How to solve ZenFone 2 automatically shutdown

My ZenFone 2 will automatically shutdown even 20% battery remaining, how can I do?
It’s a known issue and ASUS fixed it in the latest system update. Please refer to the following instructions to calibrate your battery firmware.

1. Update to version 2.20.40.x which is the latest system update for ZenFone 2. 
2. Shutdown your phone then charge it using an ASUS charger and its ASUS USB cable for at least 8 hours.
3. Restart your phone and try again to see if there’s any improvement.

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[ROM][Full Firmware] ASUS ZenFone 2 ZE551ML Marshmallow WW-4.21.40.223

How to OTA update ? (Go to settings>About>System Update>Check for Update)
How to update Manual ? Place to Internal Storage>Restart>Click Update
How to update via ADB sideload ? Here 

ZENFONE 2 ZE551ML firmware: 

WW VERSION
WW-4.21.40.223

Description

ASUS ZenFone 2=ZE551ML(Z00AD/Z00ADA/Z00ADB/Z00ADC) software Image: V4.21.40.223 for WW SKU only* (andriod M) Improvement Item: 1)Improve Wi-Fi/Bluetooth stability   2)Update Security patch 3)Improve system stability  4)Support India SOS call (India only) Steps of Update:  1.Check software version of your device** 2.Download device software and Update SOP (From “Manual” Item) 3.Only apply to same SKU update, Example: WW->WW, CN->CN, . 4.Software update cannot transfer the software SKU and downgrade the software version. 5.Wrong SKU may cause update failure, please update the same SKU version only. *How to know the device model?  Path: Settings->About-> Model number Example: ASUS_T00I **How to know the device software version?  Path: Settings->About-> software information->Build number ***System upgrade may cause part of data missing, please buckup your important data before system upgrading.

File Size	1.18 GB                                                2017.01.10  update
Download from	Global

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Official CyanogenMod 14.1 Nightly Builds for ASUS ZenFone 2 (Z00A/Z008)

CyanogenMod is based on the Android Open Source Project with extra contributions from many people within the Android community. It can be used without any need to have any Google application installed. You will need to provide your own Google Applications package (gapps). CyanogenMod does still include various hardware-specific code, which is also slowly being open-sourced anyway. Today zenfoneblog will post about How to Flash CyanogenMod 14 for your ZenFone 2. Original Post from jrior001 on XDA Here.

What's Not Working/Bugs:

• VIDEO ENCODER/DECODER ISSUES: This results in green lines on videos/pictures taken using the Intel HW encoder/decoder and other playback issues dependent on video formats. See the list below:
• Snapchat: thin greeen line tends to appear on recorded videos for snapchat
• Asus Pixelmaster Camera App: Super resolution mode does not work. Turning off "Optimizations" from settings clears up any green line issues.
• Some video formats do not play as expected
• FM Radio is unsupported.
• audio is a little weird in Real Racing 3.
• sim 2 cannot be disabled (this is true for all CM builds on non qualcomm hardware)
• Other than Fugu (Nexus Player TV box) there are no Vendor released M x86/x86_64 builds in existance. You may experience some issues with GAPPS and some known apps not loading or working correctly. Below is a list of KNOWN apps that do not currently run on CM13 based x86 Zenfone 2 builds :
• Ingress, Polaris Office, Chase Mobile, Showbox...
• DRM content is currently broken

Download CyanogenMod 14:

1. Z00A/ZenFone 2 ZE551ML Download
2. Z008/ZenFone 2 ZE550ML Download

Download TWRP Recovery:

1. Z00A Download
2. Z008 Download

Instructions:

1. Unlock Bootloader!
2. Download the zip(s).
3. Install Appropriate FW base (STOCK MM 4.21.40.xx base is required) 
4. Install a compatible Recovery
5. Perform a NANDroid backup of your current ROM (Optional)
6. Wipe data & cache partitions of your device (required when coming from stock!).
7. Flash CyanogenMod.
8. Optional: Install the Google Apps addon package. Open Gapps x86 7.1

Credits to jrior001 and Original post can be see on XDA Here

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[Full Firmware] Zenfone 2 ZE550ML V2.20.40.136

