So I was on SX OS but wanted to play the latest Dreamcast emulator Flycast which only works in Atmosphere, so I found a way to switch back and forth through homebrew. I am doing this on latest fw 9.0.1 so it should work on any firmware.

You need
Fusee-STARTER https://github.com/Thomleg50/fusee-starter/releases/
Argon-NX https://github.com/Guillem96/argon-nx/releases
Atmosphere files and patches https://github.com/Atmosphere-NX/Atmosphere/releases https://gbatemp.net/threads/i-heard-that-you-guys-need-some-sweet-patches-for-atmosphere.521164/

Put Fusee-STARTER-1.0.1.nro in /switch folder
Put argon folder on root of sd card and argon-nx.bin goes in root of sd card
Put Atmosphere on sd card and the patches go in the same folder and will overwrite some file(won't cover this in detail here as it's covered other places)
Make a copy of your fusee-primary.bin and put in bootloader/payloads
Make a copy of your payload.bin from SX OS on your computer and put it in /argon folder

When you run Fusee-STARTER in homebrew you can now select fusee-primary.bin (or Hekate if you want to chainload) that gets you to Atmosphere from SX OS, if you want to go back just choose Argon-NX in Fusee-STARTER and it will boot SX OS. Done. If docked you can switch back and forth without getting up.

There may be other ways to accomplish this, that's fine. This is just the way I did it and will continue to do it.

 

[Deleted_444986]

Thanks for using Fusee-Starter I will update rapidly for 9.0 libnx and new features
keep listen!

 

[EmulateLife]

Thanks for using Fusee-Starter I will update rapidly for 9.0 libnx and new features
keep listen!

Yeah I give you full credit. I just didn't think there was a guide out there that really explained how to properly swap between Atmosphere/SX OS I had to figure it out myself and just figured if I can help someone else it's worth making a guide. Appreciate your product it's great.

 

[Xellos2099]

Question, i managed to swap from sxos to Atmosphere with your method. However, when i tryu going back to sxos with choose Argon-NX i got a freeze.

 

[EmulateLife]

Question, i managed to swap from sxos to Atmosphere with your method. However, when i tryu going back to sxos with choose Argon-NX i got a freeze.

Did you copy your payload.bin that you use to boot sxos payload on your computer to /argon folder?

 

[Xellos2099]

yes, it is between background.bmp and splash.bmp

 

[EmulateLife]

Is argon-nx.bin on the root of your sd card?

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

I updated the tuturial to reflect argon-nx.bin goes on root.

 

[lordelan]

Here's another nice way:

https://gbatemp.net/threads/hekateb...ebrew-for-hekate-and-payload-launcher.549109/

 

[linuxares]

Why not just use Argon NX? Since when it boots you can click whatever you want to boot?

 

[lordelan]

Why not just use Argon NX? Since when it boots you can click whatever you want to boot?

Argon NX (like any payload) is touchscreen and (therefore) handheld only.
Tbh I haven't checked Hekatebrew yet to see if it has button input but if it had, you won't have to get up when the Switch is docked.

There's this too which definitely does not involve the need of touch input:
https://github.com/suchmememanyskill/Payload_Launcher

 

[unsteadycarrot]

when i just tried this following the steps in the first post, atmosphere never showed in fusee starter and when i loaded hekate i had to use vol - and + to use the menu, when browsing payloads nothing was there so i had to reset and use my sxos dongle boot it all back up.

*edit* nevermind, i had to download the fusee-primary.bin and put it in the bootloader/payloads folder as well as the argon payload folder.

 

[Purple_Shyguy]

Wow. Great stuff.

Would love to play Dreamcast stuff but didn't want the hassle of juggling atmosphere/tx. This is so seamless. Thank you very much for this guide.

 

[lordelan]

By the way I've been using HekateBrew for over a week now and it's indeed the best solution (in my opinion) to achieve this and it definitely does support controller input so you can easily jump between any CFW from your couch while keeping the Switch docked which is awesome and just super easy.

Since it's using the hekate_ipl.ini * just make sure to have everything you want in there.
Simply add payloads to it with the payload keyword like this:

[SX OS]
payload=bootloader/payloads/SX_OS.bin

[L4T Ubuntu]
payload=l4t-ubuntu/coreboot.rom

(obviously make sure those payloads are in the given folders and named like that)

* you can still launch payloads manually from within the app that are not defined in hekate_ipl.ini though.

 

[jeferey]

thanks, works great! flycast running now*. without moving!

 

[Harriszilla]

By the way I've been using HekateBrew for over a week now and it's indeed the best solution (in my opinion) to achieve this and it definitely does support controller input so you can easily jump between any CFW from your couch while keeping the Switch docked which is awesome and just super easy.

Since it's using the hekate_ipl.ini * just make sure to have everything you want in there.
Simply add payloads to it with the payload keyword like this:

[SX OS]
payload=bootloader/payloads/SX_OS.bin

[L4T Ubuntu]
payload=l4t-ubuntu/coreboot.rom

(obviously make sure those payloads are in the given folders and named like that)

* you can still launch payloads manually from within the app that are not defined in hekate_ipl.ini though.

Where would I put my files on my SD card? I'm clueless lol

 

[lordelan]

Where would I put my files on my SD card? I'm clueless lol

Which files. You just take the KOSMOS files to your SD card as usual and put hekatebrew somewhere in sd:\switch\
Payloads go to sd:\bootloader\payloads\

 

[username23bob]

does this still work? because i always get this error when i try to load anything. i only want to switch to use dreamcast like you

 

[lordelan]

does this still work? because i always get this error when i try to load anything. i only want to switch to use dreamcast like you

Just use HekateBrew to switch between custom firmwares.

 

[username23bob]

Just use HekateBrew to switch between custom firmwares.

this was very helpful thank you. so i finally was able to boot atmosphere but when i try to run an nsp i get “unable to start software” message. any ideas?

 

[lordelan]

this was very helpful thank you. so i finally was able to boot atmosphere but when i try to run an nsp i get “unable to start software” message. any ideas?

Jep, most likely sigpatches are not in place. Get 'em:

https://gbatemp.net/threads/i-heard-that-you-guys-need-some-sweet-patches-for-atmosphere.521164/

and

https://gbatemp.net/threads/kosmos-patches-es-fs.542455/