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 "Simple 360 NAND flasher 1.4b (BETA)", I understand first I did a backup of the nand. With it I got some files, one of them "flashdmp.bin". After that I used an app called Autogg, as I understood to create a new nand with the update. I think all of these steps were done correctly, but then I used again "Simple 360 NAND flasher 1.4b (BETA)" on the xbox and then, for some reason, it got stuck at 1.4%. I left the xbox there for an hour or so. When I turn it on, only the power LED lights up, but no video. If I turn it on with the eject button it enters into XeLL, with an IP address 192.168.1.99 Do you know some way to unbrick it? Any help is really appreciated.
Copy your nand backup of the previously working nand you just backed up to a FAT32 formatted USB flash drive and ensure its named updflash.bin Power the 360 on with the eject button and usb drive connected, Xell should flash your nand backup back to the console and the 360 will be like it was before you attempted to update. I suspect you have a RGH console? if so Simple 360 NAND flasher does not work with RGH consoles from what I remember. Its advisable to use Xell to flash nand updates, as described above.
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?
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 searching some files, like xenon.z One of those messages says: "MMC Console Detected! Skipping uda0:/updxell.bin" and "MMC Console Detected! Skipping uda0:/updflash.bin"
This means you have a 360 with an Emmc. Xell can't flash those unfortunately, you need to use a hardware flasher soldered to the 360's motherboard, so whoever initially modified the 360 would have to help you recover from this.