SDcard not detected on Lumia 520 PFD Cyan

[skynanner]

So.. My Lumia 520 just got updated to Lumia Cyan for Developer Preview. I'm from Indonesia..

And when the update has been installed my Phone doesn't detect my SDcard anymore even i have tried to remove and insert it again.. Anyone has the same problem?????

 

[Muessig]

I'd suggest trying to do a soft reset here. Press the volume down and power button down simultaneously for 10-15 seconds or until you feel a vibration. This should reset your phone to factory settings but keep all your data. Hopefully it'll solve your problem, but keep us updated!