freeze again i have tried 2 times not work
no you don't.
As soon as wi-fi is on and you can verify that you are connected to the internet, scan the QR code I linked inside Cubic Ninja with the boot.3dsx download from the ninjhax website on your sd.
Hm..... I really don't know what's going on... tell me step by step what you have, and what you're doing.