oscar 31st July 2020 - 3:47 pm

You might have to install the driver for the Vista

Cliff 23rd July 2020 - 3:55 pm

I’ve tried the FCC to CE manual hack half a dozen times following the instructions explicitly. It doesn’t seem to work anymore.

Oscar 31st July 2020 - 3:28 pm

make sure the text file name is naco.txt, not naco.txt.txt

Sander 21st July 2020 - 3:49 pm

Hi Oscar!

I’m living in the EU and mij airunit is on firmware V1.6
Is there a other way to switch to FCC? Your methode doesn’t work anymore….
I hope there is!! Can’t wait to see the 50mbps!

Keep up the good work!

Oscar 21st July 2020 - 3:59 pm

I literally just did this hack yesterday on firmware 1.6. Worked like a charm.
Make sure you follow the instructions

Philip Schmid 24th June 2020 - 7:16 am

Hi Tristan, what exactly is the VISTA? Ive been trying to find what it is, but no luck. If you mean the DJI assistant, I have tried powering up, connecting the cable afterwards and checking for an external drive to show up. No luck. Do you have any idea how to fix this, since the SD-Card method doesnt work anymore?

Gilbert Joncheere 21st June 2020 - 9:37 am

Hi Oscar,
Regarding: Enable FCC mode on DJI FPV System (700mW 8 Channels)”
Someone wrote: Since as of update 1.05 to be blocked. Can anyone confirm that?

I have update 1.05 on my Caddx air unit and the 700mW hacking still works.


Wolf_FPV 18th June 2020 - 6:33 pm

Since as of update 1.05 to be blocked. Can anyone confirm that?

ori 16th June 2020 - 6:59 am

Doesn t work on firmware 0500 van you help please

Tristan Bruce 11th June 2020 - 12:10 pm

Hi Oscar,

Might be worth adding in the info about the Vista on this article.

“It’s been confirmed that the switching between CE and FCC mode, as well as the 1200mW power hack can be done by accessing internal storage via USB cable.

Power up the VISTA, then connect the USB cable, an external drive should pop up on your computer. Then put the .txt file in there as usual.”

Winston Smith 6th June 2020 - 10:12 pm

Thanks! Does the DJI controller automatically transmit in FCC mode if it sees that the air unit is in FCC mode, or does the controller also need to be updated somehow?

Oscar 14th June 2020 - 3:36 pm

Once paired the Air Unit will do whatever the Goggles tell it to do.