How to set Festa F41 to N only mode

How to set Festa F41 to N only mode

How to set Festa F41 to N only mode
How to set Festa F41 to N only mode
16 hours ago
Model: Festa F41-Outdoor  
Hardware Version: V1
Firmware Version: 1.0.0 Build 20240329 Rel. 57467

Showing b/g/n mixed at the top right of the screen but I went thru ever setting page and I find no way of setting it to N only mode. crying

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