Welcome to TPG Community!
We have located the account using your community details and we can see that your modem has the latest firmware.
Should you need any assistance, feel free to drop us a message. Thank you.
Please be advised that we customise the firmware of the modem we provide and this is different from TP Link's firmware, which is possibly the reason why you're getting this alert from Avast.
Your modem has the latest firmware for TPG and should work properly.
Welcome to the Community!
Using your community details, I was able to check your account and the current firmware version of your modem. I can definitely say that it's up to date.
To check your current firmware version, you need to login to the interface of the TP-Link modem. Once logged in, just scroll down to the bottom and it will show you the firmware version. Similarly, you can go to the Advanced Tab > System Tools > Firmware Upgrade.