What (lag, app crashes, black screen) prompted you to update? Are you attempting an OTA update or a USB manual flash ?
: Ensure your TV is connected via Wi-Fi or Ethernet. Tcl 55c2us Firmware Update
Firmware updates can sometimes revert your customized picture calibration profiles back to default factory profiles. Take a moment to review and tweak your brightness, contrast, and HDR preferences. What (lag, app crashes, black screen) prompted you to update
Are you facing any (like a bootloop or app crashes) that prompted this update? What country or region are you located in? Share public link Tcl 55c2us Firmware Update