[ROM] CyanogenMod CM 12.1 for ASUS Zenfone 4 T00I/A400CG

Credit to X AnwarMov Jr. who bring this ROM to ASUS Zenfone 4 :)
Original Post: Here

Quickly, in this article, you are going to efficiently learn how to install cyanogenmod 12.1 Android on ASUS Zenfone 4. The entire process should work like a charm for you if you follow the procedure correctly. But DWYOR (Do it with your own Risk) I'm not responsible if you damaged your phone :)

Warning: When you install a custom ROM on your android device, it voids your warranty.


Bug: Tethering not Working

How to Install CyanogenMod 12.1 on ASUS Zenfone 4 :

1. Make sure your Zenfone 4 firmware is the latest 7.3.3
2. Unlock Bootloader, Unlock tool can be download here (Download) 
3. Extract Unlock bootloader tool > install apk> unlock
4. Download CyanogenMod 12.1 ROM Here (Download) 
5. Download ADB tools if you don't have it (Download) 
6. Download Intel usb driver if you don't have/install it (Download) 
7. Copy boot.img, system.img and recovery_TWRP.img place it to ADB folder
8. Turn off Zenfone 4
9. Enter Fastboot mode (Power + Volume up)
10. Connect Zenfone 4 to PC
11. At ADB Folder press shift+right click > open Command here
12. At command prompt type (press enter after each line and wait until finish) :
fastboot flash system system.img
fastboot flash boot boot.img
fastboot flash recovery recovery_TWRP.img
13. Factory Reset 
14. Done

Screenshots:

DWYOR

Credit to X AnwarMov Jr. who bring this ROM to ASUS Zenfone 4 :)
Original Post: Here OR Here

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How to Downgrade ASUS Zenfone 4 A400CG from Lollipop 5.0 to Kitkat 4.4

Today ASUS Zenfone Blog will show you How to Downgrade ASUS Zenfone 4 A400CG From Lollipop to KitKat.

Downgrade Step (From L to KK)

1. Download the downgrade tool: UL-ASUS_T00I-WW-9.9.9.0-user.zip
2. Using MTP connecting A400L with PC. (Enable MTP: Setting-->Storage-->press the USB icon on right corner--> Enable MTP)
3. Copy the tool (V9.9.9.0) to the A400CG internal storage.
4. Remove the USB cable, the device will pops up the system upgrade information.
5. After downgraded, device will auto reboot and perform factory reset.
6. After finished, please go to Settings->About-> software information->Build number. The version should be V6.6.3

ZENFONE 4 Downgrade Version
WW VERSION

Description

ASUS ZenFone 4(A400CG) downgrade SOP (Downgrade from L to KK), V9.9.9.0 Only for WW SKU* Notice: 1. Only apply to same SKU update, Example: WW->WW, CN->CN, TW->TW. 2. Software update cannot transfer the software SKU and downgrade the software version. 3. Downgrade image will only revert back to latest KK version 4. After OTA downgrade, device will perform factory reset automatically.then reboot automatically to complete upgrade process 5. System upgrade may cause part of data missing, please buckup your important data before system upgrade

File Size	825 MBytes                                                                              2015/05/29
Download from	Global

ZENFONE 4 Downgrade Version
CHT VERSION

Description

ASUS ZenFone 4(A400CG) downgrade SOP (Downgrade from L to KK), V9.9.9.0 Only for CHT SKU* Notice: 1. Only apply to same SKU update, Example: WW->WW, CN->CN, TW->TW. 2. Software update cannot transfer the software SKU and downgrade the software version. 3. Downgrade image will only revert back to latest KK version 4. After OTA downgrade, device will perform factory reset automatically.then reboot automatically to complete upgrade process 5. System upgrade may cause part of data missing, please buckup your important data before system upgrade

File Size	866 MBytes                                                                              2015/05/26
Download from	Global

TW available Soon

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[ROM] ASUS Zenfone 4 A400CG Android 5.0 Lollipop Download

ASUS Officially announced update Android 5.0 Lollipop For ASUS Zenfone 4 A400CG v7.3.3. You can check via Settings>About>System Update. Or You can do Manually by download this ROM Below. Please note: only update same SKU Version (TW->TW, WW->WW, CHT->CHT) or the upadate will be fail.

