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Linux/WL1837MOD: Missing wl1271-nvs.bin

Part Number: WL1837MOD

Tool/software: Linux

I am using dart-mx6 module provided by variscite having imx6 and wl83xmod wifi

when try to run

ifconfig wlan0 up

iw dev wlan0 scan | grep SSID


nothing happend

so i ran command

dmesg | grep wl

output -->
[    2.944723] wlan-en-regulator: disabling
[    5.118379] wl18xx_driver wl18xx.0.auto: Direct firmware load for ti-connectivity/wl1271-nvs.bin failed with error -2
[    5.208997] wl18xx_driver wl18xx.0.auto: Falling back to user helper
[    5.622483] wlcore: wl18xx HW: 183x or 180x, PG 2.2 (ROM 0x11)
[    5.642471] wlcore: loaded
[    5.644610] wlcore: driver version: R8.6_SP1
[    8.625959] wlcore: PHY firmware version: Rev 8.2.0.0.237
[    8.737739] wlcore: firmware booted (Rev 8.9.0.0.70)
[    8.755924] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   60.611266] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready

the file wl1271-nvs.bin is missing from directory /lib/firmware/ti-connectivity ,I am not able to find the file  anywhere ,can you provide me the file