JVC XVN420B
Instrukcja Serwisowa

4.3

Upgrading of firmware

The latest firmware for upgrading is updated in "Digital Video Storage" page in JS-NET. At the time of service,compare the version of the product and the latest version, and upgrade the old version into the latest version. 4.3.1 (1) (2) (3) (4) 4.3.2 (1) (2) (3) (4) (5) Distribution method Compressed file is distributed through JS-NET. Download the version of the destination of the model, and self-extract the file. "N420XXXX.rom" file is made.(The portion of �XXXX� may change with a model and destinations.) Write "N420XXXX.rom" file in the root of CD-R/RW. (Folders such as jvc_dvd are not necessary.)

Upgrade method Prepare upgrade disc with "N420XXXX.rom" file written in its root. Press "POWER" key of the main body to turn the main body on. Insert the upgrade disc. The contents of disc are read automatically and upgrade is started. TV screen 1/28,2/28... if the count-up is displayed and it becomes 28/28, it will be displayed on FL display as "DONE", and upgrade will be completed. (6) When upgrade finishes, the main body changes from the POWER ON mode to STANDBY mode. (7) Press the "OPEN/CLOSE" key, and open the tray to eject the disc. (8) Set the main body at test mode, and perform initialization. Then, confirm the version of the firmware.

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