Hacking I need help on how to fix my switch, it keeps crashing after I try to connect it to the internet to use tinfoil. 2123-0011(0x167b); 0100000000000025

JustSomeDudeWithAQuestion · Jul 8, 2024

F.Y.I: I am new when it comes to modifying a switch; and I got someone else to do it for me when I decided to get my switch modded for the first time.

Like I said I am new to modding a switch, and after not updating it for a while I decided it was finally time to do it. I managed to update the firmware, atmosphere and tinfoil, without any problems, But when I decided to connect my switch to the internet and use the tinfoil shop like I used to do before, the following would happened.

Error code: 2123-0011 (0x167b) // program: 0100000000000025.

I don't know if I some how missed a step while updating it, but every time I try to connect it to the internet to use the tinfoil shop this happens. I've come to understand that this happens because my switch is trying to connect the the Nintendo severs (or something like that), but I have no idea on how to fix this and allow my switch to safely connect to the internet and allow me to use tinfoil like I did before.

Any help would be extremely appreciated.

Illuminaticy · Jul 8, 2024

Previously using apps like Incognito or other prodinfo blanking apps cause crashing on FW 17.0.0+
Writeup on why this happens/happened here

To fix, unzip this to your atmosphere folder. This blocks connections to Nintendo servers, which is causing the crash.
\atmosphere\hosts\emummc.txt and sysmmc.txt

simistef · Jul 8, 2024

thanks, that worked for me

petspeed · Jul 8, 2024

JustSomeDudeWithAQuestion said:
F.Y.I: I am new when it comes to modifying a switch; and I got someone else to do it for me when I decided to get my switch modded for the first time.

Like I said I am new to modding a switch, and after not updating it for a while I decided it was finally time to do it. I managed to update the firmware, atmosphere and tinfoil, without any problems, But when I decided to connect my switch to the internet and use the tinfoil shop like I used to do before, the following would happened.

View attachment 445981
Error code: 2123-0011 (0x167b) // program: 0100000000000025.

I don't know if I some how missed a step while updating it, but every time I try to connect it to the internet to use the tinfoil shop this happens. I've come to understand that this happens because my switch is trying to connect the the Nintendo severs (or something like that), but I have no idea on how to fix this and allow my switch to safely connect to the internet and allow me to use tinfoil like I did before.

Any help would be extremely appreciated.

This has been asked (and solution provided) SOOO many times on this forum. A quick search copuld have saved time for both you and people helping you out

Illuminaticy said:
Previously using apps like Incognito or other prodinfo blanking apps cause crashing on FW 17.0.0+
Writeup on why this happens/happened here

To fix, unzip this to your atmosphere folder. This blocks connections to Nintendo servers, which is causing the crash.
\atmosphere\hosts\emummc.txt and sysmmc.txt

The writeup is not about this. It is about the semi brick that happened when updating HOS to 17.0 if you had previously used homebrew to reset your Switch

JustSomeDudeWithAQuestion · Jul 8, 2024

petspeed said:
This has been asked (and solution provided) SOOO many times on this forum. A quick search copuld have saved time for both you and people helping you out

The writeup is not about this. It is about the semi brick that happened when updating HOS to 17.0 if you had previously used homebrew to reset your Switch

Yeah, I saw that when I opened the thread, and saw the similar threads, thats entirely on me, but I just wanted to play safe I guess, because for some resons those threads never came up when I searched around in google for the fix, and only some older threads on reddit came up, and they alway provided some either conflicting information, or unclear steps (atleast for me).

Regardless, after searching around the similar threads, I found another thread that suggested the use of "exosphere / DNS MITM", which seems to have worked for me.

Thank you for the responses, I'll look more thoroughly for fixes next time.

Illuminaticy · Jul 8, 2024

petspeed said:
The writeup is not about this. It is about the semi brick that happened when updating HOS to 17.0 if you had previously used homebrew to reset your Switch

But…this is exactly what was happening to OP? A FW 17+ “semi brick” (crash) due to prodinfo blanking…? Am I wrong?

petspeed · Jul 8, 2024

Illuminaticy said:
But…this is exactly what was happening to OP? A FW 17+ “semi brick” (crash) due to prodinfo blanking…? Am I wrong?

This is a different kind of "semi brick"
OP's Switch crashed because he had prodinfo blanked without blocking Nintendo servers (DNSmitm)
The writeup explain a more serious "semi brick" where users couldn't boot sysmmc after updating their Switch to fw17 if they had previously used homebrew to reset the Switch

Post automatically merged: Jul 8, 2024

JustSomeDudeWithAQuestion said:
Yeah, I saw that when I opened the thread, and saw the similar threads, thats entirely on me, but I just wanted to play safe I guess, because for some resons those threads never came up when I searched around in google for the fix, and only some older threads on reddit came up, and they alway provided some either conflicting information, or unclear steps (atleast for me).

Regardless, after searching around the similar threads, I found another thread that suggested the use of "exosphere / DNS MITM", which seems to have worked for me.

Thank you for the responses, I'll look more thoroughly for fixes next time.

No worries, I am just getting tired of answering the same question over and over that's all

Glad you solved it though

Hacking I need help on how to fix my switch, it keeps crashing after I try to connect it to the internet to use tinfoil. 2123-0011(0x167b); 0100000000000025

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