Arduino nano 33 iot binary file

Hello,
I downloaded the file from (https://github.com/arduino/ArduinoCore-samd/tree/master/bootloaders/nano_33_iot) this link and burned by chip (ATSAMD21g18).
I also tried the blink example from the Arduino but I can't use the wifi module.
I can't access to the wifi.
I don't know why and I'm wondering if I can download the latest arduino nano 33 iot binary file.
Thx!

Start by reviewing bootloaders/nano_33_iot in the linked ArduinoCore-samd repository and the reported ATSAMD21G18 board setup. Reproduce the Blink and WiFi failure if the hardware and binary are available; done would require identifying whether the repository has the appropriate current binary or documenting the cause of the WiFi problem.

Written by the indexing model from the issue text.