Uploaded February 2023 | Updated September 2026, 1 week ago
I played 2 rounds and gave up.
--
Twitter: twitter.com/Dax009YT
Website: https://dax009.ink
Discord Server: discord.gg/Zkp72CE
Nintendo Switch FC: SW-5602-5463-6615
Nintendo Network ID: YTDax009IsBack
I played 2 rounds and gave up.
--
Twitter: twitter.com/Dax009YT
Website: https://dax009.ink
Discord Server: discord.gg/Zkp72CE
Nintendo Switch FC: SW-5602-5463-6615
Nintendo Network ID: YTDax009IsBack








![How to hack Splatoon 1 with JGecko U | Dax009
The sequel to the sequel of the tutorial with the high voice.
Originally uploaded 11/14/22, claimed by Nintendo TWICE, so I had to reupload it with any Splatoon gameplay removed.
Splatoon gameplay showcase: https://youtu.be/kBkryhG47TQ
Update: To launch TCPGecko, you will need to use Tiramisu. If you dont already have it setup, but have Aroma set up, follow this guide: https://wiiu.hacks.guide/#/aroma/finalizing-setup?id=booting-tiramisu-optional
Disclaimer: DO NOT go to the creators of JGecko U/the codes/etc for help with my guide. They are not involved in the creation of the guide, so please dont inconvenience them.
Wii U Homebrew Guide (REQUIRED for this tutorial to work, avoid using video guides to homebrew your Wii U as well): https://wiiu.guide
Java (Windows): https://www.java.com/download/ie_manual.jsp
Java (All Operating Systems, for macOS tutorial): https://www.java.com/en/download/manual.jsp
Splatoon HaxPack by SHRL-Red (JGecko U XML): https://github.com/SHRL-Red/Splatoon-HaxPack
JGecko U by BullyWiiPlaza: https://github.com/BullyWiiPlaza/JGeckoU
TCPGecko: https://axdaxis.dev/files/misc/TCPGecko_12-23-25.zip or https://drive.google.com/file/d/1fbfTG5bxgnuO6MSGw6tqXdCpWInmUt-K/view
[Some people have reported that theyre getting some type of error saying something along the lines of JGecko U version does not match the version of TCPGecko installer or something like that. Im not sure whats triggering that error, as Im unable to replicate it. If youre getting this error, try going to the wiiu folder in your SD card, then go to the apps folder, find the TCPGecko folder, open it, delete tcpgecko.elf, and then download this version (https://github.com/BullyWiiPlaza/tcpgecko/raw/master/tcpgecko.elf) and put it in the same location. This may or may not work.]
Commands to run on Linux (commands are in the quotes, remove the quotation marks before running):
java -version (Checks your Java version. This should come up with something like OpenJDK if Java is installed.)
sudo apt install default-jre (Installs the Java Runtime Environment. Required for JGecko U)
URLs that you may need to exempt from your Antivirus (Windows):
bullywiiplaza.website
raw.githubusercontent.com (Remove exception after downloading JGecko U for safety)
Testing done on:
Java 8 Update 351 (excluding Linux)
Windows 10 22H2 (Most of Windows tutorial)
Windows 11 21H1 (Windows Java installation tutorial)
macOS Big Sur 11.6.5 (macOS tutorial)
Ubuntu 22.04.1 LTS, OpenJDK 11.0.16 (Linux tutorial, although it should work on Linux Mint)
Wii U Deluxe 32GB, Tiramisu CFW
Chapters/Timestamps:
0:00 Introduction/Requirements
1:05 WINDOWS Step 1 - Check for Java
1:31 WINDOWS Step 2 - Install Java
2:49 ALL OS Step 1 - Downloading TCPGecko and JGecko U
3:31 WINDOWS - Antivirus Exception URL 1 (In some cases)
3:59 WINDOWS Step 3 - Download/Run JGecko U
4:34 WINDOWS - Antivirus Exception URL 2 (In some cases)
4:49 WINDOWS Step 4/LINUX - Downloading the XML file and Renaming (Part 1)
5:05 WINDOWS - File Extensions Reminder
5:37 WINDOWS Step 5/LINUX - Downloading the XML file and Renaming (Part 2)
6:33 macOS Step 1 - Introduction and Ventura disclaimer
7:00 macOS Step 2 - Check for Java
7:10 macOS Step 3 - Install Java
7:24 macOS Step 4 - Download JGecko U
7:46 macOS Step 5 - Running JGecko U
8:33 macOS Step 6 - Downloading the XML file and Renaming
9:24 Linux Step 1 - Introduction and Disclaimer
9:43 Linux Step 2 - Check for Java using the Command Line
9:53 Linux Step 3 - Installing Java using the Command Line
10:18 Linux Step 4 - Download JGecko U
10:34 Linux Step 5 - Making JGecko U Executable and running it
11:08 Linux - Disclaimer 2 and timestamps for codes
11:19 ALL OS Step 2 - Extract TCPGecko to SD
11:52 Wii U - Running TCPGecko
12:20 ALL OS Step 3 - Running JGecko U and sending codes
12:49 Removed gameplay notice/additional information
13:47 Outro
General stuff that may fix your problem:
1: Is your Wii U connected to the internet?
2: Is your PC connected to the internet?
3: Is your Wii U and PC connected to the same network/router?
4: Is Custom Firmware loaded?
5: Did you load up TCPGecko on your Wii U?
6: Is Splatoon loaded up?
7: Did you connect your Wii U to your PC?
8: Did you follow all of the steps in the video?
If you answered no to any of these, go back and double check these.
Twitter: https://twitter.com/Dax009YT
Website: https://dax009.ink
Discord Server: https://discord.gg/Zkp72CE
Nintendo Switch FC: SW-5602-5463-6615
Nintendo Network ID: YTDax009IsBack
Music:
Shellfie - Splatoon
Alterna Mission 5 - Splatoon 3
Alterna Site 6, Phase 4 - Splatoon 3
Blitz It! - Splatoon 2
Pandora Palace - DELTARUNE Chapter 2
DK Summit - Mario Kart Wii
Checker Dance - DELTARUNE Chapter 1 How to hack Splatoon 1 with JGecko U | Dax009](https://i.ytimg.com/vi/gaLiblOTVH4/mqdefault.jpg)

