Hi, I have a GBxCart RW + FlashGBX, and I'm trying to write an emulator .sav to a batteryless SRAM repro cart (FlashGBX identifies it as: Save Type: Unlicensed 512K SRAM 64KiB, Cartridge Type: 2006_TSOP_64BALL_6106 with W29GL128SH9B). My emulator save is 131088 bytes ("Pokemon - Emerald Version.zip"; 128KB + 16 byte header I think). Every attempt to write it via FlashGBX ends in either "save file was erased due to corruption" or it reverts to a previous save. I also tried patching a fresh Emerald ROM with the gbarompatcher website (SRAM Batteryless patch) and writing that instead, same result. I dumped the SRAM after making a test save on the cart and ran it through Python to check the sector structure, the magic bytes don't match standard Emerald format (expected 0x08012025, getting values like 0x01006f4f). PKHeX also rejects the dumped .sav with "unsupported file type/size" even though it's 65536 bytes. ("FreshPatched.zip" is a rom and save dump from after I wrote the patched rom to the cart, and "TestSave.zip" is a save on said patched rom up to the point of acquiring a starter, and then saved at Route 101. I progressed to the same point for "OG.zip") Writing to the OG, Patched, and Test-Saved roms through FlashGBX and injections all ended in errors, regardless of how many times I tried to read the bytes and find the save point. At some point in the process, it started saying that the SRAM size was 64KiB even though I could have sworn it was saying 128KiB for a while but then it changed and I don't know how or why that might be. Maybe I'm just going insane. I've been doing trial-and-error for two days now. Questions: What save format does a batteryless SRAM cart like this actually use, and is it compatible with a standard emulator .sav at all? How can I write my save properly to a cart like this? Is there a tool to convert/inject an emulator save into the format this cart expects? Thanks in advance.

PocketNES update, assisted by AI

Krem Quay · 2026-05-13T13:11:26+00:00

Thanks to AI like Gemini and Claude Opus, a person like me who doesn't know anything about coding can add more mappers to PocketNES. Take a look: https://github.com/GamingFanboy365/pocketnes

How to convert gba mid music to gsf or minigsf

ZeroAlvein

New Member

Newbie

Level 1

Aug 27, 2025

I can't believe i am only one that have opposite issue to everyone
Everyone want to convert gsf/minigsf music ripped from gba game to midi
I have midi music which i want to convert either to gsf or minigsf
Or how to rip it directly to gsf/minigsf?

I am not asking any1 to hold my hand i am asking for link to some info how to do it

Because of keywords i google i get vice versa of what im looking for
All search results in google are like i said gsf/minigsf to midi where i want opposite

This is my 2nd day trying to find solution

I ripped music from Shantae Advance using GBA Mus Riper
I made bat file put in it this

Where xx is name of rom file
And put that file inside mus riper folder and just run it and it ripped music perfectly

But everything is in mid format where i was expecting either gsf or minigsf

Anyway for someone who want to convert it to mp3
Now you need Keppy MIDI converter
Just load your midi files there
And next click Actions > Open SoundFonts/VSTs Manager

And here you just dra and drop your sf2 file mus riper created which will be in folder with all your midi files

Anyway
I did try rom2gsf
But it created single gsf file with only 1 track however it was over 4mb

So i assume rest of tracks are there in it i just need to do something?

I really feel like im missing something obvious here

Can someone like give me link to tutorial or something?
I did use search function on this site not to mention google it
But i cannot find anything that would help me get proper gsf/minigsf or convert midis i have to any of that format

GBA How to convert gba mid music to gsf or minigsf

New Member

Similar threads

Popular threads in this forum