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For dead TVs that do not respond to USB firmware, the issue often lies in the eMMC storage chip. In these scenarios, the chip must be reprogrammed using specialized hardware. hk.t.rt2861v09 firmware
Different brands use different remote control codes. If you flash firmware meant for a Changhong TV onto a Sansui TV, your original remote control will stop working. 4. Step-by-Step USB Firmware Flashing Guide If you want, I can: For dead TVs