When 9.0 was released and atmosphere + kosmos didnt support it yet, my brother had updated my switch to 9.0 on my ofw sysnand. I tried updating it to the latest version recently and it still doesn't work. I recently decided to try to fix what happened to my switch afterwards. Whats happening with my switch is that whenever I try to boot into cfw (emummc or the cfw sysnand) it would show every splash screen before booting into a black screen, where I would have to repeatedly press the power button to turn off my switch in that state. The only nand thats usable is ofw sysnand. Does anyone know how to fix this? If doing a nand restore is the only way how would I do that?
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