pkNX: Nintendo Switch ROM Editor & Randomizer

[Kaphotics]

 

[inspinzandtime]

i cant quite figure out how to randomize PLA and there is no videos online helping at all. how would i go about it? when i tried opening wild encounters in the master dump it says:  System.IO.FileNotFoundException: Could not find file 'C:\Users\me\Desktop\emulation\switch games\pla rom dump\romfs\bin\field\encount\new_huge_outbreak_group.bin'.  whwn i try pressing any of the other options under the master dump section it just makes the error noise and doesnt open or show anything. what can i do here? im stumped

[Kaphotics]

2 minutes ago, inspinzandtime said:

i cant quite figure out how to randomize PLA and there is no videos online helping at all. how would i go about it? when i tried opening wild encounters in the master dump it says:  System.IO.FileNotFoundException: Could not find file 'C:\Users\me\Desktop\emulation\switch games\pla rom dump\romfs\bin\field\encount\new_huge_outbreak_group.bin'.  whwn i try pressing any of the other options under the master dump section it just makes the error noise and doesnt open or show anything. what can i do here? im stumped

Dump the entire ROM as well as the latest patch. You need to be on the latest patch, as the program is designed to operate on the most recent release of the game data.

[inspinzandtime]

1 hour ago, Kaphotics said:

Dump the entire ROM as well as the latest patch. You need to be on the latest patch, as the program is designed to operate on the most recent release of the game data.

thanks that made everything work. but how do i actually randomize everything there? to me it just looks like a bunch of numbers and it confuses me a lot 

[RaphaJulia]

Hello,

I want to try randomized pokémon games so I followed few tuto on Youtube and every video put links to a github page that leads to an Azure one but I can't find any button to download the software anywhere on this page.

Thank you in advance for your help.

[Kaphotics]

2 hours ago, RaphaJulia said:

Hello,

I want to try randomized pokémon games so I followed few tuto on Youtube and every video put links to a github page that leads to an Azure one but I can't find any button to download the software anywhere on this page.

Thank you in advance for your help.

Read the first post in this thread rather than referencing old YouTube videos.

[Moustiflor]

Hello,

I downloaded the latest version of PKNX and tried to randomize my game after dumping the romfs and exefs from my Pokémon Sword copy on my Switch. I copied those folders from my SD card into a folder on my PC, then opened the PKNX application.

I tested a few features, and after randomizing some elements, I closed the app, transferred the modified romfs and exefs back to my Switch, and launched the game. Everything worked fine.

This time, I wanted to do a clean randomization without changing everything, but I can't seem to restore the game to its original state in PKNX. I deleted my save file on the Switch, uninstalled Pokémon Sword, reinstalled it, and dumped the romfs and exefs again.

I even deleted and reinstalled PKNX, but no matter how many times I try, the “Static Pokémon” option stays randomized. It's still showing Haxorus with ID 00 instead of resetting to the  default values. Unless this is normal? But it doesn’t seem like that’s the default state, right?

[Kaphotics]

5 minutes ago, Moustiflor said:

Hello,

I downloaded the latest version of PKNX and tried to randomize my game after dumping the romfs and exefs from my Pokémon Sword copy on my Switch. I copied those folders from my SD card into a folder on my PC, then opened the PKNX application.

I tested a few features, and after randomizing some elements, I closed the app, transferred the modified romfs and exefs back to my Switch, and launched the game. Everything worked fine.

This time, I wanted to do a clean randomization without changing everything, but I can't seem to restore the game to its original state in PKNX. I deleted my save file on the Switch, uninstalled Pokémon Sword, reinstalled it, and dumped the romfs and exefs again.

I even deleted and reinstalled PKNX, but no matter how many times I try, the “Static Pokémon” option stays randomized. It's still showing Haxorus with ID 00 instead of resetting to the  default values. Unless this is normal? But it doesn’t seem like that’s the default state, right?

The program saves the layeredfs folder next to the executable. To remove any previous modifications, remove the layeredfs folder.

[Moustiflor]

1 hour ago, Kaphotics said:

Le programme enregistre le dossier layeredfs à côté de l'exécutable. Pour supprimer toute modification antérieure, supprimez le dossier layeredfs.

hi , Alright, I checked, but there’s no “layeredfs” folder in the program’s directory, and not in my folder with the romfs and exefs either. Where should I go to find this folder and delete it? 

Edit : When I make a change with PKNX and then close the app, it does create a folder with Pokémon Sword's title ID next to romfs and exefs. When I delete that folder, it does seem to remove the changes I made at that moment — but the Static Pokémon data still doesn’t reset. It stays in its randomized version with Haxorus as ID 00.

Edited April 14 by Moustiflor

[Moustiflor]

6 hours ago, Moustiflor said:

hi , Alright, I checked, but there’s no “layeredfs” folder in the program’s directory, and not in my folder with the romfs and exefs either. Where should I go to find this folder and delete it? 

Edit : When I make a change with PKNX and then close the app, it does create a folder with Pokémon Sword's title ID next to romfs and exefs. When I delete that folder, it does seem to remove the changes I made at that moment — but the Static Pokémon data still doesn’t reset. It stays in its randomized version with Haxorus as ID 00.

(Sorry to bother you ) Do you have any idea of what can i do ?

