This plugin will unlock any locked layers on the current artboard (so you can select and modify them). You can then run the plugin again to re-lock those layers.

1. Download the repository using this link
2. Unzip the files from the ZIP
3. In Sketch 3, select Plugins > Reveal Plugins Folder... from the menu bar
4. Put the (downloaded, unzipped) folder in here
5. Rename it Sketch Toggle Locked Layers

1. Run the Toggle Locked Layers plugin to unlock any locked layers on your current artboard (⌘⌃L)
2. Make your changes to any of your (recently) locked layers
3. Run the Toggle Locked Layers plugin again to re-lock the layers (⌘⌃L)

Tested on Sketch 3.2

Copyright 2014 ribot

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.