Upgrade Via Sd Card; No Local Firmware Servers; Figure 18: Gxv3275 Firmware Uploading; Firmware Version 1.0.1.20 - Grandstream Networks GXV3275 Administration Manual

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UPGRADE VIA SD CARD

For users that could not use remote upgrade or could not access the phone's Web GUI to upload firmware,

upgrading via external SD card is an alternative. Follow the steps below to upgrade GXV3275 via SD card.

1. Download the firmware file to PC and save it in SD card.

2. Insert the SD card to GXV3275.

3. Power cycle the GXV3275 and the 5 LCD keys on the bottom of the screen will light up.

4. Wait for the LCD keys light to turn off.

5. Once the light is off, immediately press and hold both keys

(the first LCD key from the left) and

(the third LCD key from the left) at the same time.

6. Release the keys when the key light turns on again.

7. The GXV3275 will start upgrading and display the upgrading process in the screen.

8. Wait until the upgrading is done.

9. The GXV3275 will reboot itself.

10. Check the firmware status and remove the SD card.

Note:

Upgrading via USB storage device is not supported on the GXV3275.

For users that would like to use remote upgrading without a local TFTP server, Grandstream offers a

NAT-friendly HTTP server. This enables users to download the latest software upgrades for their phone via

this server. Please refer to the webpage:

GXV3275 Administration Guide

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