Archer C6 Firmware v1.3.4 failed to back up device configuration
Recently brought this Archer C6 wireless router. After upgrading firmware from original v1.1.0 Build 20190115 to latest v1.3.4 Build 20200512, I cannot backup device configuration.
Doing a configuration backup (Advanced > System Tools > Backup) will create a text file .txt instead of a .bin file. The wizard cannot recognize the file at restoration (Advanced > System Tools > Restore). I have then renamed the .txt file to a .bin file. But the wizard still cannot restore the configuration file properly.
I do not experience this problem in firmware v1.1.0. Device configuration file .bin was created successfully at the time. Only after upgrading to the latest firmware that I experience this backup problem.
Please advise if this is a bug with the latest firmware.