I'm having this problem since I was trying to upgrade Aptoide from 6.5.X to 7.X.
I was trying to upgrade Aptoide from inside Aptoide: Installation failed.
I was trying to
adb install or
pm install it, got the same response:
So I removed the older Aptoide version and got the same response exactly except for several times where I got
I tried upgrading my CM version (My device is OnePlus One with the latest official COS12.1), didn't help, same response.
I checked the list of packages, there were no conflicts with the name in
AndroidManifest.xml and there were also no special character in that file (I used apktool to decompile the apk and look at the files).
I have no idea what I'm doing wrong but I don't want to mess with the package and there's nothing I know I can change in my phone's configuration that would fix that.