To get a new password follow these steps. Warning: Any data you have on the server will be erased when you reset your password. Your other devices will stop synchronizing unless you update them with the new password. Click the menu button and choose Options. On the Sync tab, click Sign in to open the Sign in page. On the Sign in page, click Forgot password? Firefox will send you a reset email. Follow the instructions in your reset email to change your password. Now you're ready to go. Remember to update your password on each of your synchronized devices by following the steps below: Click the menu button and choose Options. On the Sync panel, click on Sign in to open the Firefox Sync page. Enter your new password and click Sign in.