You cannot proceed without verifying your hardware. The Tenda F3 has multiple revisions (V1, V2, V3, V5, V6). Installing V5 firmware on a V6 unit will brick it.
Some V6 units removed the USB port to reduce cost. You cannot use the USB portable method. Instead, look for a TFTP portable method —which involves running a tiny TFTP server from a USB stick on your PC. The same "portable" concept applies, but via Ethernet. tenda f3 v6 firmware portable
The Tenda F3 V6: Transforming the Router into a Portable Powerhouse You cannot proceed without verifying your hardware
There are several websites and forums that offer customized firmware for the Tenda F3 V6. Some popular options include: Some V6 units removed the USB port to reduce cost
To ensure you have these "portable" networking modes, you may need to update to the latest V6 firmware: Get the official firmware from the Tenda Support Center Access Settings: Log in to your router dashboard (usually 192.168.0.1 Wireless Repeating: Look for the "Wireless Repeating"