Clear out Android System Update?

[Sizzlechest]

I have a brand new H918 that I was able to install TWRP and root. It's on 10i and it has an Android System Update waiting to be applied. I turn off automatic updates in the Developer Options, but the update was already downloaded and wants to be applied. Is there a way to clear out this downloaded update so it stops bugging me to do it? Also, how do I apply stock updates going forward with TWRP installed? Is there a flashable stock 10j?

 

[Artimis]

I don't know about the AT&T model, but on the VZW model, there are two different system update apks. If you freeze/disable them both, you'll kill the notifications. One can be disabled through the Application manager. The other needs to be done through Titanium Backup or with the "pm disable" ADB/shell command

 

[jt1954]

Go to root>cache. you'll find the update zip in the cache folder, not in fota. Just delete it.

 

[Sizzlechest]

The folder is empty. I booted to TWRP and cleared the cache. The notification still shows up.

Edit: to clarify, there is a fota folder under /cache but it's empty.