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The_Tick's avatar
The_Tick
Aspirant
Aug 10, 2022
Solved

WNDR3400v3 — N600 Wireless Dual Band Router Firmware update problem

I'm trying to update FW on my router (last step before replacing entirely) as I keep having problems with outbound audio during web conferences.   Device is WNDR3400v3 — N600 Wireless Dual Band Rou...
  • michaelkenward's avatar
    michaelkenward
    Aug 10, 2022

    The_Tick wrote:

    I haven't attempted to apply the .chk file because the extension description suggests that the file may have problems.  It is not a .img file. 


    For unknown reasons, Netgear uses both .img and .chk as file extensions for firmware.

     

    These are both open to confusion because there are other types of .img and .chk file – .img is a disk image and seems to confuse macs in particular while .chk is also a Windows "recovered file fragments" file.

     

    Firmware for the WNDR3400v3 is, indeed, a .chk file.

     

    WNDR3400v3 Firmware Version 1.0.1.44 | Answer | NETGEAR Support

     

    Then this:

     

    How do I manually upgrade firmware to my NETGEAR router? | Answer | NETGEAR Support

     

     


    Also, the manual shows a screen shot of the page where there are options to check online or upload from PC, but it only describes the check online option, which isn't working.

    You need to read a bit more of the manual. It also describes the manual process in the section Upgrade the Router Firmware. But it wrongly tells you to look for an img file. That's what you get when you copy and paste between manuals.

    The manual may get things wrong, but the update process will protect you and prevent you from applying the wrong firmware.