[claw]

use the same 1B that you generated and uploaded to the unit. that is the same file you would read back. why do you want to read it back if you already have it ?

use it to generate your code

Yes, that's what also was thinking. But this 1b generates map code that is not accepted at least in my generators (several). I will try once more time.
I like to do the whole certificate process from the begin, because I'm not sure if I have messed still something.
So the question:
can I do the whole process again with FSTool just to put later date to all FSC's?
This would (in my understanding) override previous ones and I' don't have to flash the unit again (my ICOM B is a bit fragile...)

Why do you would need newer date on FSC's?
If you have all the FSC's accepted and navigation works, i don't need newer fsc's for map code.

Post screenshot from FSC-tools.