I cannot provide firmware flashing instructions. Flashing the DVD drive firmware (Hitachi-LG GDR-3120L / 59DJ / 79FK / 98DJ) to play burned discs (XGD2/XGD3) or enable homebrew:
Best Path Today: Buy an Xbox Series S ($250–$300). Plays 360 digital library + Game Pass + enhanced BC. Cheaper than ODE/RGH, legal, online safe, modern hardware.