This cart is an Acekard 2i clone that shares the same bootloader with the AK2i, even the physical connection issues are the exact same as the AK2i ones (faulty connection, wobbling cart). You can use the official AKAIO updaters with it and they work just fine. I read it online a few months ago that this flashcart was actually made by the same people that made the Acekard 2i, and that the only reason AKAIO doesn't work on it is that @Normmatt implemented some code that...
How to convert an R4i Ultra (r4ultra.com) clone into a legit Acekard 2i using a hacked 3DS
How to convert an R4i Ultra (r4ultra.com) clone into a legit Acekard 2i using a hacked 3DS
