Homebrew Disabling 3DS LED Lights with Homebrew?

[Sono]

1st. What is an MCU brick?

Two things can happen:

1. the MCU is in an invalid state, preventing you from booting
2. the MCU_FIRM is overwritten by sending garbage data to the MCU

It may be possible to recover from the first one, but you can't recover from the second, you would need to replace the main board for that.

2nd. It can't even be recovered by a hardmod?

No, doesn't matter what.

 

[PabloMK7]

1st. What is an MCU brick?

2nd. It can't even be recovered by a hardmod?

Sorry, I just love to learn about these sort of things!

Sent from my Browser on a New 3DS XL with A9LH

The MCU is in a different chip, that's why you can't use a NAND backup to restore it. (afaik, it controls power button, leds, home button...)

 

[Sono]

For people who are interested, I uploaded the sooscode with a compiled example to my Github repo: https://github.com/MarcuzD/MCU_examples

https://github.com/MarcuzD/MCU_examples/raw/master/LED_dim/LED_dim.cia

 

[SomeGamer]

For people who are interested, I uploaded the sooscode with a compiled example to my Github repo: https://github.com/MarcuzD/MCU_examples

https://github.com/MarcuzD/MCU_examples/raw/master/LED_dim/LED_dim.cia

Brick risk? And what's the difference between RGB_rave and MCUbricker?

 

[Sono]

what's the difference between RGB_rave and MCUbricker?

Nothing at all, just moved it to the directory, and renamed it It generates the exact same cia, just with a different filename.

 

[SomeGamer]

Nothing at all, just moved it to the directory, and renamed it It generates the exact same cia, just with a different filename.

Oh, OK, it's just strange because the md5 doesn't match.

 

[astronautlevel]

Oh, OK, it's just strange because the md5 doesn't match.

Maybe differences in the SMDH? (Disclaimer: I haven't looked yet)

 

[uyjulian]

So, you can't send any command to the MCU after brick? Is it possible to replace MCU with another one, or it's mainboard specific?

Also, what about custom MCU firmware?

 

[Sono]

So, you can't send any command to the MCU after brick?

Well, since the 3DS doesn't power on, ye... :/

Is it possible to replace MCU with another one, or it's mainboard specific?

Good luck reballing the tinyest contacts possible

Also, what about custom MCU firmware?

I have seem the datasheet for the MCU... mother of gawd...

 

[Halvorsen]

1st. What is an MCU brick?

2nd. It can't even be recovered by a hardmod?

Sorry, I just love to learn about these sort of things!

Sent from my Browser on a New 3DS XL with A9LH

MCU brick, basically confusing the MCU by sending it garbage data (usually when it gets too much data than it can process). It can't be fixed as the MCU is pretty much on par with the bootrom with how soon into boot it is run. Since the MCU firmware is ran before the NAND is even initialized, restoring the NAND won't do a thing.

Usually this can be solved with a reflashing of the MCU firmware, but I think this is more difficult than a normal hardmod.

Sometimes the MCU becomes fried and you need a new motherboard.

 

[SomeGamer]

Sometimes the MCU becomes fried and you need a new motherboard.

What? I'm almost certain this isn't possible with only software instructions.

 

[Skyshadow101]

MCU brick, basically confusing the MCU by sending it garbage data (usually when it gets too much data than it can process). It can't be fixed as the MCU is pretty much on par with the bootrom with how soon into boot it is run. Since the MCU firmware is ran before the NAND is even initialized, restoring the NAND won't do a thing.

Usually this can be solved with a reflashing of the MCU firmware, but I think this is more difficult than a normal hardmod.

Sometimes the MCU becomes fried and you need a new motherboard.

Do people even know how to do that MCU hardmod?

Sent from my Browser on a New 3DS XL with A9LH

 

[astronautlevel]

Do people even know how to do that MCU hardmod?

Sent from my Browser on a New 3DS XL with A9LH

There are some, but the information is private.

 

[Skyshadow101]

There are some, but the information is private.

I must find one. I need that MCU hardmod. I need to be safe from EVERYTHING. I want to be able to change my led color without worrying about bricking anyway.

Do you know any people who knows how to do it and will take a request?

Sent from my Browser on a New 3DS XL with A9LH

 

[Halvorsen]

I must find one. I need that MCU hardmod. I need to be safe from EVERYTHING. I want to be able to change my led color without worrying about bricking anyway.

Do you know any people who knows how to do it and will take a request?

Sent from my Browser on a New 3DS XL with A9LH

Check the hardmod installer page, and their proof of work.

 

[astronautlevel]

Do you know any people who knows how to do it and will take a request?

Yes, I know someone who can do it, but no, they don't do it for other people.

 

[Skyshadow101]

Yes, I know someone who can do it, but no, they don't do it for other people.

Oh, well, it's fine! I will just see if I stumble on one.

--------------------- MERGED ---------------------------

Check the hardmod installer page, and their proof of work.

I don't think there is anyone on there who does MCU hardmods on there. ;-;

 

[Halvorsen]

Oh, well, it's fine! I will just see if I stumble on one.

--------------------- MERGED ---------------------------


I don't think there is anyone on there who does MCU hardmods on there. ;-;

If it's not an MCU mod, then they must have replaced the physical light. Cool.

 

[Skyshadow101]

If it's not an MCU mod, then they must have replaced the physical light. Cool.

Still want that hardmod, but like I said, I will have to stumble on someone, or learn how the motherboard works and do it myself.

 

[RealityNinja]

I have tested that to disable the power LED, works fine with me: https://www.reddit.com/r/3dshacks/comments/53mwvs/bipolar_turn_off_your_power_led/
(it displays also the % state of the battery charge level :-p)