Do not power off the TV or remove the USB drive during the flashing process, as this can permanently damage the mainboard. Software: Firmware Update 5.004 - SONY.RU
: You can find multi-part RAR files (like part1.rar ) on platforms such as Lab-One Forum or dedicated LED/LCD firmware sites like SofturiTV . Download CV628H A50 1920x1080 Sony USB part1 rar
: While holding the button, plug the TV back into the outlet. Do not power off the TV or remove
: Plug the prepared drive into the USB 2.0 port (avoid Blue USB 3.0 ports for flashing). Download CV628H A50 1920x1080 Sony USB part1 rar