The tech downloads both parts and extracts them to get a single file (usually named ctvupdate.bin or similar). They copy this file to a drive.
: The TV's standby light begins to blink rapidly, indicating it is "swallowing" the new software. A few minutes later, the Sony logo appears, and the TV is back to life. Technical Breakdown Download CV628H A50 1920x1080 Sony USB part2 rar
If the USB method fails, professional repair shops often use an RT809H programmer and ISP cables to write the software directly to the EMMC chip on the board. The tech downloads both parts and extracts them
This specific board is a popular "all-in-one" smart TV motherboard often used to revive TVs with broken internal software or to convert a Sony-branded panel to a smart system. the Sony logo appears