Neo Geo Mini

[shinrukus]

Thanks, but I do wonder why the UniBIOS is so slow. What's under the hood of this system?

I dont think its the system so much as the emulator. MVSPSP handles Unibios just fine, but its just that, it handles Unibios when Unibios is expected. I think because something in Unibios requires additional handling by the emulator, when it doesnt expect it, you get this result. In this case, in the Int version, its actually faster than it is on the Japanese version, but the int version is still expecting neo-epo.bin to do neo-epo.bin stuff, not unibios stuff lol

 

[jidatui]

The replacement of 10k with 5k did not work for the international version. Finally I figured out that it is the same as the Japanese version. Only the 10k controlling the left direction should be replaced with 14k. I also uploaded a video on bilibili.

 

[subcon959]

The replacement of 10k with 5k did not work for the international version. Finally I figured out that it is the same as the Japanese version. Only the 10k controlling the left direction should be replaced with 14k. I also uploaded a video on bilibili.

Can you show a pic of the correct one to replace?

 

[subcon959]

@jidatui or anyone else, the pcb on the international version has a lot more resistors than the japanese so can you indicate which is the correct one to replace for just left movement?

 

[jidatui]

The resister in the middle should be replaced with 14k or 13k.

 

[ArugulaZ]

Jida, can I ask what system that is in your avatar?

 

[jidatui]

All the systems show the same bug. I am now using the 88 games version released by Mr. Sinrukus.

 

[WillFarnaby]

Hi guys,

I will receive my machine (international) tomorrow and read this thread. It looks like you already did a lot of work and research, thanks for that! But as far as I understand the controller issue still remains. I would love to add additional games and especially emulators to the NGM, even though this might risk damaging the machine. Can you please confirm that it works normally with the external controller (which I also ordered). And do you know how likely it is to damage the machine? Is there an image available for the extra Neo Geo games and the emulators? Sorry for all the questions.

 

[VmprHntrD]

I see someone else woke this up days ago and I was thinking the same. I've got one of the international units and I've been wanting to correct a wrong for a long time and make a better game list out of this since they hid some real gems split between both regions. I don't care to add other consoles, handhelds, whatever wonk people are cracked out over. I'd just like to make a better list of legit stuff, perhaps even just strip the thing and add the 30 legit boards I own (have a MVS 2 slot cabinet) for a handheld version of my big boy.

 

[evers]

hello does the hack work with neogeo mini haohmaru version ?

 

[xinistri]

If anybody has a copy of the original International vendor.img I'd be extremely grateful if you could please provide it to me. I want to revert back to the original 40 games, menu style as well as the English bios.

TIA

 

[legolas119]

Hi, I would like to add only neo geo games. Can anyone help me with a quick guide? I don't want to add additional emulators and games, only neo geo.
thanks

 

[silverthornne]

I created an account just to thank Jidatui. His fix worked for both my International and Japanese Neo Geo Minis! I have different images on them and both got the left joystick blues after the hack.

I used a 13k ohm resistor bought at Amazon. If you're new to soldering, please watch some SMD soldering tutorials before proceeding. I did not remove the existing solder after removing the original resistor. I just heated it up a bit, pulled it out with tweezers and then installed the new resistor using the existing solder

 

[Cozmic]

@silverthornne now that is good news. Can we then carefully conclude that replacing the resistor as mentioned above, should fix the problem for everyone?

 

[Carlanga]

I bought a ngm yesterday from amazon on the cheap, will have to wait almost two weeks to get it, but I was reading on the issue of the joystick drift since I'm considering hacking it and have you guys considered the brand/quality of USB C cable you are using? Meaning, many cables aren’t compliant with the USB-C specification and have a bad resistor value and can cause hardware damage or it could be an adapter issue. Thus causing a spike and damaging hardware. I also wonder if one that is 3.0 vs 2.0 or even if its 3A would make difference in the issue.

 

[ArugulaZ]

Got one of these myself... at $30 it was hard to resist. Not sure if I'll hack it, but in all honesty I wish there were a few games they had included.

 

[ArugulaZ]

The resister in the middle should be replaced with 14k or 13k.
View attachment 185291

What model of resistor would I need for this?

 

[shinrukus]

 

[shinrukus]

 

[shinrukus]

So just to let you guys know, we’ve officially fixed the joystick bug via software... if you are having issues with your NGM, and haven’t used resistors to fix, let me know, I’ll provide you a fix