its definitely the SD card. i installed bootmii beta2 just fine and prepared about 6 SD cards (2x Microcenter 2GB, 1x microcenter 1gb, 1x PNY 2gb, 2x Sandisk 8gb MicroSDHC, 1x 512mb sandisk) and only two of them worked for booting up, yet i could technically prepare all of them just fine. it's...