Hi. I have Lumia 620 and for my country the Amber update is just released. However I can't install the update. The problem is: The update was downloaded, but couldn't be opened. (8018830f). I'm from Bulgaria. My region on phone is Bulgaria, Microsoft account region is Bulgaria. First my phone language was english, so I changed it to bulgarian, but this doesn't help. The problem is not because storage, I have 2,5GB free space. Some help?