---
title: "I am not able to send e-mails anymore with an older firmware version on my INSYS OS device"
slug: "i-am-not-able-to-send-e-mails-anymore-with-an-older-firmware-version-on-my-route"
updated: 2026-05-27T13:32:55Z
published: 2026-05-27T13:32:55Z
canonical: "docs.insys-icom.com/i-am-not-able-to-send-e-mails-anymore-with-an-older-firmware-version-on-my-route"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.insys-icom.com/llms.txt
> Use this file to discover all available pages before exploring further.

# I am not able to send e-mails anymore with an older firmware version on my INSYS OS device

Some e-mail service providers don’t support **TLS versions 1.0 and 1.1** anymore. Please update your device to the lates firmware, in which we implemented **TLS versions 1.2 and 1.3**. The latest firmware is found under the following link: [Insys OS Firmware](https://docs.insys-icom.com/docs/en/software-en#insys-os-firmwares)