: Check the D-Color official website first. They occasionally keep a repository of software updates for their receivers.
: These community forums often have user-uploaded firmware versions that might include custom fixes or improved channel sorting. Identifying Your Hardware Version : Fixing stretched or squashed images on modern TVs
Do not turn off the power until the progress bar reaches 100% and the device reboots. Common Issues Fixed by Firmware
Since official manufacturer support for older DVB-T2 boxes can be spotty, your best bet is to look at dedicated electronics repair and community forums.
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