I want to update my Redmi 3S Prime with miui 8.1.1 stable ROM to miui 8.2.5 (643 MB ;STABLE), I just downloaded the ROM via updater app in the mobile and when it completes the app shows that please retry to download the file. Since the the release of ROM in May 2017, i downloaded the required ROM about 10-12 times.Now help me solve this issue.
Install Xiaomi PC suit from this link: pcsuite.mi.com/
Go to fastboot mode (Turn Off phone turn on using power and volume down button) and connect device to computer and turn on PC suit Here is process to install rom from PC suit en.miui.com/thread-95630-1-1.html
Select a Global option and click on the flash device.It will install China Stable Rom.
After that download Global Stable Rom from the following link http://en.miui.com/download-303.html Flash it from updater app
Note: Please take the backup before doing any steps. It will wipe out your staorage