Install 2.5 Developer Preview (b2gDroid) on your Android Device

Firefox OS is one of Mozilla’s revolutionary project that still is on developing process. Many developers, QA Engineers are still working to bring more satisfactory features and facilities toward open-source lover. But unfortunately, MOST of the developers don’t have the Firefox OS device to participate on developing. So in order to do so, the community has figure out another way to make available to contribute on this open-source project.

“Firefox OS 2.5 Developer Preview” is an experimental app that lets you use Firefox OS on your android phone. Here, I’m going to share A-Z procedure of how to install Developer Preview on your Android phone.

Note: Since I’m using ‘Huawei y5c’ device, some steps may be vary on other Android Device. So, It would be best to figure out those steps by yourself. :)


First, download ‘Firefox OS 2.5 Developer Preview’ apk file.

Screen Shot 2015-12-21 at 12.01.48


After downloading, take the apk file to phone. Go to ‘file manager’, click on downloaded apk file and then press ‘Install’. It’ll take time to install.



When the whole installation process is done, press ‘Done’ and exit from file manager.Screenshot_2015-12-21-18-31-41 (copy)


Now here comes the tricky one! How to activate fxOS dev Preview?

  1. Go to ‘Settings’.
  2. Then go to ‘Home Screen Style’.
  3. Select the other theme and press ‘Apply’.

Screenshot from 2015-12-21 11:37:49

You’ll face an option to select a home app. click ‘Firefox OS developer preview’ and press ‘Just Once’.

Screenshot_2015-12-20-23-12-05And then, your Firefox OS 2.5 environment is ready on your Android Device. No need to buy or collect Firefox OS mobile device.

Screenshot from 2015-12-21 11:31:24

How to switch back to your original home screen?
Now, when you’ll be on developer preview, just scroll down and go to ‘settings’. There’ll be two settings(one is Firefox OS’s and other is Android’s), click on Android’s settings.

Screenshot from 2015-12-21 11:26:12

Then again follow Step-4.

That’s it!! a very simple procedure about installing and preparing your Android Device into Firefox OS. With this, you can now explore, test some features, find bugs, file bugs on bugzilla and contribute with global community.

Happy Contributing.. :)

How to create new profile in firefox

Hello Everyone,

Today we are going to learn how to create a new profile in firefox.


At first download any firefox build, unzip it and open the folder. 


The folder looks like that. Now if you have selected any item please deselected it. After that press and hold Shift key and click Right button of your mouse on the white portion of your window.Untitled

Now click on Open command window here.


A command window will pop-up. Now type “firefox -p -no-remote” without quote. 


Now click on Create Profile…


A profile wizard will appear. Now click Next.


Now Enter new profile name and click finish.


Now select your newly created profile and Start your program.

(In this case Start Nightly)


Your browser should open with selected profile.

Happy Contributing:)

How to Download Firefox builds form Mozilla HTTP Server

Hello Everyone,

Today we are going to learn how to download firefox builds from Mozilla HTTP Server.

Those who are new to Mozilla QA(Quality Assurance) they have to know how to download the correct build. So lets started with a bug from Bugzilla.

That’s a bug report looks like. Now we are studying this case as a demo. Don’t worry about the meaning of some terms like whiteboard, Target Milestone, Blocks etc. Now have a look on Reported & Platform terms.

Capture4The platform section indicates the Operating System and its architectural bit. In this case the OS could be anything (windows, linux etc) and it’s system type 64/32 bit.

Capture3The Reported Section indicates the date and time when the bug has been submitted to bugzilla. In this case the date is 25th of March, 2015. So to examine the bug we have to download a 32/86 bit build of that date. Here we are downloading a Firefox Nightly Build because in general we are verifying bugs in nightly build.

Mozilla has 4 Firefox Builds for desktop.


This is Mozilla HTTP server link. Now go to this link.


Now go to the nightly folder. Then go to the folder named 2015.


Then go to the folder named 03. (Here number indicates the month).


Then find the exact date folder. In our case it will be 2015-03-25-mozilla-central. (Note: Central=Nightly & Aurora=Developer Edition).


Go to the folder and search for the OS which you are currently worked on. I have Windows based operating system, so for this particular case I choose



Extract the .zip file and you are ready to go.

Happy contributing :)