A few years ago when I had my iPhone 3GS, and wanted to see the battery displayed as a percentage (before this was implemented as a feature of iOS). I achieved this via jailbreak. Now my issue is this: I can't turn it off. I am several versions of phone and iOS beyond where I was when I implemented the jailbreak, unfortunately I (incorrectly) figured that when I migrated hardware this issue would resolve itself.
I am wondering is there somewhere I can go in the filesystem and remove a file or flag or something to resolve this?
The accepted answer to this question goes into more detail regarding this jailbreak hack.