Assuming you have git, sed, and *sh, perform the following:
git clone https://github.com/WhisperSystems/Signal-Desktop && cat Signal-Desktop/js/background.js | sed 's/textsecure-service-staging.whispersystems.org/textsecure-service-ca.whispersystems.org:4433/g' | sed 's/whispersystems.textsecure-attachments-staging.s3.amazonaws.com/whispersystems-textsecure-attachments.s3.amazonaws.com/g' > temp; cat temp > Signal-Desktop/js/background.js; rm temp;
In Google Chrome:
- Options in top right >
More Tools
>Extensions
- Click
Developer mode
- Click
Load unpacked extension...
- Browse to
/path/to/Signal-Desktop
and clickOpen
- Use Signal the way that you use Signal.