Summary: I tried to get a different phone, so the same shit doesn't happen again, but the next phone up ( [link] samsung finesse) is $349 and they wouldn't let me just pay the difference.…Apparently, the Samsung SCH-r450 is quite glitchy…It sucks that I managed to make it fail after only a month and a half
Summary: Also worth noting that you need to press and hold volume UP+home+power to get into TWRP (if you want to flash a custom rom, I flashed [link] CleanROM CE).…Hold volume DOWN+home+power to get into ODIN/download mode…Source: [link] XDA