About This File
⚠v1.1.0 caused an issue where empty party slots filled with bad eggs. This has been fixed as of v1.1.1+. This is a non-permanent data corruption issue and the bad eggs can be removed with PKHeX or by installing PKSE v1.1.1+ and saving. This is due to an oversight where I was setting the empty slots with 0 or empty data instead of encrypting the empty slot with an encrypted blank. This logic was already in-place with empty box slots, but I failed to copy over the logic to empty party slots. I had no saves with empty party slots and did not catch it.⚠
PKSE is an open-source Pokémon save editor that runs directly on a hacked
Nintendo Switch console. It reads, edits, and writes save files in place on
the console, so no PC, save transfer, or external tooling is required.
SUPPORTED GAMES
Gen 3: FireRed / LeafGreen
Gen 7: Let's Go, Pikachu! / Eevee!
Gen 8: Sword / Shield, Brilliant Diamond / Shining Pearl, Legends: Arceus
Gen 9: Scarlet / Violet, Legends: Z-A
Per-game save version and DLC detection is handled automatically.
CROSS-GAME BANK
PKSE includes a native storage bank shared by every supported game. A
Pokémon deposited from one game is converted into the destination game's
format on withdrawal, preserving origin data: OT, trainer IDs, met
location and level, IVs, nature, and PID.
EDITING
Party and box Pokémon: species, level, stats, IVs/EVs (AVs in Let's Go),
nature, ability, moves, held item, ball, OT/met/origin data, shininess,
gender, and ribbons. Trainer info and item pouches are editable with
per-game item and count limits enforced.
A Pokémon creator builds an entity from scratch in any supported game's
format, with legal values highlighted.
LEGALITY
A legality checker flags illegal values as you edit. It is informational
only — it never blocks an edit or silently alters your data. Encounter
matching is not yet implemented, so the checker should not be treated as
a substitute for PKHeX's legality analysis.
SAVE HANDLING
Backup and restore are performed on-console with retained backup history.
Users are strongly encouraged to take a backup with Checkpoint or an
equivalent tool before first use.
INTERFACE
HOME-style UI built with NanoVG, 256px HD sprites, full touch controls,
and scrollable storage and lists.
REQUIREMENTS
A Nintendo Switch running custom firmware with access to the Homebrew
Menu. Place PKSE.nro in sd:/switch/. Tested on firmware 22.5.0. PKSE
operates only on save data already present on your own console.
CREDITS
Built using PKHeX as a reference throughout — much of the format and
structure knowledge behind this tool comes from that project and the
documentation work of this community.
Licensed under AGPL-3.0 license. Source and releases:
https://github.com/kiasta/PKSE
Edited by Kiasta
Updated version
What's New in Version 1.1.2 See changelog
Released
PKSE Release 1.1.2 - Release Notes
If saving to your game failed with a "Failed to copy" error and your edits disappeared, this build
is for you. There are steps at the bottom for checking whether it works now.
Fixed - save writing
- Fixed an issue where writing your edits into the game failed completely if your save did not contain every file the editor expected to find. Not every Sword/Shield save has a `poke_trade` file — it holds a Surprise Trade result that has not been collected yet — and the editor treated its absence as a fatal error, abandoning the whole save and discarding your edits.
- Fixed the same failure on Brilliant Diamond/Shining Pearl, where a save may have no `Backup.bin` beside its `SaveData.bin`.
- Fixed an issue where Legends: Arceus never wrote its second save file back to the game.
- Scarlet/Violet, Legends: Arceus and Legends: Z-A now write their companion save files back to the game alongside the main one, rather than the main one on its own.
No save data was ever lost or damaged by this. The write was abandoned before it was committed
to the console, so your game save was left exactly as it had been — the edits simply never arrived.
With version 1.1.2:- Download