[Q] Install ROM after full data wipe question

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http://forum.xda-developers.com – So back on my Evo 4G whenever I wanted to flash a new rom, I would load it on my SD card. Then boot into custom recovery and wipe cache/Dalvik... Then would wipe ALL data/factory reset. Then I would install my new rom off of my SD card. With my S3, I cannot access anything on my SD via CWM recovery. I have a SDXC card formatted to FAT32 and am on Blazer 1.8 I want to do a full data wipe before flashing new ROMS, but I am worried that if I do, I won't have a way of getting a zip file back on my phone after doing so. It ALMOST seems like. Remember being able to access my SD in CWM when I (HowTos)