*=* Error On Switch OLED! (Can't find much info about it)

[Joeorisit]

I recently modded my switch OLED with a Picofly mod chip, and now it is throwing the error code *=* which I'm told means "No eMMC block 0 read (eMMC init failure?)". I don't exactly know what this means it seems to not be widely documented. I have already re-done the DAT0 point and made sure it was clean and all the other joints were soldered well. I am getting correct diode readings from everything as well.

Not sure where to start. Any help is appreciated!

Thanks!

 

[Hayato213]

https://github.com/Ansem-SoD/Picofly

Error code list.

 

[Joeorisit]

https://github.com/Ansem-SoD/Picofly

Error code list.

Thanks for the response, but the error code I am getting is not on that list. I'm also trying to find out what I need to do to fix it?

 

[Joeorisit]

https://github.com/Ansem-SoD/Picofly

Error code list.

Thanks for the response, but the error code I am getting is not on that list. I'm also trying to find out what I need to do to fix it?

 

[Hayato213]

Thanks for the response, but the error code I am getting is not on that list. I'm also trying to find out what I need to do to fix it?

*=* No eMMC block 0 read (eMMC init failure?)

Thread 'Picofly OLED Error *== or *=*'

Jul 28, 2024

Hey All,

I am having a issue with this install, I have done plenty OLED's but this one is causing me a lot of issues. I can't seem to get the modchip to glitch the console it just boots straight into OFW and doesn't glitch it. The error looks like *== or *=* but I provided a video anyways. Any idea which solder could be causing this?

I am not sure which point is causing this, any help is appreciated. Sorry for poor picture quality.

• Megradome
• Replies: 8
• Forum: Nintendo Switch

According to this.

 

[Joeorisit]

You sure you got the error code correctly.

Yes I will send a video, one moment.

Post automatically merged: Jan 22, 2026

*=* No eMMC block 0 read (eMMC init failure?)

Thread 'Picofly OLED Error *== or *=*'

Jul 28, 2024

Hey All,

I am having a issue with this install, I have done plenty OLED's but this one is causing me a lot of issues. I can't seem to get the modchip to glitch the console it just boots straight into OFW and doesn't glitch it. The error looks like *== or *=* but I provided a video anyways. Any idea which solder could be causing this?

I am not sure which point is causing this, any help is appreciated. Sorry for poor picture quality.

• Megradome
• Replies: 8
• Forum: Nintendo Switch

According to this.

Yeah thats the *== I'm getting *=*. Not sure. I'm about to try and boot into OFW that may help determine it.

EDIT: when trying to boot into OFW with CPU cable and 3.3v unattached to modchip, It wont boot.

 

[Hayato213]

Seem like you got long, short, short, short.

 

[Joeorisit]

Seem like you got long, short, short, short.

It repeats the error code three times before shutting off. I stopped the video after the second cycle. In my video there are Three flashes for each of two cycles.

 

[Hayato213]

Based on your error code it is pointed at

• =*** eMMC init failure

 

[Joeorisit]

Ok. So if it is this error, what should I do to fix it? I'm lost.

 

[Hayato213]

It can be few possible things you can check your soldering work, around dat0 and sp1 and sp2

 

[Joeorisit]

Ok. I will try re doing the SP1 and SP2 connections, I haven't redone them since the first time.

I will get back about it with the result.

 

[thesjaakspoiler]

The SP1 and SP2 connection is not related to eMMC initialization errors．
Have a look at your DAT0.
Sometimes just measuring with a multimeter shows where the problem is.

Did you use an adapter?
If so, check if the error does go away when you remove it (you will get another error of course).

Sometimes it is people going crazy with flux and a good clean up also solves the problem.

 

[Joeorisit]

I have the correct reading on the multimeter diode mode, .807 is what the dat0 ball reads. I may try and re do it again, but I will try and check if I get a different error when I remove the adapter. Thanks for this answer I felt stupid doing the SP1 and 2 haha.

Post automatically merged: Jan 23, 2026

The SP1 and SP2 connection is not related to eMMC initialization errors．
Have a look at your DAT0.
Sometimes just measuring with a multimeter shows where the problem is.

Did you use an adapter?
If so, check if the error does go away when you remove it (you will get another error of course).

Sometimes it is people going crazy with flux and a good clean up also solves the problem.

I removed the DAT0 and it now gives a long short error code =*. What are my options exactly when it comes to this? Also how do I test if OFW boots? Do I have to disconnect 3.3v power? Thanks!

 

[Hayato213]

I have the correct reading on the multimeter diode mode, .807 is what the dat0 ball reads. I may try and re do it again, but I will try and check if I get a different error when I remove the adapter. Thanks for this answer I felt stupid doing the SP1 and 2 haha.

Post automatically merged: Jan 23, 2026

I removed the DAT0 and it now gives a long short error code =*. What are my options exactly when it comes to this? Also how do I test if OFW boots? Do I have to disconnect 3.3v power? Thanks!

=* point at dat0

 

[Joeorisit]

=* point at dat0r

=* point at dat0

respectfully. I can read an error sheet. I know it the DAT0. I have gotten the correct values and re-seated the DAT0 at least 5 or 6 times now. I am trying to see if there is something else going on, or if the NAND is dead, hence my "how to boot into OFW?" comment.

 

[Hayato213]

respectfully. I can read an error sheet. I know it the DAT0. I have gotten the correct values and re-seated the DAT0 at least 5 or 6 times now. I am trying to see if there is something else going on, or if the NAND is dead, hence my "how to boot into OFW?" comment.

=* just mean your dat0 isn't connected so that why it doesn't glitch, I mean I would check your soldering at dat0, you using an anchor point or you using kamikaze method?

 

[Joeorisit]

Anchor point. I can't even boot into OFW now. Do I have to disconnect every point to boot into OFW?

Also I was thinking about trying to reball the EMMC, and just soldering 34 AWG wire to the DAT0 point. Not how I would do this though.

 

[Hayato213]

You don't have to disconnect if you done it correctly, the problem is probably the dat0 is loose, that why it doesn't glitch common problem with using the anchor, I had an instinct NX using anchor that gotten loose and I end up getting kamikaze.

 

[Joeorisit]

You don't have to disconnect if you done it correctly, the problem is probably the dat0 is loose, that why it doesn't glitch common problem with using the anchor, I had an instinct NX using anchor that gotten loose and I end up getting kamikaze.

Ok. I may try to reball the Emmc, because even without the dat0 adapter in, I can’t get it to go to OFW. Anyone have thoughts on this before I try this?