https://github.com/Plailect/Guide/wiki/Part-4-(2.1.0-Downgrade)
I'm following this guide and after downgrading emunand to 2.1.0 OTPhelper one click setup gives me an error : stage 1 and stage 2 failed, 1tmd not found or corrupted.
[Old3DS]
After downgrading to 2.1.0 (Part 4 Section V) OTPhelper one click setup give me an error : stage1 and stage2 failed with 1 tmd not found or corrupt.
I read the Troubleshooting and i tried 4 times but even if the downgrade gives me no error OTP says that 1 tmd is missing.
What should i do?