I recently tore down, heat gun'd, and rebuilt my first-gen (CECHA) PS3 which was dead due to a YLOD. A couple weeks later, the YLOD came back, it is no longer booting. I'm currently scoping out options for repairing it. My question to the community is-- Is there anyone trustworthy out there that could both repair the error (and do it right) and downgrade it? (It's a NAND model.) Thanks.