Huawei Nova 5T has been updated with EMUI 11 version V11.0.0.177 in some European markets like Germany. It brings the September 2021 security patch update to the device.
The update is being rolled out in some regions as an OTA. If you own the device, you should check whether your device has received the update or not. You can manually check for the update, go to System > Software update > Check for updates. If the update is not available in your region, just wait for few more days. There is another way to update, open HiCare app > Update > Check for updates.
The current update is still based on Android 11. The update brings stability and performance improvements to the device. As it is a small incremental update, the size of the OTA is just 174MB.
EMUI 11.0.0.177 update details:
Firmware: EMUI 11.0.0.177