How to Update manually:

1. Download ROM below
2. Copy to Zenfone 4 Internal Memory
3. Wait For Notification and follow the procedure

ZENFONE 4 Lollipop  firmware: 
CHT VERSION
Version V7.3.3(WW)

Description

ASUS ZenFone4(T00I) software Image: V7.3.3 (Android L) for WW only* Note1: Please make sure update software version V6.6.3 first before update to software version V7.3.3 Note2: Download the OTA file and put the file to the device root directory directly. Please note! The listed apps below will be removed once the Android 5.0 Lollipop upgrade is complete. 1. battery Widget 2. Google Text-To-Speech 3. Movie Studio Please notice that below new apps will be added in this system upgrade. 1. TripAdvisor 2. Gameloft 3. CleanMaster 4. ASUS Auto-start Service Manager: Prevent unwanted apps from automatically starting up and using RAM Stop services immediately and prevent Android from restarting these apps again 5. ASUS Support Add Assistance in ASUS Help Support bug reporting mechanism  Enable Push notification service Add unread count badge Add new item reminders for articles Support Google Analytics mechanism Please notice that some feature changes in this system upgrade. 1. Lockscreen: remove standalone wallpaper & weather info 2. Dialer/Contacts: reduce tab count from 5 to 3; remove group tab name/photo 3. InCall screen: remove inCall animation & cover 4. Quick settings/Recent app layout change 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, TW- >TW. 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	797 MBytes                                                                              2015/05/29
Download from	Global

ZENFONE 4 Lollipop  firmware: 
CHT VERSION
Version V7.3.3(CHT)

Description

ASUS ZenFone4(T00I) software Image: V7.3.3 (Android L) for CHT only* Note1: Please make sure update software version V6.6.3 first before update to software version V7.3.3 Note2: Download the OTA file and put the file to the device root directory directly. Please note! The listed apps below will be removed once the Android 5.0 Lollipop upgrade is complete. 1. battery Widget 2. Google Text-To-Speech 3. Movie Studio Please notice that below new apps will be added in this system upgrade. 1. TripAdvisor 2. Gameloft 3. CleanMaster 4. ASUS Auto-start Service Manager: Prevent unwanted apps from automatically starting up and using RAM Stop services immediately and prevent Android from restarting these apps again 5. ASUS Support Add Assistance in ASUS Help Support bug reporting mechanism  Enable Push notification service Add unread count badge Add new item reminders for articles Support Google Analytics mechanism Please notice that some feature changes in this system upgrade. 1. Lockscreen: remove standalone wallpaper & weather info 2. Dialer/Contacts: reduce tab count from 5 to 3; remove group tab name/photo 3. InCall screen: remove inCall animation & cover 4. Quick settings/Recent app layout change 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, TW- >TW. 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	808.09 MBytes                                                                              2015/05/26
Download from	Global

TW available Soon

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[ROM] Zenfone 4 A400CG AOSP by X Anwar WJr

AOSP for Zenfone 4 Only
Credit to the Developer X Anwar WJr Original Post at Here
DWYOR

[SHARE][CUSTOM ROM][AOSP 4.4.4 ZENFONE 4 A400CG][SIGNED LOCK AND UNLOCK BOOTLOADER ]

Download Files :

1. philz recovery installer : http://www.mediafire.com/…/c7…/T00i_Phillz_recovery_sign.apk
2. link ROM : https://drive.google.com/folderview…
3. adbtools : http://www.mediafire.com/…/p8449…/Root_V2_Zenfone+4_T001.rar

Instructions :

1. Install Philz APK
2. Backup Data with TitaniumBackup (If you need to)
3. Extract ADB tools, ROM and Place all Files to ADB Folder
4. Go to Philz (Reboot Zenfone 4 and hold volume +/- then you will enter philz recovery)
5. At Philz Recovery choose Wipe and Format Options > Custom Format Options > Format Data
6. Choose Power Options > Reboot Bootloader
7. Connect your Zenfone 4 with PC/Laptop
8. At ADB Folder Press Shift + Right Click and choose Open Command Here
9. At Command Terminal Type This (Make Sure you place all files you need at ADB Folder) :
-> fastboot flash boot boot.img (enter)
-> fastboot flash system system.img (enter) (wait until finish )
-> fastboot continue (enter)

10. Done

Update:

1. Download Update https://drive.google.com/file/d/0B_qQULhmnkV1WGVUV0Y1bzJncnM/view?usp=sharing
2. Download update and place it to ADB folder, connect zenfone 4 with PC, enter fastboot and open cmd (at ADB Folder Press shift+right click > open command here) then type fastboot flash system system.img.gz then wait until complete
3. At Philz Recovery choose Wipe and Format Options > Custom Format Options > Format Data
4. Bug fix:  fix ram system management, rollback gapps 4.4.x, rollback app original aosp, include CWM based system, sound fix, gps, camera, etc  bugs : mp3 at external sd can't play, bluetooth force close

