That was my experience--basically, the themes would not stick on reboot even though I was not updating apps or re-applying themes. The System UI themes would stick, but not the apps. They all went back to default. I tried this numerous times and it didn't work...
Until this morning. The only change I did was I made sure that, to begin with, I was using the
default Samsung theme from their theme store. Once I did that, it started working better. So basically...
- Uninstall all overlays, reboot;
- Make sure you are using Samsung default theme.
- I deleted other themes I downloaded (Material_Black in my case);
- Reboot;
- Select overlays and choose "Install and Enable". Reboot.
- Select overlays and choose "Enable selected". After a couple of secs the Substratum app updates its own theme.
- Reboot.
In the past, after the last step, the app themes go back to default. Today, I rebooted 3-4 times and everything stick. I'm not really sure whether it was the Samsung default theme thing or just pure lucky configuration at the time. I just thought I'd share.
Going forward, my pain is when I update apps, I have to connect my PC and re-apply overlays. This is not so bad for me because:
- I update apps manually weekly
- The new Substratum experience does not require me to acknowledge install and uninstall of each overlay--It's automatic which I prefer.
I'll check out ThemeGalaxy though. That looks interesting.