Problem with firmware getting erased by random!!!

[Synthex]

As you wish.
I have never used PonyProg ...

[denis]

One more question. While doing pullup resistor modification I take out the pins 6,7,8,9 from socket and connected them to 47k resistors then connected them to pin 10. Pin 10 also is not connected to socket like pin 6,7,8,9.( they are not connected to the board there is only a resistor bridge to pin 10 )

Is this wright? Do i have to connect them to socket or not?
I thought this might be a mistake

[dmitri]

One more question. While doing pullup resistor modification I take out the pins 6,7,8,9 from socket and connected them to 47k resistors then connected them to pin 10. Pin 10 also is not connected to socket like pin 6,7,8,9.( they are not connected to the board there is only a resistor bridge to pin 10 )

Is this wright? Do i have to connect them to socket or not?
I thought this might be a mistake

You've made a mistake. "Pull up" resistors are meant to avoid the pins 6,7,8,9 picking up unwanted signals. They still have to be connected as shown in the schematics.

[dmitri]

I'm sure the settings in prnyprog and cable is ok since I've reprogrammed with tihs setup a mounth ago.

If the settings are the same, your Atmega maybe died ...

But if I click ignore in the error message after read device command it reads the atmege succesfully. Is it possible if it died?

If PonyProg said it could not detect a device, all your further attempts to read/program atmega are futile.
Presuming your ISCP cable, parallel port, power to Atmega are alright, I would say your atmega is dead.

[denis]

Yes I realised my stupid mistake late. I fixed it now but this time my desktop pc with parallel port is down. I'm not gonna play naymore tonight. It's not a good day i suppose.

Sorry for taking time of all of you. Tomorrow I'll post the succesfull results
thnaks again

Edit:

This morning everythink is ok. Writing firmware is succesfull after ixing wrong pullup resistor modification.
Thanks