Hi! So I recently bought an EZ FLASH 4(EZ402 TF 2014.0814), i put on the 1.77 firmware and everything is working fine, even Mother 3 form nor memory, but there is one game that doesn't work which i would really like to play: Yoshi's Island. I tried everything but i always get the black screen. I'm thinking about downgroading to another firmware, i read that Yoshi's Island is working fine with 1.72 Reset firmware. Is it ok if i downgrade to that? The downgrade process is similar to the upgrade, i just put the ez flash up bin on my micro sd card and press the L and wait for the downgrade on my gameboy? Do i have to format my micro sd card before the upgrade? Thank you!