3.02 shipped on the earliest 11th gen laptops, it was never released as a BIOS update. It may be worthwhile to update the BIOS to the latest version to see if that helps.
Try reinstalling the Wi-Fi driver or running sudo apt update && sudo apt upgrade to see if that fixes it. Also, check if the linux-firmware package is installed correctly.
I recommend that you read the support doc and the forum discussion on the 11th gen bios updates before attempting the upgrade. I think there are some restrictions on skipping some of the intermediate versions.