With the TV off, insert the USB and then power on the TV. The update process should start automatically, usually indicated by a blinking LED.
and your panel resolution is exactly . Installing the wrong resolution or board version can result in a "black screen" or permanent bricking of the device. Download CV628H B42 1366x768 Sony Normal (Seedha) part4 rar
: Since you are looking for "part4," you must download all parts (Part 1, 2, 3, and 4) into the same folder before extracting. You cannot use Part 4 alone; extraction must usually be started from Part 1 to reconstruct the full ctvupdate.bin file. With the TV off, insert the USB and then power on the TV
Do you have the of this firmware archive? With the TV off