If you get the error message ” putpkt: write failed: Broken pipe.” while compiling your iphone or ipad device, try doing this to resolve the issue.

a) quit Xcode (and the GDB it is running)
b) unplug device
c) delete app from device (hold icon until the ‘X’ appears)
d) turn off device
e) turn on device
f) plug in device (if itunes wants to sync, let it finish)
g) launch Xcode

It will clean your memory and give you a clean slate so Xcode can load your device with the latest build.