 

How to OTA update ? (Go to settings>About>System Update>Check for Update)
How to update Manual ? Place to Internal Storage>Restart>Click Update
How to update via ADB sideload ? Here 

Download only FOTA Files Here
 

ZENFONE 2 ZE550ML Z008 firmware: 
WW VERSION
Version WW-2.20.40.136  (WW) 
 

Description

Release Note ASUS ZenFone 2=ZE550ML (Z008B/Z008C/Z008D) software Image: 2.20.40.136 for WW SKU only* Improvement Item: Update ASUS ZenUI Launcher App For more information please refer to: TW：http://www.asus.com/zentalk/tw/ReleaseNotes WW：http://www.asus.com/zentalk/ReleaseNotes CN：http://zentalk.asus.com.cn/ReleaseNotes Steps of Update: 1. Check software version of your device** 2. Download device software and Update SOP (From “Manual” Item) 3. Only apply to same SKU update, Example: WW->WW, CN->CN, . 4. Software update cannot transfer the software SKU and downgrade the software version. 5. Wrong SKU may cause update failure, please update the same SKU version only. *How to know the device model? Path: Settings->About-> Model number Example: ASUS_T00I **How to know the device software version? Path: Settings->About-> software information->Build number ***System upgrade may cause part of data missing, please buckup your important data before system upgrading.

File Size	1.13 GB                                                2015.01.07  update
Download from	Global

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[Full Firmware] Zenfone 2 ZE551ML V2.20.40.160

 

How to OTA update ? (Go to settings>About>System Update>Check for Update)
How to update Manual ? Place to Internal Storage>Restart>Click Update
How to update via ADB sideload ? Here 

Download only FOTA Files Here
 

ZENFONE 2 ZE551ML Z00A firmware: 
WW VERSION
Version V2.20.40.160 (WW)
 

Description

Release Note ASUS ZenFone 2=ZE551ML(Z00AD/Z00ADA/Z00ADB/Z00ADC) software Image: 2.20.40.160 for WW SKU only* Improvement Item: Update ASUS ZenUI Launcher App For more information please refer to: TW：http://www.asus.com/zentalk/tw/ReleaseNotes WW：http://www.asus.com/zentalk/ReleaseNotes CN：http://zentalk.asus.com.cn/ReleaseNotes Steps of Update: 1. Check software version of your device** 2. Download device software and Update SOP (From “Manual” Item) 3. Only apply to same SKU update, Example: WW->WW, CN->CN, . 4. Software update cannot transfer the software SKU and downgrade the software version. 5. Wrong SKU may cause update failure, please update the same SKU version only. *How to know the device model? Path: Settings->About-> Model number Example: ASUS_T00I **How to know the device software version? Path: Settings->About-> software information->Build number ***System upgrade may cause part of data missing, please buckup your important data before system upgrading.

File Size	1.13GB                                                                2015.12.31 update
Download from	Global

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[ROM] Echoe Zen ROM for ASUS Zenfone 2

Today ZenfoneBlog will share about Echoe Zen ROM v1. This ROM is developed by Friedrich420  at EchoeROM website Here. About Echoe Roms were released for the first time on July 21st 2013. Since then, flashaholics from around the world have adored the idea that Echoe stands for. Echoe has become a trademark of customization of the Samsung Flagship Android Phones. Since then, things have changed a lot and besides perhaps the most choice-packed roms, echoe has began offering an incredible collection of its own AEL Kernels. None of this would have been possible without the thousands of dedicated Echoe Fans and of course without all those beautiful people below who have been part of the Echoe Family at one point or another.

