Android 4.0 comes with its own browser and cannot be installed, indicating that there is a problem with the signature. I just brushed the mobile phone system and didn't change someone else's rom. The built-in browser is not 4.0. You can try to redraw the native browser of 4.0 and put it in the brush bag.

Isn't the brush package a compressed file? Open the Rom file with decompression software and drag the browser in.

That's what I did.

I hope you can, too