Every time I do something with my phone (HTC desire 300) that requires a reboot, such as software update or factory reset, it goes to this weird page saying "Locked - security warning" and some boot loads or whatever. It's only done this ever since I tried updating my software the other day. I have to shutdown my phone, usually by taking out the battery, so it never does what I wanted it to do in the first place. Is there any way I can stop this from happening???? It is really annoying me now.