r4 clone, how to fix bridged connection?

[zxr750j]

So I bought a second hand 3ds, in it was a working r4 clone (came free with it) and I also got a non working r4sdhc-3ds-dsi-dualcore with it for free! It was a great deal btw.
I confirmed it non working (after trying countless woods, ys menus and so on).

Now I opened it up and looked at the connections on the pcb...
It looked liked the 6th and the 7th pin are bridged, pulled my multimeter and yes: bridged.
Now the question: should I get a hobbyknife and try cut/pry to unbridge it or put on some flux and apply some heat (problem is my iron is way to big for this small stuff)...

Suggestions?

 

[Nikokaro]

You might want to open another thread in the NDS section, where flashcarts are usually discussed.
For my part, I would advise you to use a knife with a thin, precision blade to separate those two pins, acting very gently and with accuracy.

Edit: Then when you will try it, don't use random firmwares anymore, just the right one! Otherwise you will permanently brick it for real.

 

[ghjfdtg]

Yeah, you should be able to fix this with a razor blade or similar. It's not the proper fix but since the bridge is so thin cutting should work.

 

[zxr750j]

Tried the knife route: successfully unbridged it

Now the search for the correct files begins...

 

[Jayro]

View attachment 320115

Tried the knife route: successfully unbridged it

Now the search for the correct files begins...

I'd try WOODR4 v1.64 first, as that's the last/best firmware. Y's Menu sucks donkey balls by comparison, so I avoid using it unless it's the only thing that works.

 

[zxr750j]

I tried wood, the card doesn't show up on a regular DSi, it does on Twilight, it goes form "Therese no game card inserted" to "Start Game Card" but without a Icon and it only shows white screens (with or without SD-inserted).

So I was thinking: If the main chip was bridged, they might not have programmed the firmware on the eeprom chip. I do have an eeprom flasher (cheap usb one, never used it). I think (hard to read) it's a winbond 25X16A, this should work? Now I only have to search for a correct bin file?I can try to dump the current contents of the chip without any risk I think (besides lacking any skills in this workfield).

I do have another option i think, the same method used to remove ntr-boot. https://3ds.hacks.guide/installing-boot9strap-(ntrboot). I don't see my exact card but this one might work but I don't have a 20XX version: "R4iSDHC Dual-Core 20XX from r4isdhc .com"

Maybe someone with this card can dump theirs? Or should I just try it...