In the past CMEs have even knocked out transmission lines. However, it is unlikely that every electronic device would get fired globally. But if that were to ha

In the past CMEs have even knocked out transmission lines. However, it is unlikely that every electronic device would get fired globally. But if that were to happen we would have bigger problems to solve, e.g. getting food. You could look at the devastation brought on by the recent tornadoes to see that electronic technology becomes the least of our concerns.