Sailfish OS Saapunki Update is now available for the Nexus 4(Mako). Saapunki Update which has been released for the Jolla Phone a few weeks ago brings new features like Folder Support in the App Launcher, Web Browser Improvement and many more!

Jolla also said that they are still working on the Sailfish OS Hardware Adaptation Development Kit, which will existing devices based on CyanogenMod 10.1.

We are still working on the SailfishOS Hardware Adaptation Development Kit, which describes how to port SailfishOS to existing devices based on CyanogenMod 10.1. Newer versions of CM will be supported eventually. We’ll publish the HADK in the very near future.

Remember: This is not the final version so you might experience some bugs.

Sailfish OS Nexus 4System->Display->Adjust automatically)

Release notes/Known issues in EA3:
* EXPERIMENTAL: Jolla Store is now available, you’ll need to register
with your Jolla Account
* NOTE: Booting Nexus 4 with SIM first, and then removing SIM (or
vice versa) may cause Jolla Store to see it as two different devices and
cause potential breakage. Please stick to either SIM available or not
when running SailfishOS on Nexus 4.
– There may be a bug with oFono RIL support that makes it not report
IMEI value causing this and will be sorted out in a later update.
* DISCLAIMER: Using Jolla Store with Jolla Account might break
applications on your other devices, use it at your own risk!
* Android support is not available from the Store, even if you can
see Android apps listed (those will be removed eventually from store view)
* This functionality means that image comes with only minimal set of
pre-installed apps. Use Store to download the ones you need.

* The backlight is dark during first launch, but can be fix by switching
the currently-not-working ambient light sensor off (uncheck
Settings->System->Display->Adjust automatically)
* When display is blanked, power management sets WLAN to the lowest speed state
* Can be noticed in a SSH-over-WLAN session
* Chat notifications may arrive with a slight delay.

Release notes/Known issues in EA2:
* To securely power off the device, during its boot-up keep Volume Down
pressed to enter bootloader mode. Using volume keys, select “Power off”
option, then press the Power key
* If not auto-detected from SIM, set-up mobile internet data settings
via Settings->System->Mobile network->(long tap on the first toggle-item
under “Mobile data” section)->(enter settings given by your operator)

Nexus4-specific known issues reported by the adopters (in EA2):
* Chinese text input not working
* Localhost name is shown as Jolla
* Switching between the online and offline status in the status
information setting takes very long and often doesn’t switch properly
* Google contacts which are put together with different information, are
now split up into several contacts in Sailfish
* The battery display seems to be a bit buggy because it loses about 15%
from one second to another
* The calendar overview when filled with events seems to be a bit laggy
* The email push is not working correctly, I do not receive any emails
until I push the refresh button
* Splitting words in the German translation: e.g. in the open apps on
the home screen it says: “Kurzzeitmesse” and in the next line the
missing “r”
* NOTE: all other Sailfish OS issues have already been reported on TJC –
http://together.jolla.com – and many of them were fixed in this 1.0.5.16
release

Release notes/Known Issues in EA1:
* Developer mode is activated at all times
* There has been no throughout testing of telephony related
functionality (roaming, airplane mode, etc) and any use of this
functionality is at your own risk
* Sensors, Device lock, Reset device, Bluetooth, USB control + MTP,
Bluetooth, WLAN hotspot, Camera (photography, video recording), and
video playback is not supported in this release
* The image SW is not currently upgradeable, nor is any typically
licensed multimedia codecs (MP3, etc), HERE maps, Android application
compatibility layer, or word prediction for virtual keyboard preinstalled
* This image does not include any typically licensed multimedia codecs
(MP3, etc), HERE maps, Android application compatibility layer,
Microsoft Exchange support, or word prediction for virtual keyboard
preinstalled
* It is not possible to double-tap to wake up the device
* Powering off device puts it into a state of deep slumber; possible to
get out of by holding power button and volume down key with a bit of
persistence
* Fingerterm keyboard is not at its best due to the portrait-only mode
* FPS drop while scrolling in homescreen due to non-batching when
rendering of application icon grid
* Icons/graphics appear unproportionally small in browser toolbar, time
select widget, and Settings favourite icons
* Multiboot/Multirom is not supported yet but we’re happy if you would
like to teach/help us

Fixes after EA2:
* Watermark removed
* Phone-call audio volume can now be changed with the help of volume buttons
* Improved responsiveness when waking phone up with the power button
* Settings->System->Developer Mode or About Product do not freeze anymore
* Reverted to the original (non-Silica) Fingerterm

Fixes after EA1:
* Phone-calls with audio work
* Timers and alarms (with device powered on) work
* HTML5 video+audio works in Browser (tested splash on http://jolla.com )
* Update is based on SailfishOS version 1.0.5.16

To install this release of SailfishOS on a Nexus 4 device:

* Install adb and fastboot
a. Debian/Ubuntu: apt-get install android-tools-adb android-tools-fastboot
b. Fedora: yum install android-tools
c. Mac OS X: Install Homebrew from http://brew.sh/, then: brew install android-platform-tools
d. Windows: See http://wiki.cyanogenmod.org/w/Doc:_fastboot_intro for instructions

* Install Android 4.2.2 (JDQ39) to your Nexus 4
a. Instructions here: https://developers.google.com/androi…s#instructions
b. Download links can be found here: https://developers.google.com/androi…ges#occamjdq39

* Download CyanogenMod 10.1.3 for your Nexus 4
a. Perform Factory Reset and wipe contents of the /data/ partition in case of leftovers from previous ROMs
b. The file you want to download is cm-10.1.3-mako.zip
c. Download links can be found here: http://wiki.cyanogenmod.org/w/Install_CM_for_mako

* Download the SailfishOS for Android image for “mako”
a. The file you want to download is http://releases.sailfishos.org/sfa-e…0.7.16-EA3.zip
b. Another flavour filled with demo content: http://releases.sailfishos.org/sfa-e…mo-content.zip

* Install CyanogenMod 10.1.3 on your Nexus 4
a. Follow the instructions at: http://wiki.cyanogenmod.org/w/Install_CM_for_mako

* After flashing the “cm-10.1.3-mako.zip” file, flash the SailfishOS .zip file in the same way (“on top of it”)
* Reboot bootloader, SailfishOS should boot and be visible

We recommend reading through http://jolla.com/guide/ – some parts may not apply to Nexus 4.

If you want to go back to normal CyanogenMod:
a. Boot into recovery mode
b. Choose “Wipe data / factory reset”
c. Flash cm-10.1.3-mako.zip
d. (to go back to SailfishOS, flash the SailfishOS .zip on top of it)

If you want to go back to stock Android:
a. Download the stock image from 
https://developers.google.com/android/nexus/images#occam
b. Extract the package and follow the instructions for reflashing/re-locking

To SSH into your device via USB (Linux)
1. Enable remote connection in Settings->System->Developer mode
2. Set your USB interface on host machine to IP 192.168.2.2
3. ssh nemo@192.168.2.1
4. Use the password from developer mode to log in
5. Use the ‘devel-su’ command with the same password in order to gain root
6. To SSH over WLAN, use IP listed in developer mode under “WLAN IP address”

Read Sailfish OS release notes:
https://together.jolla.com/question/45064/release-notes-software-version-10716-saapunki/

We will all meet in #sailfishos-porters (note, new location) on 
irc.freenode.net and please use us (thp, alterego, Stskeeps, lbt, 
sledges) to work together, report any bugs, graphical glitches or 
missing functionality that you find, which are not included in the 
release notes above. You can also find the hardware adaptation source 
code at http://github.com/mer-hybris
 

Image Credit: Mariano Foltron