vag com 805 read atmega

[azazell]

u can not .. because u don`t want to read anything

[kroksy2101]

Thank you all. This really helped

[tomasfilip]

Hello,

from my experience and what I saw on internet, the baseboard has more-than-less same.. There is FTDI chip, ATMEGA162, CAN chip from Microchip and GAL from Atmel...

but anyway baseboard should looks different..

The issue with repairing cable is eeprom in the ATMEGA, FTDI EEPROM isn't point of intereset, because without correct contents in small eeprom in ATMEGA cable shouldn't works properly (for full access)..

This eeprom and firmware in ATMEGA are locked by LOCK bits for uC, so cannot be read back by programmer. Where china's guyes got firmware is strange for me...

[KenshinPT]

Where china's guyes got firmware is strange for me...

Reading protected uC is not that hard with proper equipment:

Laser, microscope and acid will do the job.

What's the cloning method in china:

1- China buy original tool.
2- Read all dumps and copy the hardware.
3- Build clone hardware with those dumps.
4- That firmware become blacklisted and user must use those dumps with the correspondent software.
5- China buy new version of the original tool and the cycle starts again.

[tomasfilip]

ok, I agree, I heard this story.. but I don't beleive that is still cheaper than other way.. (like stole somewhere else)

[KenshinPT]

ok, I agree, I heard this story.. but I don't beleive that is still cheaper than other way.. (like stole somewhere else)

To stole a dump or source code you need:

1 - to hack into Ross Tech computers;

OR

2 - to have a mole inside Ross Tech;

OR

3 - to crack the content of the uC;

My opinion goes for the 3rd solution but that just my humble opinion.

[packea]

Thanks !!!

[lopo100z]

Very usefull

[Nimand]

Thanks!

[danys]

Thanks!

If it help You,
could You help me how You crack atmega software.

[pedrodiaz]

UPA USB will program ATMEGA from VCDS cable without a problem.
Program eeprom
Program flash
Program Lock bits
Program Fuse bits and you are done.

Hello,
How do you connect Upa?
Please wiring.
Thanks!!

[andyzred]

you can read the upa manual how to connect, but even connected you will not be able to read it if the fusebits were configured in such way which will not allow future programming