ROM Hack Nintendo Switch doesn´t start after ChojDuir Up-/Downgrade

[NicosionX]

First off all: My English isn´t very good. So sorry for that.

Now I can explain you my problem:
Yesterday I can´t start a game. There was standing something like: “You need an Software Update to open the application”. So I made an Upgrade from Version 8.1.0 to 9.1.0 via ChojDuir.
During the update an error message came up and the console crashed. Now I can only start the console in the Hekate menu. But as soon as I click on “Load EmuMMC”, the console gets a black screen and returns to RCM mode.
I have already tried the following:
-start via ReinX
-Delete and restore the data on the Micro-SD card.
-Multiple EmuMMC profiles created.

Now I would like to know if there is any way to up-/downgrade the switch only from a PC.
Or any other way to start the Switch

Thanks in advance.
Best regards Nico

 

[gaga941021]

Do you have a backup of your system?

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Do you have a backup from before your update attempt?

 

[Clydefrosch]

if you updated emummc, can you still load into sysmmc?

 

[sayja]

I guess restore a nand backup , e.g. via hekate, and then try the update again, might be your nand thats corrupted... Look for a guide for that here though. Not sure uf there's another fix though, am not an expert....

 

[NicosionX]

gaga941021: Yes, I did a backup but I deleted it.
Clydefrosch: No I can´t load anything.
sayja: I can´t load any backups or stuff like that. Becasue I can´t find the option for that.

 

[pcwizard7]

make sure your files are up to date, you can just use "kosmos default"
http://sdsetup.com/console?switch

 

[tglaria]

gaga941021: Yes, I did a backup but I deleted it.

Why would you do that?

If you return to ¿bootloader? wen trying to load from emummc, it could be a corrupted emummc.
When you try to load from sysnand, whst happens?
Are you using latest hekate?

 

[NicosionX]

gaga941021: No I have no Backup.
Clydefrosch: No I cannot load anything
sayja: That was my question. but i don´t have a backup

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Why would you do that?

If you return to ¿bootloader? wen trying to load from emummc, it could be a corrupted emummc.
When you try to load from sysnand, whst happens?
Are you using latest hekate?

I cannot load anything. I get a blackscreen. Like I said

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make sure your files are up to date, you can just use "kosmos default"
http://sdsetup.com/console?switch

I use the latest files

 

[pcwizard7]

gaga941021:
I cannot load anything. I get a blackscreen. Like I said

I use the latest files

his asking why would you delete the nand backup when it's needed for situations like this. call it a lack in judgment

can u book into stock mode? with no cfw?

Do you have your BIS keys or proinfo.bin file? could u try and backup ur system partition which contains the proinfor file

 

[tglaria]

I cannot load anything. I get a blackscreen.

Last time I had this ptoblem I just needed to update the files in the SD to use a compatible version of atmosphere-hekate-nyx.

But it does not look like it's your case if you haven't touched your sysnand. --> Actually I have no idea if you haven't touched your NAND.

Like I said.

uuum, no you didn't.
Re-read what you wrote, you said you have a black screen when trying to load emuMMC, that's it.

You didn't say anything about loading from sysnand.
Also you don't say if the "update you tried" was on emuMMC or sysnand.
Also you don't say which version of hekate you're using (or even if you are using hekate).
Also you didn't say if you're using Atmosphere (pure), Kosmos or other.
Also you don't say what version of ChoiDujour you're using (please fix your spelling on this software, it's not ChojDuir.
Are you using choiDujour or ChoixDuJourNX ? You didn't say that either, I can make an assumption but if it's wrong that would be a LOT of wasted time for me, for you and, probably, for anyone reading.

 

[NicosionX]

tglaria:
I am very sorry for that. I'm relatively new to this whole homebrew thing.
I tried the Update from emuMMC. I usually only use emuMMC.
Yes i am using hekate on the newest version (v.5.2.1).
First I used Atmosphere but a month ago I switched to Kosmos.
I´m using ChoiDujour.

 

[tglaria]

tglaria:
I am very sorry for that. I'm relatively new to this whole homebrew thing.
I tried the Update from emuMMC. I usually only use emuMMC.
Yes i am using hekate on the newest version (v.5.2.1).
First I used Atmosphere but a month ago I switched to Kosmos.
I´m using ChoiDujour.

That looks like you haven't touched the sysNAND → Then you should be able to boot to it without any problems.
What happens when you try to boot to sysnand?

 

[NicosionX]

Last time I had this ptoblem I just needed to update the files in the SD to use a compatible version of atmosphere-hekate-nyx.

But it does not look like it's your case if you haven't touched your sysnand. --> Actually I have no idea if you haven't touched your NAND.


uuum, no you didn't.
Re-read what you wrote, you said you have a black screen when trying to load emuMMC, that's it.

You didn't say anything about loading from sysnand.
Also you don't say if the "update you tried" was on emuMMC or sysnand.
Also you don't say which version of hekate you're using (or even if you are using hekate).
Also you didn't say if you're using Atmosphere (pure), Kosmos or other.
Also you don't say what version of ChoiDujour you're using (please fix your spelling on this software, it's not ChojDuir.
Are you using choiDujour or ChoixDuJourNX ? You didn't say that either, I can make an assumption but if it's wrong that would be a LOT of wasted time for me, for you and, probably, for anyone reading.

I'm very sorry. I'm relatively new to this whole homebrew thing.
The firmware update was with emuMMC. Normally I only use emuMMC. I was using the newest version of hekate (5.1.2). I used to use Atmosphere but I switched to Kosmos a few months ago. I have the normal ChoiDujour for the update. As I said before, I'm really sorry for taking up so much of your time.

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I'm very sorry. I'm relatively new to this whole homebrew thing.
The firmware update was with emuMMC. Normally I only use emuMMC. I was using the newest version of hekate (5.1.2). I used to use Atmosphere but I switched to Kosmos a few months ago. I have the normal ChoiDujour for the update. As I said before, I'm really sorry for taking up so much of your time.

What is that? I posted something else

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That looks like you haven't touched the sysNAND → Then you should be able to boot to it without any problems.
What happens when you try to boot to sysnand?

When I boot in sysnand the Switch is trying to boot, but after the Atmosphere-Logo came up, it goes back to the blackscreen

 

[tglaria]

When I boot in sysnand the Switch is trying to boot, but after the Atmosphere-Logo came up, it goes back to the blackscreen

You could give it a try to what other people have tried:
https://gbatemp.net/threads/black-screen-after-kosmos-and-sept-logos.544510/

https://github.com/AtlasNX/Kosmos/issues/247


Don't know right now what else it could be.
Which firmware do you have on sysnand?

 

[NicosionX]

You could give it a try to what other people have tried:
https://gbatemp.net/threads/black-screen-after-kosmos-and-sept-logos.544510/

https://github.com/AtlasNX/Kosmos/issues/247


Don't know right now what else it could be.
Which firmware do you have on sysnand?

I quess 8.1.0

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I quess 8.1.0

I am not sure, because I don´t was in Sysnand for a long time