Zonet Technology ZSR0104C Series - Manual (Page 28)

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Through the “Choose file” menu, locate the latest router firmware and open it. For example, the
latest firmware file, zonet_2004.bin, is located and opened, the file name will appear at the entry
of the firmware file name.
Step 3. Click the “Apply” icon from the firmware upgrade page
After clicking the “Apply” button, will appear the confirmation page.