Xiaomi Mi 1Official Stock Firmware

Xiaomi Mi 1/1S Platform

OS Android OS, v4.0 (Ice Cream Sandwich)
Chipset Qualcomm MSM8260 Snapdragon S3
CPU Dual-core 1.7 GHz Scorpion
GPU Adreno 220
Xiaomi Mi 1Official Stock Firmware  

Xiaomi Mi 1Official Flash File

Xiaomi Mi 1Official Stock Rom 
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