Hi there,

I'm trying to upgrade the fw of my wifi powerline extender. On the WPA4220 TP-Link support page is a firmware dated 2018-05-10.

When I try to install it, I'll get this error:

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

File name of the fw-update is: WPA4220(EU)1.0_update_1.2.9-20180509_beta_254.bin

Here is the data of the device:

Firmware Version:    
1.2.9 Build 151026 Rel.75883n
MAC-QCA7420-1.3.1.2141-00-20160428-CS
Hardware Version:    
WPA4220 v1 08EF4015

Upgrading should work but it does not. Any ideas on how to proceed?

Thank you!

Best regards, Rado