Commits, tickets, and scans prove what your own systems recorded about a fix. None of them, on their own, fixes when it actually took effect — before an independent third party, and before the dispute began.

Article 9 of Directive (EU) 2024/2853 presumes a product defective if the manufacturer won't hand over technical evidence. That closes the refusal problem. It leaves untouched a narrower one: whether the evidence handed over was dated before the dispute began.