"Cellular" phone line not available after updating to 10.2.1.537

After updating my phone with 10.2.1.537 yesterday, I cannot receive or make calls. When I try to make a call I get the error message "The 'Cellular' phone line is not available. Choose a different phone line and try your call again."

Also, I cannot listen to my music or watch my videos. I get a message saying the the media file format is unsupported. I've been listening to my music every day until today I noticed I can't listen anymore.

So I have those two problems after updating and have no idea how to fix them.

I tried rebooting, my computer, my phone. I even tried reloading the OS, but now Sachesi can't find a USB connection, even though my phone is connected to my computer and to BB Link.

I tried getting answers through other threads, but none of the solutions I saw posted worked for me or I got no response at all.

Thanks in advance for your help.

How to reload your BlackBerry 10 smartphone operating system | CrackBerry.com you could try using this?

What operating system is on your PC?

Windows 7 professional, both at work and at home.

Thank you so much. That worked.