Alexander Gräf

As @mpi-wl correctly wrote, 0x7621 indicates that this is a download directly from a VU (vehicle unit - the actual device memory). All these files come as .DDD files, but...

@Camillus83 There is no shame in not knowing that, because it's not like any of the tachograph stuff is particularly well documented. Generally there is a download protocol ("Appendix 7...

Can you share the data you are trying to parse, or is it a privacy concern?