rollback
n. countablen. a way of returning a system or process to an earlier, working state. You use this when a new change causes problems and you need to go back to how things were before.
n. the process of reverting a system, software, or process to a previous state to resolve errors or instability. Often used in technical contexts to describe the reversal of a failed update or configuration change.
The IT team performed a rollback after the new software crashed.
After the security patch caused widespread login failures, the administrators initiated a rollback to the previous stable version.
While the initial deployment of the new architecture promised significant performance gains, the subsequent rollback highlighted the inherent risks of implementing untested changes in a production environment without a robust recovery plan.
The noun is a deverbal from roll back. The verb is a back-formation from the noun despite being redundant to roll back.