You just need to replace the existing softkey pictures by transparent .png pictures of the same size.

On the Nokia C1-02 one of the icons in the main menu is the Alarm Clock. Unfortunately Carbide.ui doesn't have an entry for that icon.
I tried manually editing the theme.xml file by adding
...

I had the same problem has you have. I did manage to install it but it wouldn't launch when using the shortuct. The solution I found was not to launch carbide.ui from the shortcut but from the...

Hello,
Transferring an uncorrupted nth theme from my phone (C1-02) to my computer, uncompressing it then re-compressing it to .zip, then renaming it to sameNameAsPrevious.nth and sending it back to...

Rather weird, you got a problem. Using a similar phone (c1-02) and the same version of Carbide.ui I didn't have any problems changing those icons, but I wasn't able to change the Alarm clock icon