the receiver works on new/old 3ds/2ds of system version from 9.0.0 to 11.3.0-36
*New system update may block this from working. In order to prevent your 2/3DS update the firmware automatically, block the firmware update by following the instruction.
I. Choose a link below to download the receiver. You'll get a zip file with name like 'to-sd-root-~-DS.zip'. Unzip the file and copy all the contents to the root of your SD card. (If you have a new 3DS, you need to remove the cover first then get the SD card out. You also need a micro SD card reader.)
Please note: If you can already run homebrew, then you only need to download & unzip the pokgear pokemon receiver 3dsx program folder and put it to /3ds folder of your SD card. Then go to step 3 in "Run the receiver" section.
II. Download the otherapp payload (for your version and region.) Download otherapp, not ropbin.
III. Copy the otherapp payload to the root of your SD card and rename it to otherapp.bin
IV. Reinsert your SD card into your 3DS/2DS
Run the receiver
Open Nintendo Sound. Go through all of the bird tips, then close the app normally and reopen it
Launching SoundHax immediately would cause these tips to appear on every launch of the Nintendo 3DS Sound until this is done
Go to /SDCARD, then play “<3 nedwill 2016”
This may take many tries. If it freezes, just force the console to power off by holding the power button, then try again.
Your console should load the Homebrew Launcher.