ESP32 board
Joins the Switch's wireless. ESP32-S3, C6, C3 or the original ESP32.
The Switch's wireless is encrypted with keys from the console. Four of them go from this file to the board over USB. Nothing is uploaded.
Details
- Chip
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- Firmware
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- Console
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- Switch’s room
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More options
Installing again keeps the stored keys. Erasing everything does not.
GB-Link adapter
Plugs into the Game Boy Advance in place of a Wireless Adapter, with a Game Boy Color link cable. A Game Boy Advance cable does not work here.
- Put the adapter in update mode
- Let the browser use it: click the button and pick RP2 Boot
- Write the firmware
- Reconnect
Details
- Firmware
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- Wireless adapter mode
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- Connected over
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More options
Install a .uf2 of your own:
By hand: hold BOOTSEL while plugging the adapter in, then copy the firmware file onto the RPI-RP2 drive that appears.
Play
Let this page carry the link, or connect the two boards with three wires.
Ruby and Sapphire have no wireless. This page links them by cable and turns that link into the Switch's wireless, so both boards stay on USB. Trades and single or double battles, with the Switch leading.
Pokémon from Ruby, Sapphire or Emerald may not be tradable out of the Switch's game until it has the National Dex and has finished the Sevii Islands story (Cerulean Cave shows on its town map). Only while this page carries the link, not with the boards wired. FireRed and LeafGreen need no bypass: leave it off for them.
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Through this computer
Both boards on USB, this page in between. Keep the tab in view while you play.
Connect both boards first.
- To the adapter
- 0 frames
- From the adapter
- 0 KB
- Board restarts followed
- 0
Standalone
Three wires between the boards, powered from anything. This page is not needed while you play.
Connect the board in step 1 to see which of its pins go to the adapter's GP8 and GP9.
| ESP32 board | GB-Link adapter |
|---|---|
| GP8 | |
| GP9 | |
| GND | GND |
On the consoles
- Switch: upstairs in a Pokémon Center, Direct Corner, Trade Center or Colosseum (single or double battle), become the leader.
- Ruby or Sapphire, with the adapter on the link cable: upstairs in a Pokémon Center, talk to the attendant at the middle counter to trade, or the left one for the same kind of battle.
- The page joins the Switch's group once the Game Boy Advance has linked. Accept the join on the Switch, then walk to the trade table, or onto the battle spots, on both consoles.
- Leave the room on both consoles when you are done. After that the board restarts and is ready again about ten seconds later.
- Switch: upstairs in a Pokémon Center, Direct Corner, Trade Center or Colosseum, become the leader.
- Game Boy Advance, with the adapter on a Game Boy Color cable: pick the same thing and join the group. The Switch shows up after a few seconds.
- Or the other way round: become the leader on the Game Boy Advance and join its group on the Switch.
- After you leave the room, the board restarts and is ready again about ten seconds later.
Trade
Trade with the Switch from this page. The board from step 1 is all it takes.
The pool picks the Pokémon you get, and what the Switch gives goes into the pool for the next person. See what is in it at pokemon.gblink.io/pool.
Your own party as .pk3 files, kept in this browser. What the Switch sends takes the place of what you gave.
The Switch
The pool
Once you are both at the trade table, click a Pokémon to offer it. ↓ saves one as a .pk3 file, ↑ replaces it; dropping a file on a slot does the same.
The pool's Pokémon shows up here once you are both at the trade table. Accept trade offers it, before or after you pick yours on the Switch. Cancel trade declines it. For a different one, leave the table and sit down again.
Kept here
The pool did not confirm these trades, so what the Switch gave is kept here. ↓ saves one as a .pk3 file.
On the Switch
- Upstairs in a Pokémon Center, Direct Corner, Trade Center, become the leader.
- Press Connect here, then accept the join on the Switch.
- Sit down at the trade table.
- CANCEL at the table takes you back to the room; sit down again for another trade. Leaving the room ends the visit.
More options
Keep the tab in view while you trade: a hidden tab runs too slowly for the game.
A Pokémon that arrives takes the slot of the one that left. Offer it again to trade it straight back.
Online with Celio
Game Boy Advance and emulator players connect at celio.gblink.io; another Switch player uses this page.
Session
Waiting for the other player…
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How it works
- Create a session and send its Session Id to the other player, or join theirs. On a Game Boy Advance with a GB-Link, or in an emulator, they use celio.gblink.io. Both press Start.
- The Celio server decides which side leads. The page then says whether to lead a group on the Switch or to join the group it opens, and in that case asks which room.
- On the Switch: upstairs in a Pokémon Center, the Direct Corner, then the Trade Center or the Colosseum. The other player goes to the same room.
- Leaving the room on both consoles ends the session. Keep this tab in view while you play.
Options: National Dex bypass, Celio server
Pokémon from Ruby, Sapphire or Emerald may not be tradable out of the Switch's game until it has the National Dex and has finished the Sevii Islands story (Cerulean Cave shows on its town map).