[Moustiflor]

Hello, it's me again. I've been trying several things over the past few days — uninstalling and reinstalling the game from scratch, dumping in raw format, avoiding dumping into the LayeredFS folder, trying to run PKNX directly from the SD card, and even deleting the LayeredFS folder using DBI.

But no matter what I do, the “Static Encounters” still show Haxorus as ID 00, along with other modified IDs that remain unchanged.

I’m out of ideas at this point, so I’m asking here again and hoping someone can help me, please.

21 hours ago, Moustiflor said:

hi , Alright, I checked, but there’s no “layeredfs” folder in the program’s directory, and not in my folder with the romfs and exefs either. Where should I go to find this folder and delete it?

 

[Moustiflor]

Even when a friend gave me her clean romfs and exefs, as soon as I load them in PKNX, the “Static Encounters” still show Haxorus with ID 00, along with other altered entries. I dont know what to do else 

On 4/14/2025 at 2:07 AM, Moustiflor said:

hi , Alright, I checked, but there’s no “layeredfs” folder in the program’s directory, and not in my folder with the romfs and exefs either. Where should I go to find this folder and delete it?

 

 

Edited April 15 by Moustiflor

[Moustiflor]

On 4/14/2025 at 2:07 AM, Moustiflor said:

hi , Alright, I checked, but there’s no “layeredfs” folder in the program’s directory, and not in my folder with the romfs and exefs either. Where should I go to find this folder and delete it?

sorry i solved it i was just dumb 

[MaoJinguel]

I need help with randomizing the items found on the ground, can someone help me by explaining what I need to do? I’ve already tried randomizing in the 'placement' section, but it didn’t work.

[Chariciard]

Hello, I am having some issues with editing learnsets in PLA.

1st thing is that I can't add moves to a pokemon learnset, if I try to do so the move just gets deleted when I change to a different pokemon, close the window to save, etc. and the 2nd thing is that even when replacing an already existing move for a different one in a pokemon's learnset when I try to teach said new move in game, the game immediatly turns the pokemon into a bad egg essentially making learnset editing impossible, wanted to ask if anyone knows how to deal with these issues?

[gravesl]

On 3/3/2025 at 10:54 PM, Kaphotics said:

 

im new to this rom stuff and idk what to do with this and no videos are helping

[Kaphotics]

35 minutes ago, gravesl said:

im new to this rom stuff and idk what to do with this and no videos are helping

Read the error message. The first paragraph describes what you need to do. Dump the ROM as well as the latest game patches. The program only supports an updated game.

[gravesl]

47 minutes ago, Kaphotics said:

Read the error message. The first paragraph describes what you need to do. Dump the ROM as well as the latest game patches. The program only supports an updated game.

yea sorry i figured it out but now its showing a gray screen or crashing so thats new

[Frzi]

Salut moi je bloque j arrive pas a tout randomizer du debut a la fin tout le jeux les dresseur les rencontres peut on m expliquer comment faire. Je ne sais pas quoi faire des fichier du github je sais pas ou modifier l apparition fin bref je suis completement quand a l utilisation de pknx. Je pense avoir trouver ou changer le tot de rancontre dans statistique encounter mais j ai 256 lieu a modifier il me dise c long a taper a la fin et je sais pas quel valeur je dois mettre dans la case nature pour avoir n importe quel pokemon. Si quelqu'un peut m'aider svp

[rinakun_takeda101]

I install the latest version PKNX and edting the Shiny Rate this image

Before saving:

 

Unfortunately when I save the edit fixed reroll count and re-opening it appears this one

After saving:

 

It goes back to default mode I try to edit and save again reopen and...... still back to default, Is the author of this editor have No plan to fix it?!

and yes I put to Always Shiny Mode but I prefer Fixed Reroll Count mode.

[Kaphotics]

3 hours ago, rinakun_takeda101 said:

I install the latest version PKNX and edting the Shiny Rate this image

Before saving:

 

Unfortunately when I save the edit fixed reroll count and re-opening it appears this one

After saving:

 

It goes back to default mode I try to edit and save again reopen and...... still back to default, Is the author of this editor have No plan to fix it?!

and yes I put to Always Shiny Mode but I prefer Fixed Reroll Count mode.

The editor does not try and detect what you previously changed it to. It gives you 3 options to apply.

[rinakun_takeda101]

That means the author of the editor doesn't want to fix the Shiny Rate in PKNX?!

not only me I have issue this tool but others are the same that not saving their shiny rate in fixed reroll count.

[Kaphotics]

2 hours ago, rinakun_takeda101 said:

That means the author of the editor doesn't want to fix the Shiny Rate in PKNX?!

not only me I have issue this tool but others are the same that not saving their shiny rate in fixed reroll count.

It's extra logic required to recalculate the exact selection that was previously applied. It's not a simple thing like 'read the value at offset and that is the re roll count'. The program is open source, you can submit a pull request with whatever improvements you feel are useful. 

[rinakun_takeda101]

Update: I edit the file again and set to ALWAYS SHINY mode save, close and test in the game and guess what it works wild pkmn is always shiny I guess Fixed Reroll Count are not work

and hopefully the author of the tool is considerating update and/or fix.

[zKinqJustinTW]

Hey, I'm having this issue with PKNX when I try to edit raid rewards. I'm using the most recent version available.The Game is Pokemon Shield

Edited September 16 by zKinqJustinTW