Oh... Ok... It's been a long time since it was modified. Thank you for your answers.
I did what you told me but didn't work. It detects the usb but don't read it. In the end it shows several messages: something about tftp, and...
Ok, I'll do it when I'm back at home. Yes, it's RGH. Could I use, instead of the backup nand, the updated one?
As the tittle says, I bricked my xbox 360 trying to update it to 17559 I was following a video to update it. In the video I used an app called...
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