VAG-COM/VCDS EVERYTHING

[lupu_sandu]

Give a try

[magadan]

Give a try

I want to add to the told.
Either reflash atmega, or reprogram the GAL. Or check the soldered details.

[ahadi]

Hey mates!

Anyone have any idea what this could be?

I am testing the cable on my workbench (not in car)

This happened after replacing a dead ATMEGA and the LED is blinking red.

Thanks.

I dnt believe you had a problem troubleshooting VCDS .

[KenshinPT]

I dnt believe you had a problem troubleshooting VCDS .

I don't get it. Sorry

Regards.

[ahadi]

try another Atmega if transistors all ok .

[max4ever]

Photos of my dongle:

I`ve got the same interface, but mine got the STC mounted up !Do i have to dismount the STC in order to write Atmega?

[KenshinPT]

I dnt believe you had a problem troubleshooting VCDS .

I`ve got the same interface, but mine got the STC mounted up !Do i have to dismount the STC in order to write Atmega?

It's not mandatory to remove the STC chip. But I recommend to.

So, remove these 3 marked components: STC chip, transistor, resistor.

For your own know-how, the STC chip is there only to reflash the 93C46 EEPROM. Everytime the cable is powered with 12V, the 93C46 EEPROM is reflashed.

If the ATMEGA is compromised, for example by an internet connection, the STC won't do anything.

Good luck.

[max4ever]

My interface have 93C56 EEPROM!

[KenshinPT]

My interface have 93C56 EEPROM!

No problem mate

93C46 is 1KB
93C56 is 2KB

That means, that at least, your 96C56 EEPROM will be half empty :P

Regards.

[KenshinPT]

Give a try

I want to add to the told.
Either reflash atmega, or reprogram the GAL. Or check the soldered details.

I dnt believe you had a problem troubleshooting VCDS .

Thank you all guys!!!

The problem is now solved and it was due to a wrong solder. One of the ATMEGA pads was lifted and not soldered.

Thank!!!

[JetSet59]

hello, do you think that i need to unsolder the STC ? i have already flash my Atmel without problem..

[mishu_b]

...
yes for sure,

and also you have to modify your connections like into the tutorial here in the forum section!

atb

[mattydr67]

hello, do you think that i need to unsolder the STC ? i have already flash my Atmel without problem..

Mate for your kind of tool I suppose you don't need to unsolder and midify anything.
Before do any modification or unsodler the STC please try to reflash the Atmega using the pads near the USB once and report.
Good luck

[JetSet59]

i have already succesfully flashed my Atmel many time (with USBasp) with 908/10.6 DUMP.
Actually i have no problem with the STC Chip, but i have read many time on this forum, that it's needed to unsolder the STC Chips to prevent erasing if internet connection is "detected"

[mattydr67]

i have already succesfully flashed my Atmel many time (with USBasp) with 908/10.6 DUMP.
Actually i have no problem with the STC Chip, but i have read many time on this forum, that it's needed to unsolder the STC Chips to prevent erasing if internet connection is "detected"

No mate
STC prevent Atmel erasing not if it is not there.
It's reflashing the Atmel back with eeprom dump that it was programmed.
In some tools you need to unsolder it if you want to reflash your tool but in the tools as yours you don't need to unsolder it.
Good luck

P.S. - My advise it is : do not use internet conection in the computer where you had VCDS installed ever.