How to install CM 12.1 (Android 5.1) on the Xiaomi Redmi 1s, there is no doubt that it is a low-class successful smartphone but with powerful hardware specifications. Xiaomi recently launched the Redmi 2 and Redmi 2A which took the place of the Redmi 1s. Xiaomi has sold millions of units of the Redmi 1S.

CaynogenMod is one of the most popular custom ROM manufacturers and they offer the most customizable, stable and durable ROMs for Android smartphones and tablets. Recently, CaynogenMod released Android Lollipop for Redmi a custom ROM for the 1s based on CM12. Now CyanogenMod has released the CM12.1 which is based on Android 5.1 Lollipop.

While this is not an official release from CyanogenMod, the ROM is nearly bug-free and is certainly capable of serving as a daily operating system. Here are some pre-requisites before moving on to the installation.

To install Android 5.1 on Lollipop on Redmi 1S just follow this article, I mentioned a simple guide to install Lollipop on Xiaomi Redmi 1s based on CM12.1. Just download CM12.1 5.1 Lollipop ROM for Xiaomi Redmi 1s, install it and enjoy the new Android 5.1 Lollipop.

Just follow the simple steps to install CM12.1 on your Xiaomi Redmi 1s based on Android 5.1 Lollipop. just download the unofficial CM12.1 ROM and install it on your phone.

The following tips are important as they will help you complete the installation procedure and make it go smoothly without any problems.

So, before going to the installation process of the CM 12.1 (Android 5.1), let’s take a look at how to backup all data. When installing this custom ROM based on Lollipop 5.1, your data will be deleted and your phone will be as good as new.

Install the drivers: Make sure you have installed the USB drivers for the Xiaomi Redmi 1s correctly. If not, you can download the latest official drivers from our Android USB driver section here: DOWNLOAD ANDROID USB DRIVER FOR SAMSUNG, HTC, NEXUS, LG, SONY & OTHERS

Back up your apps:

  • Download AirDroid from the Google Play Store.
  • A Windows / Mac / Linux computer on the same WiFi network as the phone.
  • An Android phone or tablet, of course!

Open AirDroid on your phone and launch the application.

Enter the IP address (and port) in the URL field in the browser and enter the password that was given to you by the application on the phone.

Now you can backup your contacts, files and pictures. To make the Backup just click on the Apps icon and a window will open showing all the applications on the phone.

Select all applications or only the important ones you want to backup.

After selecting them, click on the download button at the top right of the window.

After pressing Download, AirDroid will download all selected applications to your computer in .ZIP format. If only one app has been selected, the downloaded file will be in apk format.

Back up your Gmail and Google contacts just >> Synchronize with Google Sync.

How to backup WhatsApp messages, open the app >> open the menu and go to settings >> go to chat settings >> at the bottom click back up conversations.

How to enable USB debugging mode go to device settings menu >> go to submenu in some devices the submenu will be called Other / General >> now scroll to “Build Number” and tap 7 times. After tapping 7 times you will see a notice saying “You are now a developer” / “Developer mode has been activated”. Now go to the Settings menu and you will see the developer options submenu >> tap developer options and then enable USB debugging.

Make sure your Android device has the battery charges up to 80-85%.

The device must have the latest CWM or TWRP version installed, if you do not find the guide on this blog, go to Google.

It is recommended to clean the dalvik cache before starting to install this custom rom.

Attention: this tutorial is for it only Xiaomi Redmi 1s. Do not try this guide on any other Android device. Furthermore, we are not responsible for any damage caused by the instructions provided on this page. Try this guide at your own risk. However, it is very unlikely that the device will be damaged if you follow all the instructions that have been mentioned in the procedure.

How to install CM 12.1 (Android 5.1) on the Xiaomi Redmi 1s

Download Unofficial CyanogenMod 12.1 and the Google Apps for Xiaomi Redmi 1s on the computer.

Connect it Xiaomi Redmi 1s to your computer using the USB cable.

Copy or paste the downloaded files to theyour phone’s memory / SD card. Make sure the files are located in the root folder of your phone’s memory / SD.

Turn off the phone and disconnect from the USB cable.

Now enter the custom recovery mode. Turn on the phone by holding Volume Up + Power Button together.

Once you are in custom recovery, select a full data wipe by selecting “wipe data / factory reset”. Use the power button to select everything while you are in recovery mode.

Then, perform a cache wipe, “Wipe cache partition”.

This is optional, but wiping the Dalvik cache is recommended. So the phone will not be able to get stuck in bootloop. From recovery, go to ‘advanced’ and select “wipe Dalvik cache”.

Then go back to the main recovery screen and select “install zip from SD card”.

Select “choose zip from sdcard”. Using the volume keys, navigate to the zip file you copied earlier to the SD card and select it with the power button. Confirm the installation on the next screen and the procedure should start right away.

Google Apps: Repeat the same operation for the Google Apps and install them on your phone.

Once the installation is complete, go to “+++++ Back +++++” and restart your phone by selecting ”reboot system now“ from the recovery menu.

Your Xiaomi Redmi 1s it will reboot and may take about 5 minutes to reboot. So, you have to wait.

That’s all! Your Xiaomi Redmi 1s it should now have installed Android 5.1 with CM 12.1 (Android 5.1) on your mobile! Go to Settings> About phone to check.

If you run into any problems, feel free to drop us a comment below and we’ll get back to you with the fix or solution to your problem.


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