Problem with ez downloader

[abbas1707]

some days ago i built a programmer for 8051, which is " ez downloader" available on net.
in the beginning every this was fine. i.e i was able to burn all hex files.
but after some days what happened....when i burn a bigger hex file  i.e greater than 3k, the burned microcontroller does not show any output, infact it do nothing.

but when i burn smaller hex files less than 3k every thing is fine.

so i want to ask all of u about this problem.not only this is the problem with my programmer but i have confirmed this with 3 more programmers of my friends. they all show same problem. i cant understand y it is happening.
so plz help in finding this problem.

thanx in advance.

[user112]

see the source code for the uC from programmer maybe you chose an older variant
also read again the information from the site:
"Since the new S series needs more bit for mode setting. So you have to move signal from pin 14 to pin 13 as shown above."

[user112]

Do you made any progress with easy downloader?
for me works fine (if I made a mistake sorry-easy downloader=ez downloader)
with this http://www.kmitl.ac.th/~kswichit%20/easy2/ez52s.hex
and exe from atachament