Have a N4. I've made all I could. Recovery, Fastboot, CWM, Wipes... I've flashed several Stock and Cyano Roms and, with all versions from 4.3, the phone stucks in Google logo.
It works fine with any version based in 4.2.
At the end, I've discovered something: If you install a 4.3 and flash the 4.2.2. radio, it works!. However, I've tried it lost the wifi signal sometimes (I think its normal with a different radio version). So All seems to show that the problem is located o the radio's Software.
Note: If you flash a 4.4, it doesn't matter that you flash the radio. Stucks.
Think we have a big problem here, guys...