[jtanner]

The new key is made by dump but not in the reverse order.
If you are trying to write a key to a dump, then you most likely will have a different password.

Huh??

I've coded about 30+ vehicles all EWS3 perfectly fine.  I would read the EWS, save the bin file, Write to the new keys, Tick the new key boxes I intended to add then write back to the EWS.  You have to write back to the EWS so it knows that the new keys you've added are active.  I'm using the same process I have done many times before.

Also, what password do you refer to? There's no mention of passwords within the software and no way to enter a password even if I wanted.  I've never been asked or had to do anything password related