[ROM][SM-G850W][sltecan] CyanogenMod 13.0 UNOFFICIAL for the Galaxy Alpha (S801)

[kyasu]

CyanogenMod is a free, community built, aftermarket firmware distribution of Android 6.0 (Marshmallow), which is designed to increase performance and reliability over stock Android for your device.

#include <std_disclaimer.h>

/*
 * Your warranty is now void.
 *
 * We are not responsible for bricked devices, dead SD cards,
 * thermonuclear war, or you getting fired because the alarm app failed. Please
 * do some research if you have any concerns about features included in this ROM
 * before flashing it! YOU are choosing to make these modifications, and if
 * you point the finger at us for messing up your device, we will laugh at you.
 *
 */

This is an unofficial CyanogenMod 13.0 build for the SM-G850W which is a Snapdragon variant of Galaxy Alpha and has an unlocked bootloader.
This ROM does not work with Exynos variant (SM-G850F) nor a locked bootloader (SM-G850A).

Instructions

1. Make sure that your SM-G850W has the Lollipop bootloader and modem (The last installed stock ROM must be 5.0.2).
2. Flash TWRP recovery via Odin.
   • Use Odin without 'Auto Reboot' option.
   • After flashing TWRP via Odin, shutdown your phone (for example remove battery). Don't reboot to the stock image which restores the stock recovery.
3. Boot to TWRP recovery (Vol UP + Home + Power).
4. Optional: Do nandroid backup
5. Wipe data / Factory Reset
6. Install the ROM (CM zip).
7. Install the Google Apps.

Enjoy!

Known Issues

Everything seems to work fine.

• None

Downloads

All: https://www.androidfilehost.com/?w=files&flid=42013
LineageOS 13.0: lineage-13.0-20170122-UNOFFICIAL-sltecan.zip
CyanogenMod 13.0: cm-13.0-20161223-UNOFFICIAL-sltecan.zip
TWRP: twrp-3.0.3-0-sltecan.tar
Latest Modem: G850WVLU1BPG1_G850WOYA1BPG1_bootmodem.tar

Sources

https://github.com/kyasu/android_kernel_samsung_msm8974
https://github.com/kyasu/android_device_samsung_sltecan
https://github.com/kyasu/android_vendor_samsung_sltecan

XDA:DevDB Information
[ROM][SM-G850W][sltecan] CyanogenMod 13.0 UNOFFICIAL for the Galaxy Alpha (S801), ROM for the Samsung Galaxy Alpha

Contributors
kyasu
ROM OS Version: 6.0.x Marshmallow
Based On: CyanogenMod/LineageOS

Version Information
Status: Stable
Current Stable Version: 2017-01-22
Stable Release Date: 2017-01-22

Created 2015-10-22
Last Updated 2017-01-22

 

[kyasu]

Reserved

 

[modpunk]

Nice! Does the network operator search work without modifications?

#CONFIG_KERNEL_LZO not set
CONFIG_KERNEL_XZ=y

Will save you 2-3MB in the boot image. Which is very helpful to build e.g. twrp recovery. You can enable a lot more features ...

 

[Blubberor]

maybe important for others...
isn't there a unlocked version of g850a (general threads of alpha). will this snapdragon equipped galaxy alpha work with cm12.1 snapdragon or what are other differences of G850A and G850W?

 

[kyasu]

Nice! Does the network operator search work without modifications?

#CONFIG_KERNEL_LZO not set
CONFIG_KERNEL_XZ=y

Will save you 2-3MB in the boot image. Which is very helpful to build e.g. twrp recovery. You can enable a lot more features ...

Network operator search, call echo cancellation, 4K video, and more are all working well.
Qualcomm's Snapdragon is developer friendly.

 

[kyasu]

maybe important for others...
isn't there a unlocked version of g850a (general threads of alpha). will this snapdragon equipped galaxy alpha work with cm12.1 snapdragon or what are other differences of G850A and G850W?

G850A has a locked bootloader and TWRP recovery/custom ROM cannot be installed.
G850A user needs a root method and Safestrap (Bootstrap / Recovery for locked bootloader).

 

[cell2011]

So what root/recovery method could we get for G850A. Any way of unlocking bootloader for this phone? I see the SRS root method has worked for some but not for all

 

[kyasu]

So what root/recovery method could we get for G850A. Any way of unlocking bootloader for this phone? I see the SRS root method has worked for some but not for all

To my knowledge, there is no root/recovery method for G850A. This is the reason I got G850W instead of G850A.

 

[modpunk]

Network operator search, call echo cancellation, 4K video, and more are all working well.
Qualcomm's Snapdragon is developer friendly.

Yes, echo cancellation is done by the ES chip. The G850F doesn't have set and completely does it in software. However it works fine in the meantime.

Qualcomm is open source in that area which is great. They are the opposite if it comes to open source graphics drivers.

 

[ptl4ever]

thanks for the twrp file

 

[ptl4ever]

screenshots


can anyone please share some screenshots ?

 

[kyasu]

cm-12.1-20151120-SNAPSHOT-YOG7D-sltecan.zip

A new version is available. See the first post.

 

[leripe]

So everything that doesn't work on the exynos alpha cm already works on this version?

 

[Levistras]

Thanks for doing this! Will install and let you know if any issues.

 

[kyasu]

So everything that doesn't work on the exynos alpha cm already works on this version?

Yes.
Snapdragon Alpha CM is far better than my Exynos Alpha CM (http://xdaforums.com/galaxy-alpha/development/5-1-x-cyanogenmod-12-1-unofficial-t3145217).

 

[leripe]

Yes.
Snapdragon Alpha CM is far better than my Exynos Alpha CM (http://xdaforums.com/galaxy-alpha/development/5-1-x-cyanogenmod-12-1-unofficial-t3145217).

Thanks for the info.
Not a surprise, though. Phones with snapdragon are easier for porting.

 

[kyasu]

CM13.0

CM13.0 is available. See the first post.

 

[krwilson]

Suggestions for what Google Apps to use? It's been a while since I have flashed a ROM, this looks great, and I just picked up an Aplha.

 

[kyasu]

Suggestions for what Google Apps to use? It's been a while since I have flashed a ROM, this looks great, and I just picked up an Aplha.

I'm using Open GApps (http://opengapps.org/) micro.

 

[krwilson]

I'm using Open GApps (http://opengapps.org/) micro.

May I ask what version you use? The ARM 64bit? Thanks and I hope I am done with my dumbass questions.

OK...I did some reading and see that it is ARM 32 bit for most devices.