I had same problem with my Samsung Xpress C410W. I had a bit paper jam.then firmware upgrade then all light blinking and not-usable anymore. I had non-genuine toner. xxxx Solution: even though HP says you can not backward firmware upgrade, you can!Hi
I need the older firmware driver for Samsung C410W.
If anyone has maybe V3.00.02.19 or V3.00.02.16
Looks like the ver V3.00.02.20 has disabled generic toner cartridges (that's what I am reading from other posts)
Tx