Huawei Nova 6 5G users getting the April 2020 security patch update with version number EMUI 10.0.1.178. This update optimizes the system and improved system security using Android security patches.
Download Huawei Nova 6 5G EMUI 10.0.1.178, just tap on Settings > System > Software update > Check for Updates and Download it!
Or, You can also get this update via the Hicare app: HiCare > Services -> Update > Check for updates.
Source – Huawei Update