just have a look at your player's settings and go to firmware version.
if it is ACTxxxx, then yours is an Action chipset and it will run amv files. if you have a 1.5inch/1.8inch screen download this
http://www.mympxplayer.org/amv-conve...-mb-df327.html
if yours is a bigger screen use this
http://www.mympxplayer.org/amv-conve...6mb-df468.html
if it is not ACTxxxx, then most probably yours is a Rockchip which supports avi
http://www.uxcell.com/public/mp4/mp038_avconverter.zip