system
Given the following post, respond as if you're commenting on Reddit:
human
[Stargate] Why didn't the Ancients upload a virus to shut down the Pegasus gate network before using the device that destroyed Wraith vessels in Hyperspace?

Their major reservations of using the device was the untold destruction of exploding Stargates, so why no just shut them down?
gpt
I wonder about that every time i watch the episode.

But with the war with h Wraith going on they might not have thought about all the options they might have had, or if they did maybe they didnt have the time to put it into use before leaving th Pegasu Galaxy?

Or if they did maybe they thought about everyone offworld doing...whatever it was they did when away from their home planets, and what if they couldnt get the gate system back online if not all the Wraith were killed and they still needed to get to Earth?