How to fix UniFi AP AC flashing white and getting stuck in a boot loop

I have recently been playing around with one of these http://www.ubnt.com/unifi#apac. It's a great little wireless access point. Together with http://www.ubnt.com/unifi#UnifiSoftware you can build up a very powerful Wi-Fi network.  In fact you can add up to a 100 access points to your network.

The Problem
While changing some settings on th AP I managed to get the it to get stuck in a boot loop. It was basically just flashing white all the time and before it could start up it rebooted and started flashing again. The problem was that the unit wasn't even able to get an IP address from the DHCP server before it crashed so I could never access the unit via SSH or http.

The Solution
The trick is to access the unit before it crashes and reload the vram memory. Here is what you need to to to fix the problem.

1. Grab a computer with an Ethernet port
2. Disconnect it from any network
3. Hard set the IP on the PC to let's say 192.168.1.13
4. Plug in the AP to the POE adapter
5. Plug in the PC via Ethernet socket to the LAN connection on the POE adapter
6. Start a command window and run an infinite ping like this ping 192.168.1.20 -t (you will see the pings failing and when the AP reboots you will see how it connect for a little while returning successful pings)
7. As soon as you notice that the pings are successful you need to access the AP in a web browser by going to http://192.168.1.20
8. Hopefully you will get the web page of the AP. At the bottom of the page it says something like "Reload vram".
9. Click the link saying "Reload vram"(you have to be very quick before it reboots again).
10. If it doesn't work repeat from bullet point 7.
11. Eventually when the vram is reloaded the AP will boot up properly and go blue. You will also see that all your pings are now successful.
12. Unplug the AP from the computer and put it back in your router/switch
13. Power cycle the AP(only if  it has a solid blue light) and it will reappear in your controller software.

I hope this helps someone. It took me quite some time to figure it out. Many thanks to Oliver at broadbandbuyer.co.uk for the hint about relaoding the vram.