Known Bugs (without update) :

1. Contact no Scanning
2. Signal not Automatically Selected
3. Camera blured
4. Bluetooth Force Close
5. Some Gapps FC but you can update at Playstore 

Screenshoots :

AOSP for Zenfone 4 Only
Credit to the Developer X Anwar WJr Original Post at Here
DWYOR

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[Full Firmware] Zenfone 4 A400CG WW v6.5.35 and CHT v6.5.32

How to OTA update ? (Go to settings>About>System Update>Check for Update)
How to update Manual ? Here

ZENFONE 4  firmware: 
WW VERSION
Version V6.5.35(WW)

Description

ASUS ZenFone4(T00I) software Image: V6.5.35 (Android 4.4) for WW only* Improvement: 1. Improved the accuracy of battery percentage display 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, TW->TW. 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	809.09 MBytes                                                                              2014/11/27
Download from	Global

ZENFONE 4  firmware: 
CHT VERSION
Version V6.5.32(CHT)

Description

ASUS ZenFone4(T00I) software Image: V6.5.32 (Android 4.4) for WW SKU only* Improvement: 1. Improved stability of Audio Wizard feature 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, TW->TW. 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	803.57 MBytes                                                                                   2014/11/07
Download from	Global

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Asus Zenfone 4 Firmware WW/CHT 6.5.30

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

ZENFONE 4  firmware: 
WW VERSION
Version V6.5.30(WW)

Description

ASUS ZenFone4(T00I) software Image: V6.5.30 (Android 4.4) for WW SKU only* Improvement: 1. Improved stability of Recent App feature 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, TW->TW. 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	796.62 MBytes2014/10/20
Download from	Global

ZENFONE 4  firmware: 
CHT VERSION
Version V6.5.30(CHT)

Description

ASUS ZenFone4(T00I) software Image: V6.5.30 (Android 4.4) for CHT SKU only* Improvement: 1. Improved stability of Recent App feature 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, TW->TW. 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	859.06 MBytes2014/10/21
Download from	Global

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[Download] KitKat 4.4.2 Firmware/ROM Asus Zenfone 4 5 and 6

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

ZENFONE 5  firmware: 
WW VERSION
Version V2.19.40.6(WW)

Description

ASUS ZenFone 5(T00F/T00J) software Image: V2.19.40.6 for WW SKU only* Note: Please make sure update software version V1.18.40.10 first before update to software version V2.19.40.6 Improvement Item: 1. System update to Android 4.4 2. Improved Miracast compatibility 3. Added support for DLNA protocol 4. Fix Russian translation Key New functions: 1. Do Not Disturb mode 2. Call Guard(applies to models sold in China and Taiwan only) 3. Full dual standby with two SIM cards(applies to dual SIM models only) 4. Filter effects for videos 5. Reply via Call-in SIM card, system will auto select the right phone 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, TW->TW, CHT->CHT. 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 **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	707,49 MBytes update 2014/10/03
Download from	Global

TW VERSION
Version V2.19.40.6(TW)

Description

ASUS ZenFone 5(T00F/T00J) software Image: V2.19.40.6 for TW SKU only* Note: Please make sure update software version V1.18.40.10 first before update to software version V2.19.40.6 Improvement Item: 1. System update to Android 4.4 2. Improved Miracast compatibility 3. Added support for DLNA protocol 4. Fix Russian translation Key New functions: 1. Do Not Disturb mode 2. Call Guard(applies to models sold in China and Taiwan only) 3. Full dual standby with two SIM cards(applies to dual SIM models only) 4. Filter effects for videos 5. Reply via Call-in SIM card, system will auto select the right phone 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, TW->TW, CHT->CHT. 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 **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	741,02 MBytes update 2014/10/01
Download from	Global

CHT VERSION
Version V2.19.40.6(CHT)

Description

ASUS ZenFone 5(T00F/T00J) software Image: V2.19.40.6 for CHT SKU only* Improvement Item: 1. System update to Android 4.4 2. Improved Miracast compatibility 3. Added support for DLNA protocol 4. Fix Russian translation Key New functions: 1. Do Not Disturb mode 2. Call Guard(applies to models sold in China and Taiwan only) 3. Full dual standby with two SIM cards(applies to dual SIM models only) 4. Filter effects for videos 5. Reply via Call-in SIM card, system will auto select the right phone 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, TW->TW, CHT->CHT. 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 **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	741,02 MBytes update 2014/10/01
Download from	Global

