Is possible downgrade via .bin firmware Nec 3540 at old model 3520 or 3530?
I'm curios to know why you would want to downgrade, I'm sure you have a valid reason.
No, this is not possible
I am not satisfied, i want test other firmware for burning plus support and more quality.Nec have not realeased new firmare in 4 mounth of realease, in official site i not have found any news.Thanks
I suggest you try recommended & reliable media then.