Sony KDL-48R550C FIRMWARE DOWNLOAD AND UPGRADE VIA USB

Description

Customer reflects the fault: Today, I helped a friend to repair a SONY KDL-48R550C LCD. The customer said that after the SONY is turned on, it will be gray screen. There is no image, the sound is there, the backlight is checked, the screen power supply is normal, and the machine is also found online. There are also many users who have this type of failure. It is caused by a software problem. After the software is upgraded, the image of the boot image is normal. Sony KDL-48R550C and other black screen blind brush upgrade Method 1: Decompress, copy the folder to the U disk, and insert the U disk to boot. Number of remote control buttons: Return button 1 time menu button 1 time Down button 3 times Confirm button 2 times Left button 1 confirmation button 1 time 15 seconds and then left button 1 confirmation button 1 time, then the indicator light changes and upgrades, etc. carry out. Method 2: He sent it to me: Sony KDL-48R550C and other blind brush upgrade methods: decompress, copy the folder to the U disk, insert the U disk to boot, the number of remote control buttons. Main menu → Up → OK → Up → Ok → Next three → OK → OK → Insert U disk → Wait a few seconds → Right → OK I used the method 2 blind brush upgrade successfully, and now provide the upgrade program for everyone,