All bets are off and you should ask the folk that advised that route.
Hey guys, I just bought a Samsung Galaxy Fame and I was having trouble with signing into gmail and accessing the Play store. I tried a few things, including disabling and enabling the downloads. After all else failed I rebooted the phone to factory settings and re-installed the firmware, but afterwards, the Play, gmail and google accounts all had disappeared. I have tried to root the phone and download the Gapps that way, I've also put the Gapps file onto the external and internal SD card and tried to apply the update via the phone re-boot option, but still nothing. Any help would be muchly appreciated!!