ND-3550A mod and Nero Express with LabelFlash

I have ND-3550A flashed with 1Y4 firmware.
I installed the NEC Nero software and there is not a “burn label” button as shown in the LabelFlash documentation.

Does anyone know if this software option is dependent upon the model of optical drive installed?

If so, is there a way to crossflash my ND-3550A to ND-4551?

Forget it! If you want Labelflash, you’d have to buy a 3551 or 4551!!

BTW, you then use a ILLEGAL copy of the software. You are not allowed to use this software because you have no 3551/4551!