@gwynnion @meltedcheese @Kalshann I visited a major ground station in Europe once where they managed to rescue a satellite that had a software error in the attitude control system and was tumbling uncontrolled.

They used their 32m dish and continuously sent out the software patch for about a week on highest power until it locked in by chance.

Also got some first-hand reports on how they rescued XMM-Newton in 2008 after the RF antenna switch failed. Really fascinating stuff.