) as soon as possible to book a test slot.
There is a v2.58 software fix available for Vestel T8300 Freeview HD boxes, badged using various brand names listed in this bulletin. Boxes running v2.54 or older will find that they can only pick up a single HD (DVB-T2) mux and with the COM7 mux rollout well underway, this means that the box has to be updated to v2.58 in order to pick up all the HD channels available.
It looks like there will be no over-the-air update as the DTG’s engineering channel site is not showing any scheduled releases. However, the relevant receivers can be manually updated via USB or RS232 connections.
There is service bulletin with full details on how to manually apply the update and obtain links to the software files. CLICK HERE