Back in the golden era of Symbian (think Nokia N73, N95, and the venerable 5800 XpressMusic), JAF (Just Another Flasher) was the king of the hill. If you wanted to debrand your phone, change product codes, or revive a dead handset, JAF was the tool of choice.
: Open the OGM PKEY Emulator and select "Random PKEY Raskal SN" (or a similar option) under the emulator's step-1 menu, then click "GO" to launch the JAF interface. jaf setup 19862 omg jaf pkey emulator v5 32
It tricks the J.A.F. software into thinking a genuine P-Key dongle is plugged into the PC. Enable Free Use: Back in the golden era of Symbian (think
: Automatically detects and sets the correct flashing parameters for the selected phone model. Service Tasks and the venerable 5800 XpressMusic)