[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)
DescriptionASUS 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 Size707,49 MBytes update 2014/10/03
Download fromGlobal

TW VERSION
Version V2.19.40.6(TW)
DescriptionASUS 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 Size741,02 MBytes update 2014/10/01
Download fromGlobal

CHT VERSION
Version V2.19.40.6(CHT)
DescriptionASUS 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 Size741,02 MBytes update 2014/10/01
Download fromGlobal
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)
DescriptionASUS 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 Size849,92 MBytes update 2014/10/01
Download fromGlobal
 VersionWW _6.5.27(4.4)
DescriptionASUS 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 Size849,92 MBytes update 2014/10/03
Download fromGlobal



ZENFONE 6  firmware: 
WW VERSION
Version V2.19.40.15(WW)
DescriptionASUS 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 Size711,87 MBytes update 2014/10/03
Download fromGlobal
TW VERSION
Version V2.19.40.13(TW)
DescriptionASUS 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 Size741,02 MBytes update 2014/10/01
Download fromGlobal
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