3ds CFW repair online

[zkekz21]

Seen a few of these errors with google. most are within a few months back. Do you have a nand backup of your console? One mention was that it took that to get it back working.


*Adding in pages for this error.

https://gbatemp.net/threads/3ds-black-screen-and-no-home-menu-hard-one.613499/

https://gbatemp.net/threads/a-question-about-a-non-issue.621811/

Yes I do have a nand backup

 

[PabloMK7]

This is a bug in Luma3DS, which will be fixed in a future release. For now use this build, it's just the latest commit of the plugin loader branch. Place the boot.firm file inside the attached file in your SD card. If it still displays the error let me know

 

[zkekz21]

This is a bug in Luma3DS, which will be fixed in a future release. For now use this build, it's just the latest commit of the plugin loader branch. Place the boot.firm file inside the attached file in your SD card. If it still displays the error let me know

Here is where I am now, but I think my top screen is malfunctioning, because it flashes this message the shuts off.

 

[Dionicio3]

Here is where I am now, but I think my top screen is malfunctioning, because it flashes this message the shuts off.View attachment 343795

you definitely have some hardware damage, not much we can do about that unfortunately

 

[SylverReZ]

you definitely have some hardware damage, not much we can do about that unfortunately

The only way you can fix that is by buying a replacement screen.

 

[zkekz21]

The only way you can fix that is by buying a replacement screen.

Thanks, let me get that fixed

 

[fli_guy84]

Thanks, let me get that fixed

Did you ever figure out what is the problem? My N3DS is exhibiting the same "MCU FW" error message.

 

[lone_wolf323]

Did you ever figure out what is the problem? My N3DS is exhibiting the same "MCU FW" error message.

Do you have a recent nand backup of your console?

 

[fli_guy84]

Do you have a recent nand backup of your console?

I kinda do, but it's a bit complicated.

I have two units of N3DS. One has blue light + black screen issue (Unit A, no CFW) and the other one is working normally (Unit B, CFW Luma 11.0).

Unit A motherboard works OK on unit B's console, but Unit B's motherboard exhibits this error on Unit A's console.

So technically I can just dump Unit A's NAND.

BTW, Unit A is still stuck with FW 9.4, and Unit B is on FW 11.16. I'm not sure this is related to the issue.

Edit: Turns out Unit A's bottom screen was broken. Ordered a new replacement screen and now the console is good.