GXV34xx Official Firmware for Zoom 

    GXV3480 1.92.5.48 Firmware File    Release Notes    

  GXV3470 1.92.5.48 Firmware File    Release Notes  

 GXV3450 1.92.5.48 Firmware File    Release Notes 

Note:

- When upgrading from 1.0.3.x, GXV34xx will perform factory reset automatically.
Please ensure to back up data to external storage before upgrading.

- After upgrading GXV34xx to firmware 1.92.5.x, downgrading to a 1.0.3.x or lower firmware version is not allowed. 

Firmware upgrade link via HTTP:

firmware.grandstream.com/gxv34xx/1_92_5_48

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