DWYOR

Features :

• This ROM is based on the newest Official Asus Android 5.0 firmware: 2.20.40.160
• Fully deodexed rom
• Xposed ready
• Pre- rooted with SuperSU v2.52
• Stericson busybox 1.24.1
• Modded SystemUI with the following options: 
• 3Minit Battery, 
• Center Clock, 
• Potato Gradient Mod (please use the app "Gradient" to control the colors and transparency of your status bar)
• Enabled the amazing Net Traffic Meter Mod (go to settings/ display and its the last option)
• Unlocked more options in the volume panel (i.e. media volume bluetooth volume, etc)
• Re- added the sound/volume bar back to the Power Menu
• Modded Settings with the "Echoe Customization Center' for quick access to useful tools
• Removed the ANNOYING“External Storage Inserted" message you get on every reboot
• Moderately Debloated (there's a LOT of crapps in this system)
• Lots of fixes to the stock base (i.e. writing to external card, etc)
• Viper4Android
• Adaway
• Faster GPS
• CPU Spy
• Simple Reboot
• Speed and Battery tweaks

Screenshoots:

Installation Instructions:

1. Download The ROM : HERE
2. You need a custom recovery (twrp works just fine) - TWRP Tutorial Here
3. No need to be rooted before flashing this (you will be rooted by the rom)
4. Go to Recovery
5. Flash the rom
6. Please give it 5-7 minutes to go through the flashing process
7. Reboot, wait a few minutes and enjoy

Credit to Friedrich420  at EchoeROM

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[Full Firmware] Zenfone 2 ZE551ML V2.20.40.156

 

How to OTA update ? (Go to settings>About>System Update>Check for Update)
How to update Manual ? Place to Internal Storage>Restart>Click Update
How to update via ADB sideload ? Here 

Download only FOTA Files Here
 

ZENFONE 2 ZE551ML Z00A firmware: 
WW VERSION
Version V2.20.40.156 (WW)
 

Description

Release Note ASUS ZenFone 2=ZE551ML(Z00AD/Z00ADA/Z00ADB/Z00ADC) software Image: V2.20.40.156 for WW SKU only* Improvement Item: 1)Several Apps update 2)Fix icon display issue in Settings 3)Improve the stability of Snap View 4)Improve the stability of Lockscreen 5)Improve the stability of Camera  6)Fixed WiFi Hotspot issue 7)Fixed Data transmission issue 8)Fixed Bluetooth transmission issue 9)Fixed SD card related issue 10)Extend the shutdown mimunes by power key press 11)Improve the compatibility of apps 12)Fixed calling issue in Singapore 13)Fixed 3G cannot camp to H plus in some countries 14)Support Zawgyi Myanmar string translation 15)Move Screenshot settings to the first layer 16)Allow Clean Master S key to be uninstalled 17)Improve ringtone chooser stability 18)Improve the stability of Email App 19)Modify Italy PosteMobile MMS APN setting issue New add: 1)Add Game Center 2)Add new wallpaper 3)Add Theme Store For more information please refer to: TW：http://www.asus.com/zentalk/tw/ReleaseNotes WW：http://www.asus.com/zentalk/ReleaseNotes CN：http://zentalk.asus.com.cn/ReleaseNotes Steps of Update: 1. Check software version of your device** 2. Download device software and Update SOP (From “Manual” Item) 3. Only apply to same SKU update, Example: WW->WW, CN->CN, . 4. Software update cannot transfer the software SKU and downgrade the software version. 5. Wrong SKU may cause update failure, please update the same SKU version only. *How to know the device model? Path: Settings->About-> Model number Example: ASUS_T00I **How to know the device software version? Path: Settings->About-> software information->Build number ***System upgrade may cause part of data missing, please buckup your important data before system upgrading.

File Size	1.13GB                                                                2015.12.24 update
Download from	Global

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How to Downgrade ASUS ZenFone 2 Firmware

Yesterday ASUS gave us recent update in ZenFone 2 ZE551ML 2.20.40.156 and ZenFone 2 ZE550ML 2.20.40.135. Personally I don't like this update because Now I can't use third party Themes, which you must download from Theme Store for free/paid themes from ZenUI designer and I don't see any good themes except Speed Themes :). This tutorial is applicable for Downgrading Firmware or even back to stock rom. Please do it carefully and DWYOR (Do it with your own risk) because wrong move may cause the device brick :)

Resources:

1. ADB Fastboot Installer (Download Here if you don't have it)
2. ZenFone 2 Original Recovery.img, bootloader.img, boot.img (ZE551ML | ZE550ML)
3. ZenFone Firmware (ZE551ML | ZE550ML) <-select OS Android and download your firmware

