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Forum Discussion
CBR40 Firmware file is corrupt on the website
Could someone please confirm for me the firmware file here is corrupt: https://www.netgear.com/support/product/CBR40.aspx#download
> Could someone please confirm for me the firmware file here is corrupt:
> [...]
I doubt it. _Which_ "the firmware file" there? What did you do with
it? "CBR40-V2.5.0.14.zip" looks fine to me:
$ unzip -l CBR40-V2.5.0.14.zip
Archive: CBR40-V2.5.0.14.zip
Length Date Time Name
--------- ---------- ----- ----
40119162 10-23-2020 03:29 CBR40-V2.5.0.14.chk
809 10-23-2020 03:38 CBR40-V2.5.0.1_Release_Notes.html
--------- -------
40119971 2 files Perhaps it would help if you revealed how you came to that
conclusion.
"corrupt" is not a useful problem description. It does not say what
you did. It does not say what happened when you did it. As usual,
showing actual actions (commands) with their actual results (error
messages, LED indicators, ...) can be more helpful than vague
descriptions or interpretations.
https://community.netgear.com/t5/x/x/m-p/1721037#M124018
Visit http://netgear.com/support , put in your model number, and look
for Downloads. (For older versions, under Firmware and Software
Downloads, look for "View Previous Versions".) Find the kit(s).
Download the kit(s) you want. Read the "Release Notes" file for
instructions. (In the User Manual, look for "firmware", and,
especially, for a topic like "Manually Upload Firmware to the Router".)
When that fails because of a deficient User Manual, try:
Twice earlier yesterday I downloaded new firmware for my RBR50 & RBS50. The downloaded zip files contained .IMG files which worked perfectly to update the 2 units firmware. As you note the downloaded zip for the CBR40 contains a .CHK file. In the old DOS days that indicated a bad checksum in the file. Are you suggesting that the CHK file can be used to update a firmware?
Never mind. I see it here now:
https://www.file-extensions.org/chk-file-extension
Netgear does indeed use both .IMG & .CHK as valid file extensions for a firmware updates. Guess I have been around too long. CHK used to mean trouble.
JimHolman wrote:
Netgear does indeed use both .IMG & .CHK as valid file extensions for a firmware updates. Guess I have been around too long. CHK used to mean trouble.
That is what it said in the page that I pointed you at and was one reason why I posted it here.
How do I manually upgrade firmware to my NETGEAR router? | Answer | NETGEAR Support
The .IMG thung also throws some people who try to click it and reel back in shock when their PC sees it as a disk image.
There just aren't enough three character extensions out there.
