My serial # is fine. But what I am not sure is if those who are upgrading beyond 5.1 to 6.0.0-6.0.1, are they upgrading by way of a special backup procedure which will allow them to preserve their OFW 5.1 and below in order to allow the jailbreak to work?
When you updated your OFW did you just do a standard procedure (e.g. updated from the switch retail settings) or did you do it differently?
Basically I don't own an Xecuter SX Pro yet. My switch was on OFW 5.1 which I know differently works. However I foolishly update the OFW to 6.0.1...