Following a huge Rogers outage on Monday, the company’s chief technology officer has issued an apology and an explanation about what happened.

In a statement updated on April 20, Jorge Fernandes confirmed that services had been restored across Canada by Monday evening.

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The “root cause” of the issue turned out to be related to a recent Ericsson software update, Fernandes revealed.

He went on to say that both Rogers and Ericsson will “learn from what happened” to ensure that it doesn’t happen again.

“We know how much you rely on us and yesterday, we let you down,” he said. “On behalf of all of us at Rogers, we sincerely apologize.”