If a hard reset fails, then it's so new the carrier or seller won't have much to do but fix or replace.
As to the GBA stuff, be sure to read the forum policies as discussions about that can result in a discussion lockup.
Hello. OK so i got my new Samsung galaxy S3 GT-I9300 yesterday and set it all up perfectly. I then was searching for games on the Google play store and found ROM Manager to be in one of the highest rankings. I thought it was like an emulator for GBA ROMs so i downloaded it and installed a ROM. cant remember the name. It went into clockwork recovery mod and if I reboot it gets stuck in a bootloop. I went back to clockwork recovery mod with the home power and volume buttons and wiped all the caches and user data. And rebooted but I still get the bootloop. Please help I just want it back to normal i thought I was getting a GBA ROM.
My software running was 4.1.2