Please tell me the following :
1- existing F/W version is (1.80) ?
2- are you trying to update to User-Friendly Firmware ver.1.93 ?
Go to this link and down load the file :
if response to #2 is "no", please let me know where did you get the file from
you can check MD5 of your file ( wzrhpg300nh2-193 )is it :
081288659200d3c4fd288f9821d6b75e