[pietje001]

I don;t know what amtel248 is, but you need to find chip 95020 on the circuitboard. (check both sides)

then startup digiprog, open eeprom menu.
select set type in eeprom menu,
choose 95 -> 95020
then read.

if it doesnt work, there can be a few possibilities.
-you said you used cable 04. I think you need cable 01 (cable 01 has smaller clip then cable 04).
-clip is clicked with wrong side on chip
-clip is bad quality. I think this is problem. if you have a blue clip chance is very big It won't work whatever you try.
buy a cable from yanhua:
http://www.cardiag.co.uk/st01-01-02-cabl...-2094.html
it's good quality.