As a matter of troubleshooting, do the following:
What happens?
- Reformat your new SD card using guiformat. A quick format will be fine. Don't restore any old files or folders.
- Download the latest Atmosphere
- Download the latest fusee-primary (next to Atmosphere)
- Put Atmosphere onto your SD card
- Put the SD into your Switch
- Put the Switch into RCM
- Launch Atmosphere using fusee-primary
Update: Everything wasn't fine. Sure I was able to install games in my sd card and to see the content of the said sd card, but the games wouldn't launch. I tried a buch of game without success, on the home menu the icons weren't loaded and I couldn't play the games.
I tried using different sigpatches but that didn't change anything.