If your Updater App on your Xiaomi isn’t working or you don’t trust it (maybe because your smartphone got shipped with Adware installed or isn’t behaving like it should), you can update it with fastboot.
You can download the Fastboot-ROM here. If you are on Windows, you can use the Mi Flash Tool.
On Linux with already installed Android platform-tools it’s way easier
First make sure to Backup all your Data, because it will be erased, and download the Fastboot ROM for your device.
#Download Fastboot-ROM (this one is for Redmi 3S) wget http://bigota.d.miui.com/V8.0.3.0.MALMIDG/land_global_images_V8.0.3.0.MALMIDG_20160805.0000.29_6.0_global_588e5c60af.tgz #Extract it tar xzvf land_global_images*.tgz
Now you need to connect your phone to your PC and boot it in Fastboot Mode (shut it down and press Power and Volume Down key simultaneously ).
Check if your bootloader is unlocked
fastboot oem device-info
It should output:
... (bootloader) Device tampered: false (bootloader) Device unlocked: true (bootloader) Device critical unlocked: false (bootloader) Charger screen enabled: true (bootloader) Display panel:
If “Device unlocked: true”, you are ready to go. Flash the ROM with the sh-Script from the extracted archiv
cd *gloobal ./flash_all.sh
uriesk 