Hacking 3ds not recognizing R4 sdhc dual core 2021 hk

[Vemundroe]

My 3ds doesnt recognize my R4 sdhc dual core 2021 .hk flashcart.

I have tried multiple kernels but nothing seems to work

 

[eyeliner]

Is your 3DS hacked?
Unhacked, it might be blocking the card? Do legit games work?

 

[Elbart]

I have tried multiple kernels

https://github.com/hansoljin/flashcard-archive/tree/master/ace3ds.com_r4isdhc.com.cn_r4isdhc.hk_2021