[Nexus 5 Q&A, Help & Troubleshooting] Thatoo:
Hello everybody,

I'm coming back to you so soon.

However, it's for a great news. I have FFOS et Ubuntu both install on my Nexus 5! It went so smooth that I'm really impressed and I don't see any problem for anyone to install it even non developper.

I want to thank you because I'm really happy.

I'm going to describe what I did yesterday night to install it to confort other geek newebe to try.

Be free,

---------- Post added at 10:48 AM ---------- Previous post was at 09:49 AM ----------

HOW TO INSTALL FFOS on your NEXUS 5 with MultiROM (Tuto for Beginner)

Hello dear excited non developer free fellow,

If like me, you want to try Mozilla FFOS on a phone and are tempted by trying a multiboot system on a Nexus 5, here is how I did, in just one evening.

First, I discovered this page, from Tasssadar

http://xdaforums.com/google-nexus-5/orig-development/mod-multirom-v24-t2571011

and then, this one, well the one you are coming from actually, from Vosky,

http://xdaforums.com/google-nexus-5/development/nightly-firefox-os-t2960953

I read the first page of Tassadar thread, and I didn't understand anything! It's normal if you do to, there are many words you need to get familiar with. Read it (not more than the first page for now), don't worry, we will come back to it later.

Then, you have to read all Vosky's Thread from page 1 to 9 (maybe after will be good too but at the date I'm writing, they are not written yet :). A lot of your questions will be answered. Don't assume that my explanations will be enough, you need to have a bigger picture of the process, you need to read all these pages.

First, it gets clearer how you'll download FFOS. You have to download from http://ffos.vosky.fr/ from the Recovery column. Today, saturday 2015/05/09 you have three choices, two quiet stables versions called "Pre-releases", V2.1 is the one to choose if you don't have Android Lollipop, and V2.2 if you have Android Lollipop, then, if you want to try the last features and help to detect bug, you can go for the last "Nightly builds" which are the latest work done by Mozilla's team on FFOS 3.0.

Good, now you need to go back reading Tasssadar's Thread. If their are still word that you don't understand, check what they mean. I didn't read much of this one because I decided to go for the easiest way. I followed the "Installation Via MultiROM Manager app". On the page of the app,

https://play.google.com/store/apps/details?id=com.tassadar.multirommgr

there is a great video. You need to watch it before going further.

If you are as newebe than me in this case, after installing the app, you'll have a red warning saying something like "MultiROM Manager app couldn't get root access". No worries, you just need to unlock and root your Nexus 5.

For That, I follow Chainfire's Thread here,

http://xdaforums.com/google-nexus-5/orig-development/nexus-5-cf-auto-root-t2507211

and this very precise video,

http://www.xda-developers.com/how-to-root-and-unlock-the-google-nexus-5-xda-developer-tv/

I know it works for Android Lollipop V5.0 and V5.1 but earlier version, sorry, I don't know. Watch the video a first time entirely and then, watch it and pause after each step to catch up what they are doing. It's easy and very well explained. You'll need to download CF-Auto-Root here https://autoroot.chainfire.eu/ . Look for the download link at the line Nexus 5.

Now, you can go back to the previous video, the one about MultiROM Manager app that you find here, remember,

https://play.google.com/store/apps/details?id=com.tassadar.multirommgr

As you watch entirely before, you can follow it step by step, pausing sometime to catch up what they are saying. Read again "Installation Via MultiROM Manager app" paragraph on Tasssadar's Thread if a warning Kernel: doesn't have kexec-hardboot patch! in red letters appears. I install the default one called Stock 5.1 if I remember well (I have Android 5.1 installed on my Nexus 5).

Read again the beginning of my post to choose the FFOS version you need to download.

What is not said in the video is that when the download is finished, and he is going to Install, he is in an environment we are not so familiar, because they didn't explain earlier what it is. It's the recovery mode. You reach it after shutting down your phone and start your phone with pushing the down volume button. You'll find the little robot you've met earlier to Install CF-Auto-Root, you choose Recovery mode with up or down volume and select it with power button, then you will recognize what he is saying in the video... clicking on "Advance" and stuff.

The end is so easy, as far as you know where you put your zip file of FFOS in your Nexus 5.

Enjoy!

And if you want to install Ubuntu Touch, I don't need to give you any explanation, it's so easy. You just go back in your Android, in MultiROM Manager app and after choosing the Ubuntu you want, you click on Install.

I guess, my only request would be to ask our great devs Vosky and Tasssadar to work together in order to offer us a so well integration of FFOS than Ubuntu Touch inside the MultiROM Manager app. It would be perfect!

Don't forget to Thank Vosky, Tasssadar and Chainfire by clicking on the "Thanks" button (a thumb) at the bottom of their first post on their Thread, the button will become yellow. They are doing a great job! Tell them!

Now, if you have a problem to install FFOS or Ubuntu Touch on your Nexus 5, don't come after me, I can't help more than that. However, I'm sure if you ask a polite question on this Thread that has not been yet answered thousands time, you'll get a quick answer!

Enjoy freedom.

[Now, I have to figure out how to import my contact into Mozilla FFOS V3.0 from my Mozilla Thunderbird 31.6 without being friend of Google, and that my dear seems way much more complicated. A simple usb cable and a sync or even import button are out of dream today... how weird!]

HOW TO UPDATE your FFOS ROM !

It's not more complicated than installing. Download here, http://ffos.vosky.fr/ , the FFOS version you want, in the recovery column. Copy it in your phone.

You return in the recovery mode. You reach it after shutting down your phone and start your phone with pushing the down volume button. You'll find the little robot you've met earlier again, you choose Recovery mode with up or down volume and select it with power button, then you have to follow this path : click on Advanced - MultiROM - List ROMs - select your previous FFOS ROM and click on Flash ZIP - select the zip of the FFOS ROM you've just downloaded - SWAP- click on Reboot.

You've just updated your FFOS ROM!