These steps aren't needed on the Japanese 3DS.
It doesn't work on the O3DS in Hans, because it runs in extended memory mode, so it reboots, it works with Luma, though.
If you get "You can't use this until you become the champion.", then wait until you beated the Elite 4, and finished the main game, then do the steps again.
Added my Magearna pk7 in a .zip for the people who don't get it working by this tutorial, please set OT + ID to your own, it still has the bottlecap.

Here is a tutorial how to get Magearna legitly, through Hans, or Luma locales spoofer, or PkHeX

Method 1:

Spoiler: New 3DS (Hans)

1. Open up Homebrew launcher loader on your CFW on your New 3DS/New 3DS XL
2. Open up Hans, select Pokémon Sun or Pokémon Moon.
3. Select Japan, and 804 MHz
4. Launch the game.
5. Open the menu by X, and select this option:

6. Scan this QR:

7. Pick it up, at the mall in Hau'oli city, at the antic shop there.
8. Profit

Method 2:

Spoiler: O3DS + N3DS (Luma locales spoofer)

1. Launch Luma settings by pressing start at boot (A9LH).
2. Enable the region/language emulation and external .code
3. Create a folder named locales inside SDRoot\luma where SDRoot the location of your SD is.
4. Create a .txt file with game's title id as the name, for Sun use: 0004000000164800
For moon use: 0004000000175E00

So for moon it's: 0004000000175E00.txt
And for sun it is: 0004000000164800.txt
5. Edit the file, and enter JPN for the region, an space, after that enter 2 characters for the language ("JP", "EN", "FR", "DE", "IT", "ES", "ZH", "KO") (without the quotation marks).
6. Save by selecting start.
7. Launch the game.
8. Open the menu by X, and select this option:

9. Scan this QR:

10. Pick it up, at the mall in Hau'oli city, at the antic shop there.
11. Profit
12. After using this, change region back to your own by editing JPN, in the text file to USA, EUR, CHN, AUS, KOR, or TWN.

Don't use method 3, unless you finished the game!!!
Method 3:

Spoiler: O3DS + N3DS (PC required) PkHeX method

1. Extract your save using JKSM or any other savegame extractor
2. Use FTP or put your SD out of your 3DS, and copy the SDROOT\JKSM\Saves\Pokemon_moon\save_dir_name or SDROOT\JKSM\Saves\Pokemon_sun\save_dir_name to your PC, where SDROOT the letter of your SD is, and save_dir_name the name of the save directory is.
For Save data filer copy the folder with the title id of the game in the directory of Save data Filer, to your PC.
3. Make a backup of the directory.
4. Open PkHeX sun & moon, goto the Event flag editor, and enable the flag "Magearna event active". See the picture here (pic by: @tomx86)

5. Export to main
6. Copy the folder back to your SD. (Back to the save game extractor folder, posted earlier).
7. Re-import the save.
8. Open the game, and go to the antiques store in Hau'oli city, in the mall.
9. Get Magearna.
10. Profit

Proof:

Spoiler: Huge images, might contain spoilers

[/spoilers]

Kind regards,
Procyon

 

[gundamu]

is it possible to make one that always is 100%?

not possible some guy on 4chan tried didnt work
he tried playing pokemon refresh with zygarde 100% form

model turned out to be a pikachu, which only happens if the game crashes or gives error duing model rendering

 

[Deleted member 373223]

he tried playing pokemon refresh with zygarde 100% form

model turned out to be a pikachu, which only happens if the game crashes or gives error duing model rendering

on demo or on full game?

 

[gundamu]

on demo or on full game?

full game duh
no one with cfw/hacked 3ds should be playing the demo lol

 

[Deleted member 373223]

full game duh
no one with cfw/hacked 3ds should be playing the demo lol

well, if he was trying with demo then it was normal because on the demo almost every model is swapped with a pikachu one

 

[Deleted User]

not possible some guy on 4chan tried didnt work
he tried playing pokemon refresh with zygarde 100% form

model turned out to be a pikachu, which only happens if the game crashes or gives error duing model rendering

Man that makes 100% zygarde bad then.They buffed its hp so much yet it only transforms in battle at 1 hp.What where game freak thinking?! It doesn't even get any attack or speed buffs eather

 

[Deleted member 373223]

transforms in battle at 1 hp

i think it transformms when orange hp bar

 

[Blue]

i think it transformms when orange hp bar

Yeah it does that for me.

