This is how you do it. Jailbreak your phone, get SSPrefs. Enable battery percentage. Then, sync. Now restore your iphone to the NORMAL firmware (if you want).
It will stick through the sync'd jailbreak without the actual jailbreak.
This is how you do it. Jailbreak your phone, get SSPrefs. Enable battery percentage. Then, sync. Now restore your iphone to the NORMAL firmware (if you want).
It will stick through the sync'd jailbreak without the actual jailbreak.