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Before flashing any custom  ROM  the most important and well compulsory prerequist is that your Galaxy Ace s5830 has to be rooted. Nearly all  custom ROMs  will wipe of all the default apps that come with your  Galaxy Ace S5830 , in order to get them back install the  gapps  given in the link below:   Click here to root your Galaxy Ace s5830:  Galaxy Ace Root And here to install CWM Recovery:  CWM Recovery And here to get the Google default apps - gapps:  G-Apps   Now you may proceed with flashing of a custom ROM on your Galaxy Ace s5830...   Click here to learn how to flash your Galaxy Ace s5830 with a custom ROM:  Flash a custom ROM on your Galaxy Ace s5830   Click on the titles of the custom ROM's to be redirected to their download page.   Remember flashing a custom ROM is up to you and I do not take any responsibility or liability in   c...