After the March Update my Roku Will not boot. Stays at Roku screen for about 60 seconds then screen goes black. led on roku just flashes every three seconds. I have tried hard reseting and it worked one time then froze then hard reseting it doesn't do anything anymore.
You don't say what Roku model and model number you have. It's always a good idea to give this information as sometimes it makes a difference. Find out via Settings > System > About.
If your model is one that supports an SD memory card, a corrupted memory card has been known to prevent the startup from completing. If you have one in place, try removing the card and see if this allows the startup to complete.
Can't go to settings if it's bricked. Mine is the non sd model
The model number should be written on it somewhere. When you say "hard reset", did you hold in the reset button for no less than 30 seconds?