title_body: DJI FPV Goggles Max Power option not available. Location: USA I have a set of DJI FPV goggles but cannot change the Max Power option. It shows on the menu under the device section but I cannot select it. 
  
  
  I am in the USA
  updated to latest firmware: V01.00.0500
  2S 3000mAh battery
  .txt file on sd card narco_pwr.txt with pwr_2 attribute in txt file
  I have not powered or setup my Caddx Vista.
  
  
  Max Power is  set to 25mW and I cannot change it.
upvoted_answer: You won't know if the "hack" has worked until you also have a Vista or Air unit bound to the goggles.
  
  As a quick test, I powered up my goggles and left everything else off.  If I go to where you can adjust the power output it only shows 25mw and is grayed out.
  
  As soon as I power up the rest of the system and the goggles connect to my air unit, I can change power output and other settings.  There are a number of options that require the air unit or vista to be powered on before you can change them.  I assume that information must be stored on the air unit side, not in the goggles.