RB750 upgrade now reboot condition

I just got my first rb750 the first thing I did was update it from 3.29 to 3.30. Now it reboots every 10 seconds and I cannot access it. I have tried the reset switch but to no avail. Anyone got ideas on how to make my board useable again. Thanks

run netinstall, hold ‘reset’ button, turn on the router, when the LED goes off - release the button. then RB will start looking for netinstall servers

http://forum.mikrotik.com/t/netinstall-on-rb411r-and-rb750/29812/33
http://wiki.mikrotik.com/wiki/Netinstall