How to Downgrade ASUS Zenfone 2 :

1. In this tutorial I will downgrade from 2.20.40.156 to 2.20.40.139
2. Download ADB and Install it
3. Download Recovery.img, bootloader.img, boot.img (lower version than your current version)->I download 2.20.40.97 - must lower than 2.20.40.156
4. Download Firmware (lower version than your current version) -> I download 2.20.40.139 version
5. Place Recovery.img, bootloader.img, boot.img to Downgrade Folder
   
6. Go to Fastboot Mode (Turn off device and press power+volume up) or conncet the device to pc/laptop at downgrade folder press shift+right click -> open command here and type adb reboot bootloader (need usb debugging activated)
   
7. Connect your Zenfone 2 to PC/Laptop
8. Type on CMD (press enter after each line):
fastboot flash fastboot droidboot.img
fastboot flash recovery recovery.img
fastboot flash boot boot.img
9. Enter recovery (Tutorial Here)
10. Select Apply update from adb
11. Open Ze551ml firmware folder and press shift+right click > open command here
12. Connect your Zenfone 2 to PC/Laptop
13. Type on CMD (press enter after each line):
adb sideload UL-Z00A-WW-2.20.40.139-user.zip
14. Factory Reset (To avoid a crash error, but not perform factory reset is ok)
15. Done

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How to Re-Lock Bootloader ASUS Zenfone 2

The trouble after unlock bootloader : Furthermore, such repaired Revised Product will not be covered under the warranty of the Original Product; the software of the repaired Revised Product will not be deemed the software of the Original Product and will not receive ASUS software updates. But we can re-lock the bootloader :D

DWYOR (Do it with your own risks)

Download Resources for Re-lock Bootloader :

1. ASUS Zenfone 2 RAW file (ZE551ML) (Download)(Pass: www.asus-zenfone.com)
2. ASUS Flash Tool 1.14 (Download)(Pass: www.asus-zenfone.com)
3. Download recovery.img, boot.img, droidboot.img (Download)

How to Re-Lock Bootloader:

1. Download files above
2. Install ASUS Flash Tool on your Computer/Laptop
3. Reboot your Zenfone 2 to bootloader (Power+volume up or Here)
4. Open Asus Flash Tool apps
5. Select Model Zenfone 2/ ZE551ML on Drop down menu
6. Select RAW File (Click on Box button)
7. Choose wipe data
8. Connect Zenfone 2 to Laptop/PC
9. Your device will be appear on device list
10. Click Start Button
11. Wait until Finish
12. Download ADB tool and install it (Download)
13. Reboot your Zenfone 2 to Bootloader again
14. Place recovery.img, boot.img and droidboot.img to a folder
15. Open the folder and press shift+right click > open command here
16. Connect your Zenfone 2 to PC/Laptop
17. Type on CMD (press enter after each line):
fastboot flash fastboot droidboot.img
fastboot flash recovery recovery.img
fastboot flash boot boot.img
18. Download Asus Zenfone 2 Ze551ml firmware (Download)
19. Enter recovery (Tutorial Here)
20. Select Apply update from adb
21. Open Ze551ml firmware folder and press shift+right click > open command here
22. Connect your Zenfone 2 to PC/Laptop
23. Type on CMD (press enter after each line):
adb sideload UL-Z00A-WW-2.20.40.97-user.zip
24. Done

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[Full Firmware] Zenfone 2 ZE551ML V2.20.40.150

 

How to OTA update ? (Go to settings>About>System Update>Check for Update)
How to update Manual ? Place to Internal Storage>Restart>Click Update
How to update via ADB sideload ? Here 

Download only FOTA Files Here
 

ZENFONE 2 ZE551ML Z00A firmware: 
CN VERSION
Version V2.20.40.150  (CN) 
 

