apps/
build/
dev_apps/
keyboard/
locales/
shared/
tools/
git clone https://github.com/your-username/gaia.git
3. Add the upstream
cd gaia
git remote add upstream https://github.com/mozilla-b2g/gaia
4. Build the DEBUG Profile
DEBUG=1 make
/path_to_firefox -profile ../gaia/profile-debug
5. Run it!
cd path/to/gaia
git checkout master
git pull upstream master
2. Next, check out a new branch to create your fixes on:
git checkout -b my-code-fix