Sony KLV-32R3*B Service Manual page 85

How to update TV Software (2)
7. Press <Power> Key to turn on the TV.
 
Please confirm LED under SONY logo it turn to GREEN Please confirm LED under SONY logo, it turn to GREEN
8. After 20‐30 seconds, the LED is turn to Amber and blink.

LED blinking indicates "Under SW Update".

IMPORTANT NOTE: PLEASE DO NOT PULL OUT
THE AC PLUG DURING THIS STATE.
9. After 1‐2 minutes, LED blinking will finish. Please press <Power> key.
If SONY Logo displays the screen and LED is turn to GREEN, Software update is If "SONY" Logo displays the screen and LED is turn to GREEN Software update is
success.
10. Pull out the USB pen drive from TV.
.