Description

Release Note ASUS ZenFone 2=ZE551ML(Z00AD/Z00ADA/Z00ADB/Z00ADC) software Image: V2.20.40.150 for CN SKU only* Improvement Item: 1.Several Apps update 2.Fix icon display issue in Settings 3.Improve the stability of Snap View 4.Improve the stability of Lockscreen 5.Improve the stability of Camera  6.Fixed WiFi Hotspot issue 7.Fixed Data transmission issue 8.Fixed Bluetooth transmission issue 9.Fixed SD card related issue 10.Extend the shutdown mimunes by power key press. 11.Improve the compatibility of apps For more information please refer to: TW：http://www.asus.com/zentalk/tw/ReleaseNotes WW：http://www.asus.com/zentalk/ReleaseNotes CN：http://zentalk.asus.com.cn/ReleaseNotes Steps of Update: 1. Check software version of your device** 2. Download device software and Update SOP (From “Manual” Item) 3. Only apply to same SKU update, Example: WW->WW, CN->CN, . 4. Software update cannot transfer the software SKU and downgrade the software version. 5. Wrong SKU may cause update failure, please update the same SKU version only. *How to know the device model? Path: Settings->About-> Model number Example: ASUS_T00I **How to know the device software version? Path: Settings->About-> software information->Build number ***System upgrade may cause part of data missing, please buckup your important data before system upgrading.

File Size	1.03GB                                                                             2015.12.17 update
Download from	Global

WW/TW soon

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[ROM][Android 6.0] CyanogenMod 13.0 For ASUS Zenfone 2

CyanogenMod 13 will be the next version of the world’s most popular custom ROM for Android, and based on Android version 6.0 Marshmallow. Couple days ago XDA Senior member jrior001 succeed to build CyanogenMod 13 for ASUS Zenfone 2. The ROM is Boot-able but still in alpha stage with several bugs and maybe cause random problems but it's a huge steps to further development

How to Install CyanogenMod 13 on ASUS Zenfone 2:

1. You need Unlock Bootloader your device (Tutorial)
2. Make sure you have installed custom recovery (Tutorial)
3. Perform a NANDroid backup of your current ROM (Optional)
4. Wipe data & cache partitions of your device (required when coming from stock!)
5. Flash CyanogenMod ROM Download->(Zenfone 2 Z00A | Zenfone 2 Z008)
6. Optional: Install the Google Apps addon package (Download) choose x86 gapps

Known Issues

1. RIL is a sloppy mess. Data will likely not connect at first boot and will need manual setup after boot.
2. dialer shows an ugly screen on incoming calls
3. Miracast displays are broken
4. package manager sometimes installs x86 libs when it needs arm libs (causes some apps to not work at all)
5. selinux enforcing mode
6. sim 2 cannot be disabled
7. sim 2 audio quality issues when also on a call on sim 1 (unconfirmed)
8. sim 2 ends up disabled after airplane mode and potentially (unconfirmed) after extended periods without cell service.
9. USB UMS (Mass Storage) - Killed off for now, MTP works just fine

Source: XDA

Credit: jrior001, crpalmer 

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Android 6.0 Marshmallow plan for ASUS Smartphones

Android 6.0 "Marshmallow" is a version of the Android mobile operating system. First unveiled in May 2015 at Google I/O under the codename "Android 'M'", it was officially released in October 2015.

Marshmallow primarily focuses on improving the overall user experience of Lollipop, introducing a new permissions architecture, new APIs for contextual assistants (a feature notably leveraged by "Google Now On Tap"—a new capability of the Google Search app), a new power management system that reduces background activity when a device is not being physically handled, native support for fingerprint recognition and USB Type-C connectors, the ability to migrate data to a microSD card and use it as primary storage, as well as other internal changes.

Today on Zentalk, ASUS Official Forum announced ASUS Smartphones which get Android Marshmallow upgrade support.

Here the list:

Device Name	Device Code
Asus Zenfone 2 FHD	ZE551ML
Asus Zenfone 2 HD	ZE550ML
Asus Zenfone Selfie	ZD551KL
Asus Zenfone 2 Laser 5.5"	ZE550KL
Asus Zenfone 2 Laser 5" 3G	ZE500KG
Asus Zenfone 2 Laser 5" LTE	ZE500KL
Asus Zenfone 2 Laser 6"	ZE601KL
Asus Zenfone 2 Laser 6"	ZE600KL
Asus Zenfone 2 Deluxe/Special Edition	ZE551ML
Asus Padfone S	PF500KL

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