22:59, 24 July 2020 – UNIAN
An international team examining the black boxes from the jet has completed a preliminary analysis of the data in France.
The transcript from the black boxes from a Ukrainian jet accidentally shot down by Iran on January 8 confirms the fact of illegal interference with the plane, Ukraine’s deputy foreign minister wrote on Twitter on Friday. Yevhen Yenin said Kyiv was expecting an Iranian delegation to visit Ukraine next week for talks, Reuters reported.
The Canadian Transportation Safety Board said on Thursday an international team examining the black boxes from the jet had completed a preliminary analysis of the data in France. “Grateful to all partners who helped bring this moment closer. Black boxes from #PS752 were read out and deciphered successfully. The transcript confirmed the fact of illegal interference with the plane,” Yenin wrote on Twitter.

Iranian forces say they downed the Ukraine International Airlines Boeing 737 jet after mistaking it for a missile at a time of high tensions with the United States. All 176 people on board were killed.
Ukrainian Foreign Minister Dmytro Kuleba said this month that it was too soon to blame human error for the shooting down of the airliner and that many questions remained unanswered. President Volodymyr Zelensky said in February that Kyiv was not satisfied with the amount of compensation Iran had offered.

I guess you could call shooting down a passenger plane, illegal interference, or are they implying the planes electronics were being interfered with, from outside forces?
I think they are referring to the former. It sounds like they wanted to establish that the recorder was working and that there was a recording of the illegal incident. You know how lawyers are.