wget --user=YOUR_USER --password=YOUR_PASS https://support.zte.com.cn/firmware/ZG80/update.bin Or with curl:

curl -u YOUR_USER:YOUR_PASS -O https://support.zte.com.cn/firmware/ZG80/update.bin : There is no public “ZG80 download” repository. You must obtain files from ZTE, your mobile carrier, or an authorized reseller. Always prioritize official channels to avoid security risks.