The official firmware version (dated 2017/06/09 ) for the ASUS ZenFone 2 (ZE550ML) is an Android 6.0 Marshmallow update. While ASUS has officially discontinued system updates for this model, you can still find raw firmware files through community repositories and archive sites. Firmware Details Model: ASUS ZenFone 2 ZE550ML (Z008). Version: WW-4.21.40.311. Release Date: June 9, 2017.
Flashing a .raw file is typically done when the device is "bricked" or cannot enter standard recovery: Download ZE550ML 311 20170609 raw
Often distributed as a .raw file for use with service tools or a .zip for recovery flashing. Where to Download The official firmware version (dated 2017/06/09 ) for
Provides firmware databases and guides for downloading official stock ROMs used for system restoration. Version: WW-4
You generally need the ASUS Flash Tool (v1.0.0.24 or similar) to handle .raw formats.
The official firmware version (dated 2017/06/09 ) for the ASUS ZenFone 2 (ZE550ML) is an Android 6.0 Marshmallow update. While ASUS has officially discontinued system updates for this model, you can still find raw firmware files through community repositories and archive sites. Firmware Details Model: ASUS ZenFone 2 ZE550ML (Z008). Version: WW-4.21.40.311. Release Date: June 9, 2017.
Flashing a .raw file is typically done when the device is "bricked" or cannot enter standard recovery:
Often distributed as a .raw file for use with service tools or a .zip for recovery flashing. Where to Download
Provides firmware databases and guides for downloading official stock ROMs used for system restoration.
You generally need the ASUS Flash Tool (v1.0.0.24 or similar) to handle .raw formats.