New update bricked my Phantom 3 Pro. I am getting absolutely no signal on the camera. The gimbal status says disconnected all the time. What to do? Its a newly purchased P3P. Please help!!!

The new update bricked your phantom. Downgrade de firmware , it is possible to downgrade . Put the old firmware  back on the phantom.  And try and see .
I hope it will work for you

I had similar problem after recent update.
What helped in my case:
1) Turned off Phantom
2) Removed SD card
3) Turned on Phantom
4) Started to get live feed, inserted SD card back in, all works.

Hello varunnahar, could you post the hidden upgrade log here? You can find it by these steps:
1. Enable the option of viewing hidden files in your OS. Below are the websites where you can check how to show the hidden files in your PC.
For The Windows System:
http://windows.microsoft.com/en- ... den-files=windows-7
For The Mac System:
http://ianlunn.co.uk/articles/qu ... mac-os-x-mavericks/
2.Enter the root directory of the SD card, then find the hidden folder MISC and enter it. There is LOG folder in it.
3.The LOG txt file is under the LOG folder.

DJI-Paladin!!
from that hidden LOG Folder -  ][00000667][01 00] Firmware upgrade finished failed (step = 3, err = 0xffffffff) now what i can do???