im following the guide and have the micro sd card loaded with the firmware and boot files. the magnet is succesful in putting the console to sleep. im using a preflashed r4i ntr boot card. when i hold start select x and power for several seconds my 3ds just boots to a soft black screen with flashing power light. ive tried to micro sds both formatted to fat 32 using built in windows formatter but still cant get it to work. any help guys?