exstract all files to youre sd card use unit id 10 no and map custom enter 900 2 0 0 the no you get from keygen copy to gmapsupp.unl ps to open gmapsupp.unl.txt notepad save remove txt
it does work on my 1490t
lol - should be : unrar the file, copy it in your sd, use your unit id to create an unlock file to add in your sd , in Jetmouse keygen window choose custom mapset-advanced users, fill it with 900 - 2 - 0 - 0.
Create the gmapsupp.unl with notepad, write your created code inside, save as "all files"
It wont be the Queen's English ,but may be clearer