[Q] [Ascend Mate] Can't extract official firmware topic

I have Huawei Ascend Mate MT1-U06 with Android 4.1 B221 and I decide to try Android 4.4 firmware B321. But it's recommended to install first B930 firmware. And actually my problem is really stupid, because I can't extract B930, but with B321 no problem to extract it. And I try on 3 laptops with Windows and Linux, which means the problem is not from me. Why I have this problem and is it have some another place from where I can download firmware B930.
Link to official page.