Hacking "Let's School" don't want to start in 21.1.0 CFW !

[kamedi]

Hello ,
I recently updated my switch with the hats pack to the current version of atmosphere which is 11.0 on 21.1.0.
So, i get install the nsp file of the game using different sources and different hombrews (dbi, awoo). The download and install parts finish without any fail, but by just launch the game it shows that an error has occured !
I hope that can anyone help, Thanks !

 

[thesjaakspoiler]

*harharhar* Sigpatches? *harharhar*

 

[kamedi]

Sorry, I haven't been in the Switch hack community for very long, and I still don't understand the concept of sigpatches !

 

[worm28]

Use these https://gbatemp.net/download/sys-patch-sysmodule.39471/ and these https://gbatemp.net/threads/sigpatches-for-atmosphere-hekate-fss0-fusee-package3.571543/ you need them in order to run any games.

 

[Earthshine]

Use these https://gbatemp.net/download/sys-patch-sysmodule.39471/ and these https://gbatemp.net/threads/sigpatches-for-atmosphere-hekate-fss0-fusee-package3.571543/ you need them in order to run any games.

They really only need one or the the other. Preferably sys-patch, although there's no harm in having both.

 

[kamedi]

Thanks to you two ! i will try these ! starting byt the sys-patch, if it didn't work, i'll get grab both !

Post automatically merged: Dec 12, 2025

It doesn't work ! i take the both files and it still the same problem ! Thanks for your help again !

 

[flier56]

Thanks to you two
https://www.amazon.co.uk/dp/B0G2S8QYZC
https://www.amazon.in/dp/B0F8H8ZKB9

 

[Earthshine]

Thanks to you two ! i will try these ! starting byt the sys-patch, if it didn't work, i'll get grab both !

Post automatically merged: Dec 12, 2025

It doesn't work ! i take the both files and it still the same problem ! Thanks for your help again !

Did you place the files in the proper locations? If so, try unlinking your account in emummc using this, then reboot and see if things are working.

Homebrew Homebrew app  Post in thread 'sys-patch - sysmod that patches on boot'

Nov 19, 2025

too bad then, the .dat the actual information is read from is read from a system savefile .dat (as you can turn off upload/download of savegames through official settings) while most other olsc functions have their values read from the exefs itself.

Don't worry about it!!! We still can edit the config.ini




Here's the linkalho MOD from mrdude:

• josete2k

• 
• 

 

[kamedi]

Also the same problem ! Thank you for responding !

 

[Earthshine]

Also the same problem ! Thank you for responding !

Try not using the hats pack. Download atmosphere and hekate from the official gits and overwrite existing files on your sd card with them.

 

[kamedi]

Same :') !
And also can i relink my account ?! I see that unlink will not erease saves, so what it is for ?!

 

[rull_bull]

Describe how you install the sigpatches above, then we can help you

 

[kamedi]

I just dragged the files to the root of the SD card ! and replace similar name files !

 

[Earthshine]

I just dragged the files to the root of the SD card ! and replace similar name files !

You have this folder? atmosphere/contents/420000000000000B

Also, is it only that one game that gives the error or all games?

 

[kamedi]

That one title specificly and i'll check when i get home !

 

[Earthshine]

That one title specificly and i'll check when i get home !

If it's just the one game, what is the file size? And if you scan it with NXFileViewer, does it say it's corrupt or anything?
https://github.com/Myster-Tee/NxFileViewer/releases/tag/3.0.2

 

[rull_bull]

I just dragged the files to the root of the SD card ! and replace similar name files !

You unpacked the zip files I suppose?
And you replaced all files? You didn’t click no when asked for some files?

 

[kamedi]

Yeah i unpacked and replaced all files !

 

[kamedi]

You have this folder? atmosphere/contents/420000000000000B

Also, is it only that one game that gives the error or all games?

Yes, i have !

Post automatically merged: Dec 15, 2025

If it's just the one game, what is the file size? And if you scan it with NXFileViewer, does it say it's corrupt or anything?
https://github.com/Myster-Tee/NxFileViewer/releases/tag/3.0.2

The base NSP file is about 400MB and the update NSP file is about 200MB, for a total of about 600MB. I scanned a file that compiles both into a single NSP file, because that's the one currently installed on the console after I first tried the separate NSP files, and that's all I found in my downloads... (If you want me to scan the other NSP files from the other sources I've tried, let me know !). And it tells me this after the current scan:

Post automatically merged: Dec 15, 2025

Ps : Yeah, so... I installed the latest prodkeys enabled in the manger. And then i recheck, it's says "Corrupted" i reinstalled all other nsp files from there other sources to see that all of them are corrupted, so i find another one that i scan it before installed it in the switch and it says 'original' and after that it finally work ! Thank you very much ! and also thanks for all of you !