Helloooo everyone! Query... I just themed my iPhone 4 running ios 6.1 with the Cartal Plus theme and a few icons such as BiteSMS and Mewseek were left out. They look odd in their original square state standing beside their circular counterparts. I tried changing com.apple.mobileSMS to com.apple.biteSMS in iFile, but alas, it did not work. Obviously I'm trying to theme certain icons to match the others and any sort of help would greatly be appreciated friends!
Each app has it's own unique bundle identifier--get even one letter of that wrong, and your new icon won't appear in place of the old one.
For example, the reason your bite icon didn't change is because the bundle should be named com.bitesms, not com.apple.biteSMS. Bite is not created by Apple, so Apple's name would never appear in their identifier.
But there are no hard and fast rules on how a dev identifies their bundle. Twitter, for example, is com.atebits.Tweetie2. No way you'd guess that on your own.
There are a couple of ways to find out what an app's bundle name (and icon name, which also varies!) should be. The Cydia app AppInfo is the easiest, at least for App Store apps. For Cydia tweaks, it's easiest to use iFile to search for the info.plist. Instructions on how to do that (and a great deal more info on how these work) can be found here: http://ios.xengi.org/cfbundleidentifier/default/faqs.php You can also download a large theme with many icons, such as Glasklart, and look at how your apps are named within that theme.
One other thing--both bundle names and icon names are case sensitive! If you tweak an icon and it doesn't change, you've usually mistyped either the bundle name or a the icon name itself.
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Cross posted with missjenna. Another thing to note: icon frames/auto-theming doesn't work on Cydia apps. If you want the corners "cut", you'll need to edit those icons in a photo editor. Many themes provide a .psd file for use in Photoshop so you can create any icons they didn't provide.