I got this console sealed about 3 weeks ago and ran fine, it never had RROD since it was made back in 2006. I flashed it with xell, put jtag wiring in, and booted fine, and the console ran for about a week. Then I tried re flashing stock nand, and i think i left the jtag wiring in. I removed it, flashed stock nand, and still 0020. Then I erased the nand with no jtag wiring, then wrote the stock nand, same thing. Finally I flashed to xell nand, put it jtag wiring, now 0021. Is this my dvd drive or something?