--------------------- MERGED ---------------------------

Man that makes 100% zygarde bad then.They buffed its hp so much yet it only transforms in battle at 1 hp.What where game freak thinking?! It doesn't even get any attack or speed buffs eather

It transforms at orange and I think it gains HP because the bar goes green after.

 

[Deleted member 373223]

at the antic shop there.

can't find it

 

[Blue]

can't find it

shoping center at memele.

 

[Deleted member 373223]

shoping center at memele.

i know that but can't find the shop

 

[Blue]

i know that but can't find the shop

keep going forward then to the right. You will see a Poke center delivery guy.

 

[shiyro]

It's here

 

[Deleted member 373223]

It's here

Envoyé de mon Nexus 6 en utilisant Tapatalk

ahhh. that shop

 

[Procyon]

Is this QR code from a legit distribution?

Yes

 

[thoraine]

do you mean route 15 AEther residence?

Nah, it's in one of the trailers on Route 16. It's beside some old men with slowpokes or something. Can't recall.

 

[Jackson Ferrell]

These steps aren't needed on the Japanese 3DS.
It doesn't work on the O3DS in Hans, because it runs in extended memory mode, so it reboots, it works with Luma, though.
If you get "You can't use this until you become the champion.", then wait until you beated the Elite 4, and finished the main game, then do the steps again.

Here is a tutorial how to get Magearna legitly, through Hans, or Luma locales spoofer.

Spoiler: New 3DS (Hans)

1. Open up Homebrew launcher loader on your CFW on your New 3DS/New 3DS XL
2. Open up Hans, select Pokémon Sun or Pokémon Moon.
3. Select Japan, and 804 MHz
4. Launch the game.
5. Open the menu by X, and select this option:

6. Scan this QR:

7. Pick it up, at the mall in Hau'oli city, at the antic shop there.
8. Profit

Spoiler: O3DS + N3DS (Luma locales spoofer)

1. Launch Luma settings by pressing start at boot (A9LH).
2. Enable the region/language emulation and external .code
3. Create a folder named locales inside SDRoot\luma where SDRoot the location of your SD is.
4. Create a .txt file with game's title id as the name, for Sun use: 0004000000164800
For moon use: 0004000000175E00

So for moon it's: 0004000000175E00.txt
And for sun it is: 0004000000164800.txt
5. Edit the file, and enter JPN for the region, an space, after that enter 2 characters for the language ("JP", "EN", "FR", "DE", "IT", "ES", "ZH", "KO") (without the quotation marks).
6. Save by selecting start.
7. Launch the game.

I open Pokemon Moon via hans, but it just gets stuck on the yellow screen before it gets to the "selecting the Region, Clock, etc.". Any way to fix this?[/spoiler]

 

[Procyon]

I open Pokemon Moon via hans, but it just gets stuck on the yellow screen before it gets to the "selecting the Region, Clock, etc.". Any way to fix this?

I don't know, do you have CFW Luma3DS or any good one + hblauncherloader + hax 2.7 payload?

 

[Jackson Ferrell]

I don't know, do you have CFW Luma3DS or any good one + hblauncherloader + hax 2.7 payload?

Both my cfw's are Cakes and Gateway. hblauncherloader just downloaded from the internet a few minutes ago, so updated. Hax 2.7 payload checking now, but if not how do I update it? (Haven't done it in a while)

 

[Procyon]

Both my cfw's are Cakes and Gateway. hblauncherloader just downloaded from the internet a few minutes ago, so updated. Hax 2.7 payload checking now, but if not how do I update it? (Haven't done it in a while)

Update it by downloading starter.zip again

 

[Jackson Ferrell]

Update it by downloading starter.zip again

Yeah it's 2.7 payload... Should I replace the hans.3dsx with the new one from the (recently downlaoded) starter.zip?
EDIT: It works now for some reason