Sorry I should elaborate more…
When it RRoD’s its basicly in shut down mode, xbox overheats and goes into that RRoD…
If you wrap it up in a blanket it causes the system to overheat to a point where it shuts itself down and resests it (Like a CPU on a PC, gets to hot it shuts down and resets on you so you dont kill it) so it hits its safety threshold shuts itself down and wipes clear the RRoD thinking it never happend
I know it sounds stupid but it works, look up xbox 360 blanket trick on youtube.
I did it for a friend of mine as well it does work, but his xbox 360 RRoD about 2 weeks later