This is highly recommended in order to prevent any power issues during the flashing process. Do not try this on any other device, please check your device’s model number in Settings > General > About Device.
This guide is only for Galaxy Ace S5830 and S5830i.Here are some important instructions and pre-requisites that you must keep in mind before you head towards the installation method. You can also wipe cache and dalvik cache of your phone using a custom recovery. In some cases, to root the phone you need to flash SuperSu.zip file in the custom recovery, having installed the recovery may help you while in some cases to install the recovery easily, you need to have the phone rooted. Along with these, you can make a Nandroid backup, this helps you a lot as you can move back to the previous working state of your phone at any time you want if you have backed up your current system. A custom recovery allows you to install custom roms, mods etc.
