was on a perfectly working freeboot 12611. Got arkham city and needed to update to 13599 to play it. I accidentally flashed back to 9199 freeboot ! So now I'm stuck

pressing the power button = boots to original NXE. pops up with a message saying "insert disc" "please insert the disc that came with your device" cant do anything. insterting a game does nothing.

pressing eject = boots to "Xell - Xenon Linux Loader 0.3.r99.3-git-"

So I have no idea how to go about reflashing my 360 to a working freeboot since I cant access xex loader and launch flash360 anymore. I have my last working nand backed up. Crossing my fingers that it can be fixed via usb updating.

someone please help!!

Just make an image of of the 13599 kernel, put it on a flash drive, plug it into your console, turn the console on via the eject button, let it flash the image, and then reboot.

Yup. Just make sure the image is named "updflash.bin" , without quotes of course, and Xellous will flash for you.

Also make sure you patch your SMC if you did the transistor method and also fix bad blocks yourself to avoid complications.