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Download ZenFone 2 (ZE551ML) official Firmware

Name: ZenFone 2 (ZE551ML)
Model: ZE551ML
Version: WW_2.19.40.22
Size: 1.1 GBytes
Downloads: 1446

Change Log:


Improvement Item:

1. Add kill switch (Anti-theft function for US regulation (US country code
2. Improve modem capability in India
3. Fixed the issue that cannot phone with Tailand True Provider SIM1.


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.

Notic: Please keep in mind that, you must flash - firmware at your own risk and also full responsible with you.


Please be informed that Asus-firmware.com only share the official firmware WITHOUT ANY modifications. All Roms here are for home or personal use only.