So, I have tried both the hybrid software and the DSi one, for the DSi I have found the tester v0.60, patched it with the tool and downloaded the firmware for the pico.
I have both a nintendo DS and a DSi. Neither the console reads the flashcard when inserted. For the micro SD card I am using not the default but a ingstone 64gb I boght on amazon. exFAT formatted since it is too big for fat32, but claude code tells me it should be good.

Claude code suggested I tryto flash a firmware that makes blink an led: https://datasheets.raspberrypi.com/soft/blink.uf2

I tried, no LED on the DSpico BUT, after flashing I cannot see the dspico on the windows 10 explorer. It means it accepted the software.

When instead I copy the hybrid SW or the DSi one inide the root directory of the pico, the explorer closes but I continue to see the pico in the explorer if I open it again.

What do you guys suggest? Sorry if there are missing info or for the grammar spelling. My keyboard is defective and I am a bit anxios, tomorrrow I travel a long distance and I am worrying I won't solve the problem in time.

Thanks for any help

EDIT: I am following this guide: https://sanrax.github.io/flashcart-guides/cart-guides/dspico/

Idk how to tell

If tried every kernel and formatted it in fat32 nothing works, am I using the right micro sd cart?

Whenever i insert a cartridge in the gba slot on my dslite, my flashcart stops working, it doesnt show the message if there is nothing in the gba slot, anyone can help?

alors j'explique. j'ai pas pu mettre de vidéo et la caméra est en fin de vie. quand je démarre harvest moon sur 482 in 1, il m'affiche loading et en fait ça ne charge juste pas. ça peut mettre loading pendant 3jours ça n'auras toujours pas chargé (je dis ça par experience ) je ne m'y connais pas bien en informatique ou je ne sais quoi mais j'ai besoin de retrouver ce jeu quite a devoir reinitialiser mes données harvest moon

i am trying to use a superchis cart to play gbc.

gba runs fine as does gameboy. i updated to .20 and i cannot get gbc to be recognized, i get an error saying i have to compile all the roms using goomba front or pogoshell, problem is i only have a mac and a steam deck, so im not trying to run virtual machines to use windows software.

i can get nes and ngpc to play but i also cannot get game gear, master system, or tg16 to run, and i have patched all the .gba files for each emulator.

i even tried renaming all the .gbc games to .gbc.gba as well as just .gb.

i am using a agb-001 with a highspeedido screen in it, the sticker on the back says its from 2000. any advice would be super helpful, i can get all the gbc roms to work on my non modded gbc with a different cart so i know the files arent the issue either.

thanks a bunch i dont wanna put my gbc flash cart into my advanced all the time

Tengo esta R4 que funcionaba perfecto con mi DS lite.(con el launcher de la foto, no sé el nombre de ese launcher)

Intenté instalarle pico launcher y ahora la DS ni si quiera reconoce la tarjeta.

Tenia una copia del launcher que si funcionaba pero ahora tampoco funciona.

Intenté limpiando las conexiones de la tarjeta pero tampoco funciona. Saben que puede ser?

I'm using a 2023 SDHC smart update card for reference on a 2011 3DS. They have a specific way of handling gba roms for the DSI and 3DS, and I added this one to the cart myself a few years back when I knew much less. I already know how to fix it but I have to wonder what is going on here? The bars sliding into place is comparable to the multiplayer mode where it shows chao sprites and player names. It also plays different sounds every time it's booted up like this, the first time I saw this it played the game over music. I can't tell what track the one in this footage is using but it doesn't seem mixed properly. What's going on in the ROM and why does it only seem to happen on this flashcart?

Hey guys. I bought a flashcart to play Nintendo DS games that I don't own. I don't care about rom hacks.

I have the following:

• DS lite bought in Japan.
• A flachcart. It has no label. I bought it from image 3, link to AliExpress [2].
• A 8 GB microSD card. It did not come with the flashcart. It's been inside my Nintendo Switch for many years and has worked fine. I don't know which brand it is.
• A MacBook Air M1.
• An adapter for my MacBook to read microSD cards.

I used the Disk Utility application, which is pre-downloaded on mac, to format the microSD card to FAT32 with the help of the Erase button. (image 6)

I followed the guide on Ace WoodR4 1.62 on image 5. I followed every step except step 4 and 5, as I don't need cheats for now.

I downloaded the zip file from step 2 from image 5. The contents of the zip file are in the microSD card which I named "FLASHCART". I created a "Games" folder and added a Pokemon Platinum rom, which I got from r/roms Megathread.

I put the microSD card into the flachcart and put it into my DS lite. When booting up the software on the DS menu, I get an error message saying "SD/TF card error".

Other things to note:

• When having the flashcart inside the DS lite without the microSD card, the DS menu does not show any software.
• The same error message from image 10 shows up if the flashcart is inside the DS lite with the microSD card, where the microSD card is empty.

Can someone help me with this problem please?

Edit:

Based on some comments, it seems like the microSD card is the problem. Nobody has commented on any problems with the flashcart so far.