BC1 is a block compression format (DXT1). “Extra quality” would mean:
Open SP Flash Tool or your preferred servicing software as an Administrator. bc1 da file extra quality
For ongoing monitoring, set up a cron job that generates daily bc1 da file extra quality snapshots. Use this systemd timer template: BC1 is a block compression format (DXT1)
texconv -ft DDS -f BC7_UNORM -oq 100 input_bc1.dds bc1 da file extra quality