Remove downloaded system update from Huawei Due to unfortunate circumstances I need to use my old phone again (Huawei P8 Lite 2017 Emui 5.0.1). I did a factory reset a few days ago, and am now trying to install my most important apps. 

Unfortunately I keep running into space constraints. It seems there is a 2.4GB file downloaded for a system update, but even before installing any apps my phone did not have enough free space to execute it.

I am willing to accept being stuck on a lower version till I switch my phone, but I need to remove the huge file as the 2.4GB is blocking me from installing critical apps.

I have already blocked new updates from being downloaded automatically, but am now stuck with the one that is already there.

So hence my question:

How can I remove the downloaded system update from my Huawei phone?

What I tried so far:
- Install a file browser and look for an OTA dir, I don't seem to have access to that
- Go to the update and storage cleaning apps, but I did not see any way to clear this download

I imagine I could do a factory reset and block automatic downloads before connecting to wifi, but as I just installed and configured 80% of my apps, I really don't want to do that.
Go to settings > apps and Clear Data for the Software Update app. Seems to work as the app takes up 3GB with an update downloaded.