X-Prog M

[fedez]

Not just wrong lock bits, one or more of the clock bits was wrongly set too. If just wrong lock bit the chip can still read/erase

Now you need a special clock injection to be continued with ponyprog

I have setup security bits from upa usb example and thought that "true" in ponyprog means market bit...so I marked vice versa, and press write but I dont get message that write was successful, am got "device missing"
Now what I do I got "device missing"...

[Zmann]

That was my problem with UPA/Pony too on my early day.

Find an oscillator, not just a X-tal, of 4-8 Mhz. Power it up and feed the output to mega64 pin Xtal1. Good to pay attention on too strong output power of a big oscillator.

Continue as usual with ponyprog

[xoom]

It depends what is set to cksel fuses if its ext RC then need to connect resistor and capacitor (RC circuit) or ext. clock then you need to feed square wave to xtal pin.. that clock can be made from 555 timer chip

[fedez]

That was my problem with UPA/Pony too on my early day.

Find an oscillator, not just a X-tal, of 4-8 Mhz. Power it up and feed the output to mega64 pin Xtal1. Good to pay attention on too strong output power of a big oscillator.

Continue as usual with ponyprog

I have used 6 Mhz oscillator, connect to oscillator 5v and other leg to atmega64 Xtal1 pin but no luck...

[Zmann]

Quite hard to check OSC without oscilloscope but I'm still quite certain the the cause is from wrong clock bits because Pony does not allow you to set SPIEN. Can to try with one more OSC.

[fedez]

Quite hard to check OSC without oscilloscope but I'm still quite certain the the cause is from wrong clock bits because Pony does not allow you to set SPIEN. Can to try with one more OSC.

tried with 4Mhz but the same...
What if I change atmega64?

[Zmann]

Yes, you can use the new one, with working dumps

[fedez]

Yes, you can use the new one, with working dumps

fuse bits setup as usually?
dumps I will use from "XPROG Clone Repair"

[fedez]

with new atmega64 everything ok. Thanks!

[fedez]

Hello,
how set up Lock bits after write flash/eeprom to atmega64 with ponyprog?

[Dunker]

Its in the tut here:

http://www.digital-kaos.co.uk/forums...repair-314041/

[fedez]

Its in the tut here:

http://www.digital-kaos.co.uk/forums...repair-314041/

am using this tutorial, but there programing with upa-usb, I am with ponyprog...and do not understand how setup lock bits after write flash/eeprom?

[Zmann]

setup (configure) lock bits, to lock or to unlock?

to lock: open config window> read> tick lock1,lock2> write> done

to unlock (after locked): no way (but some of the way) unless to erase chip which means eep+flash gone too but the chip become unlock state.

[fedez]

setup (configure) lock bits, to lock or to unlock?

to lock: open config window>read>tick lock1,lock2>write>done

to unlock (after locked): no way unless to erase chip which means eep+flash gone too but the chip become unlock state.

1. Erase atmega64
2. unlock (fuse bits), use configure like in photo(there you can see that lock1 lock2 market!
3. Write flash/eeprom
4. Lock bits, how can I lock if I have market bits lock1, lock 2 before write?

or point 4 is not important?

[tas_daz]

i want to know in 9s12 from mercedes ezs with 1l85d mcu secure how you read it ?5 cables or and xlcs cable and 2 ground.have any photo.i don t understand the 2 pairs cable in twisted?if have any photo it is good for me.thanks