I have upgraded my ND2 to v4.3.1, unfortunately it didn't work well with VS2013. Basically I can't attach debugger to it after successful deploy via VS2013. I decided to downgraded. I have followed per instruction as described here:
Everything seems OK to me, however when I reattach the ND2 back to the PC, MFDeploy.exe was no longer able to detect it anymore.
If I flashed it back to 4.3.1, everything started to work again.