Download Assistant AS-4421 Unami Stock Firmware Flash File

Download Assistant AS-4421 Unami official stock firmware from the link here, and follow the provided flashing instructions to learn how to flash the stock rom.

If you notice that any of the links provided below is broken or doesn’t work, please post in comments section so we fix and update it ASAP.

 

 

Download Options

File Name: ASSISTANT_AS_4421_sn691703_20170412__V01_MP3.zip
Size: 689 MB
Firmware – Download

 

File Name: FM_4421_AS_sn691607_V04.7z
Size: 553 MB
Firmware – Download

 

File Name: FM_4421_AS_sn691703_V01.zip
Size: 684 MB
Firmware – Download

 

 

How to flash

After downloading the Flashtool firmware, follow the instructions here to flash.

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