help for Smart 451 Bosch ME 7.7.0 chk correction

[Bluueelfer]

Hello everybody,
have a Smart that always has Lamda errors ....
When trying to read, tell me KTAG chk mistake.
can someone please correct?

[figani]

When trying to read, tell me KTAG chk mistake.

After reading, you get checksum mistake...?

[NASTASE]

Bad file size.

[Bluueelfer]

yes always checksum mistake. have another ecu there are no problems

[Bluueelfer]

does anyone have a good file?

[figani]

does anyone have a good file?

which one exact...?
you have another there, you wrote in post 4...
use this flash from this ecu...

[flag]

mate the problem is your tool, doesn't do checksum when reading

[Bluueelfer]

but KTAG reads the other ecu without problems.
only config is different because of start. I changed 95080 to another ECu Immo is ok but does not start.
think the ecu file is broken. not OK.
can no one restore chk?