Hello! I faced an issue using my switch and I'm pretty sure it's about atmo so I want to share it here. My switch can't initialise CFW - emuNAND and CFW - sysNAND if I have clean emuMMC on my sd card. Let me explain what exactly did I do.
1)Launch semi-stock
2)Update sysNAND using Daybreak to 15.0.0 (factory reset option, FAT32 + exFAT)
3)On the next boot press VOL- to get into hekate and power off (Did not try to load sysNAND)
4)Format new sd card with Large FAT32, block size default
5)Copy to sd card "clean" set of hekate/atmo/patches etc.
6)Make SD File emuMMC on this card
7)Run CFW - emuNAND / CFW - sysNAND
Tried to launch emuNAND about 4 times and sysNAND about 3 time. Every time I try it just goes to black screen or atmo logo -> stuck on Nintendo Switch logo.
I'm not really sure if factory reset option makes my sysNAND really clean like out of box.
Finally, I just got nervous, tried to launch full stock, got Nintendo set up screen, turned off and tried again. It didn't work. Then I got through nintendo set up and made emuNAND from it and it worked.
Switch Mariko, hwfly first release, bought about an year ago.