We are having same issue

Current Firmware: 3.16.9 Build 151102 Rel.59672n

Trying to load TL-WR940N_V3_150312

Error: Error code: 18005
Upgrade unsuccessfully because the version of the upgraded file was incorrect. Please check the file name.


Verified router is V3 downloading file from http://www.tp-link.com/en/download/TL-WR940N.html#Firmware

Hi there, people!

First check this article - http://www.tp-link.com/en/faq-46.html

Please, note that vX is talking about hardware version and for each HW version usually you have more than one FW versión.

So, let's check your stuff:

WR941N v2/v3 - last FW version is of date 100929 #|||# If you want better performance, I suggest you to consider buying a new router.

WR940N v3 - latest firmware - http://www.tp-link.com/res/down/soft/TL-WR940N_V3_150312.zip


Hope this'll help.