I have bought one of these scanners but the user manual is useless, does anyone have more accurate instructions please.
I have used that scanner and you are correct the user manual doesn't exist. A while ago I looked all over the web for a better manual for the ES90. Unfortunalley I didn't find anything on it. What I would recommend is that you look at the Foxwell NT530 manual, because it is close enough. The scanner has the same functionaltiy but the many entries vary a little.