@afornalli
Did you format the device too or just the card? If you've reformatted the Edge it may simply not be formatted correctly and if it can still connect to a PC in Mass Storage Mode you can try doing it again using only RMPrepUSB as detailed in this thread's initial post: [Only registered and activated users can see links. ].

If it doesn't connect to PC, then it may be bricked and you'll need to load Cure firmware to re-enable MSM: [Only registered and activated users can see links. ].

If i've misunderstood your problem then please post with more information. Also please confirm your device has HWID 2531.