Service manual

4. Firmware Upgrade Procedure

When you receive the returned LCD TV, please check whether the firmware version is

the latest. If not, please do the following procedures to upgrade it to the latest version.

4.1 Equipment Needed

- N3235WM LCD TV

- Fixture for Firmware Upgrade

- VGA Cable

- PC (Personal Computer)

- Firmware Upgrade Program

- One additional LCD TV for checking the program execution

N3235WM ISP FIXTURE PC

4.2 Installing the USB device driver. The USB driver will be upgraded if necessary.

"PL-2303 Driver

Installer.exe"

4.3 Insert the USB to RS232 Download Board to PC’s USB port. Then you can found

the USB Device detected and follow Windows comments to finish the Driver install.

4.4 Execute the Mtktool to start download the file. The Mtktool program will be

upgraded if necessary.

"MtkTool Auto

BaudRate.exe"

4.5 The Mtktool Operat

4.5.1 Select Platform : MT537X

ViewSonic Corporation Confidential - Do Not Copy N3235w-1M