WW Version 
FOTA files (Place to Internal Folder/via ADB Sideload) Manual OTA files (not full firmware) #Zenfone5 WW
1.18.40.9 to 1.18.40.10 : 20MB
http://fota.asus.com/delta_package/phone/WW_a500cg/formal/WW_user_1.18.40.9_20140827_0215-user-WW_a500cg-WW_user_1.18.40.10_20140903_9870-user-WW_a500cg-20140925_r/WW_500_0827_0903_20140925_r.zip

1.18.40.10 to 2.19.40.6 (Kitkat) : 442MB
http://fota.asus.com/delta_package/phone/WW_a500cg/formal/WW_user_1.18.40.10_20140903_9870-user-WW_a500cg-WW_user_2.19.40.6_20140927_8163-user-WW_a500cg-20140929/WW_500_0903_0927_20140929.zip

CN Version *soon

ZENFONE 4  firmware: 

 Version CHT_6.5.24(4.4)

Description

ASUS ZenFone4(T00I) software Image: V6.5.24 (Android 4.4) for CHT SKU only* Improvement Item:1.System upgrade to KitKat 4.4 2.Call Guard 3.Filter effects for videos 4.Reply via Call-in SIM card, system will auto select the right phone number via the call 5.Full dual standby with two SIM cards (applies to dual SIM models only) 6.Do Not Disturb modeSteps 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, TW->TW. 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	849,92 MBytes update 2014/10/01
Download from	Global

 VersionWW _6.5.27(4.4)

Description

ASUS ZenFone4(T00I) software Image: V6.5.27 (Android 4.4) for WW SKU only* Improvement Item:1.System upgrade to KitKat 4.4 2.Call Guard 3.Filter effects for videos 4.Reply via Call-in SIM card, system will auto select the right phone number via the call 5.Full dual standby with two SIM cards (applies to dual SIM models only) 6.Do Not Disturb modeSteps 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, TW->TW. 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	849,92 MBytes update 2014/10/03
Download from	Global

ZENFONE 6  firmware: 
WW VERSION
Version V2.19.40.15(WW)

Description

ASUS ZenFone 6(T00G) software Image: V2.19.40.15 for WW SKU only* Note: Please make sure update software version V1.18.40.10 first before update to software version V2.19.40.15 Improvement Item: 1. System update to Android 4.4 2. Improved Miracast compatibility 3. Added support for DLNA protocol 4. Fix Russian translation Key New functions: 1. Do Not Disturb mode 2. Call Guard(applies to models sold in China and Taiwan only) 3. Full dual standby with two SIM cards(applies to dual SIM models only) 4. Filter effects for videos 5. Reply via Call-in SIM card, system will auto select the right phone 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, TW->TW, CHT->CHT. 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 **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	711,87 MBytes update 2014/10/03
Download from	Global

TW VERSION
Version V2.19.40.13(TW)

Description

ASUS ZenFone 6(T00G) software Image: V2.19.40.13 for TW SKU only* Note: Please make sure update software version V1.18.40.10 first before update to software version V2.19.40.6 Improvement Item: 1. System update to Android 4.4 2. Improved Miracast compatibility 3. Added support for DLNA protocol 4. Fix Russian translation Key New functions: 1. Do Not Disturb mode 2. Call Guard(applies to models sold in China and Taiwan only) 3. Full dual standby with two SIM cards(applies to dual SIM models only) 4. Filter effects for videos 5. Reply via Call-in SIM card, system will auto select the right phone 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, TW->TW, CHT->CHT. 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 **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	741,02 MBytes update 2014/10/01
Download from	Global

WW Version
FOTA files (Place to Internal Folder/via ADB Sideload) Manual OTA files (not full firmware) #Zenfone6 WW
1.18.40.11 to 1.18.40.12 :
http://fota.asus.com/delta_package/phone/WW_a600cg/formal/WW_user_1.18.40.11_20140901_8156-user-WW_a600cg-WW_user_1.18.40.12_20140903_2744-user-WW_a600cg-20140925_r/WW_600_0901_0903_20140925_r.zip

1.18.40.12 to 2.19.40.15(kitkat):
http://fota.asus.com/delta_package/phone/WW_a600cg/formal/WW_user_1.18.40.12_20140903_2744-user-WW_a600cg-WW_user_2.19.40.15_20140927_4873-user-WW_a600cg-20140929/WW_600_0903_0927_20140929.zip

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