SX Core on Mariko. Sysnand on 10.2.0, SX OS on 10.2.0. I created 2 backups when I first installed Core. both Emunand(SXOS on microsd1) and Sysnand got STUCK on joycon logo. After rechecking installation, and trying everything, i remembered 2nd Microsd backup. I inserted it in Mariko and voila...