This would be do-able, but not a good idea.

Flash memory is a consumable resource. If you write to the same address too many times, it will render the flash memory useless. Since the boot logos (and the kernel) always reside in the same memory spot, you'd be wearing out that memory spot each time you turned on the power instead of just each time you replaced a logo or kernel as you normally would.

The flash memory for the player settings such as the current song pointer is stored just as frequently (it's stored when you turn off the power), but it's not as bad because its address is moved around on each boot. So you get many more "stores" out of the saved player settings than you would out of the boot logos.