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Hardware Homebrew Misc Firmware for GBC flashcart?

Starlark · 2026-06-25T01:49:54+00:00

Connect orginal Gameboy hardware to the internet through a web browser with GB-Link USB I am happy to share a hardware project I have been working on the past few years that allows your Game Boy to connect to the internet through your web browser on desktop or android with no software install required on the host device. Also supports sending multiboot homebrew from a web browser and dumping GB/GBC roms and restoring saves. Supports emulating GB Printer to print images from GB Camera as well as supported GB-Printer games. Full list of current games/applications found at https://gblink.io This project has had tremendous software upgrades this year and grown tremendosly thanks to to efforts of @Essometer , myself, and many others. I developed the v2 hardware out of a need for better accessibility/availability as well as new QOL features. All aspects of the project are open source and as this is an rp2040 board you can also diy your own adapter with a pi-pico and a link cable. This project is still developing and I look forward to what people will use this platform for in the future! Video demonstrating gen3 double battle over the internet. Firmware and DIY wiring guide avalible here https://github.com/GB-Link/GBLink-Firmware Crowd supply link for hardware. Please sign up to get updates when the campain starts and to register your interest! https://www.crowdsupply.com/gblink/gblink-usb-v2 For updated list of games/applications as well as in browser firmware upgrades/configuration visit the launcher. https://launcher.gblink.io Pokemon gen1-3 trading. Gen3 all 2p link cable modes including battle, trade, record mixing, co-op battle tower. Thanks to efforts from @Essometer Gen3 pokemon also supports online connection between hardware and emulator players through a fork of mGBA Advance wars supports both battling and trading custom maps Currently supported games: Tetris Dr. Mario Yoshi Advance Wars Advance Wars 2 Pokemon Red Pokemon Blue Pokemon Yellow Pokemon Silver Pokemon Gold Pokemon Crystal Pokemon Ruby Pokemon Sapphire Pokemon Emerald Pokmeon Fire Red Pokemon Leaf Green Tools: Sending muliboot homebrew Emulating GB Printer to print to your web browser Dumping GB/GBC carts using a GBA Dumping and restoring SAV files to GB/GBC carts using a GBA GB-Link Discord https://discord.gg/MQBu6Ec5BV GB-Link Github https://github.com/GB-Link GB-Link USB v2

Thread starter ChronoCrossfangirl2002
Start date Oct 18, 2024
Views 15,042
Replies 40

Ferris1000

Well-Known Member

Member

Level 12

Dec 3, 2025

pikapipi said:
I tried but get the error 0xD3 and have no idea what it means. I probably broke it. Or more exactly bricked it when using the krikzz files. Does anoybody know what the error 0xD3 means? Is it unreparable broken for people who can not reprogram it?

What is annoying is that I just purchased it and only needed the files because the shitty SD card broke the moment I wanted to copy it.
I will probably have to send it back and get another one.

Post automatically merged: Dec 1, 2025

Edit the Flashcart makes a phasing humming sound. Like broken transistors probably.