# Change Update to Last Known Good¶

Sometimes bad builds have been shipped and releaseduty must stop users from updating to these builds. Here’s the suggested process:

1. Click on the big red button at the top right corner of the page: This will turn off all updates on this channel. This means any user with any build will be told there is no new update.

2. Figure out what is the ID of the last good build.

3. Schedule a rule change to that build. Let it be enacted (this may require signoffs from several teams).

4. Turn updates back on. From now on, users will update to the most recent good build.

## Once a new build contains the fix¶

1. Schedule a rule change to:

• *-latest on mozilla-central

• the new build on devedition and mozilla-{beta,release}.