i dont know how to do that, i see all saying that i need to update settings, but how to do that ?
Which 3DS model do you have and what firmware is it on?
Do you need it for Gateway or something "else"? Because Gateway's instructions are pretty clear. Which part didn't you understand and what have you tried so far?
Then install it to your sysnand.USA = 0004001000021000 9.0-9.5 = v8203 MD5: 5077D839633EC80E7A9D3CA98B794D4B
EUR = 0004001000022000 9.0-9.5 = v8202 MD5: 7D9E073A6349DDEF77E67B2102B4EEA5
JPN = 0004001000020000 8.1-9.5 = v9224 MD5: 375EDB36DA62AE44D4D8C91DAB854573