Lenovo A850 Flashing MIUI V5 4.3.1 Android 4.2 Custom ROM

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June 2, 2014 9:15 am

Lenovo A850 Flashing MIUI V5 4.3.1 Android 4.2 Custom ROM – After last week i am posting on How to Rooting Lenovo A850 and Install Custom Recovery now it time to more modified your Lenovo A850 using MIUI V5 3.12 custom ROM. MIUI actually an official ROM for device named XIOMI this ROM don’t have application drawer button, all applications short cut show like widgets in many screens same like Iphone view but users allow to modified it icons, colors, lock screen, and even boot animation. MIUI V5 4.3.1 for Lenovo A850 no longer support by official MIUI so any update will be provide by unofficial update but it will fix bugs too.

Disclaimer :
This guide for educational purpose only, We not responsible if your device bricked after following this tutorial.  (DWYOR)

Requirements :

  • CWM / TWRP must be installed first
  • Do Nandroid Backup
  • Battery minimum 70%, we don’t wanna sudden shutdown interrupt flashing process.
Download :

Lenovo A850 Flashing MIUI V5 4.3.1 Android 4.2 Custom ROM

  1. Download MIUI V5 4.3.1 and move it to your sd card
  2. Turn off your device
  3. Turn on your device while Power + Volume Up + Volume Down buttons, this combination buttons will make your device boot to recovery mode.
  4. On recovery mode select Wipe data / Factory Reset ↦ Yes – Delete all user data confirm all and begin to do factory reset.
  5. Back to recovery main menu select Wipe cache partition ↦ Yes – Wipe cache confirm all warning and begin to clean cache partition.
  6. Now go to Mount and Storage ↦ Format /System this will format your /system partition and remove all operating system from your device. When you perform this step it means no turning back if you reboot your device after perform this step you device will bootloop cause there is no operating system inside.
  7. Back to recovery mode main menu, select Install zip from sd card ↦ Choose zip from sd card, navigate to MIUI V5 4.3.1 confirm all warning and begin the installation process.
  8. When installation process finish, back to recovery mode main menu select Wipe data / Factory Reset ↦ Yes – Delete all user data this will avoid boot loop.
  9. Now select Reboot System Now, first time booting will take more longer it will take about 2-3 minutes so please keep patience.
  10. Done, for installation MiuiAndroid Gapps 4.2.2 Small Signed , repeat step 2 and step 7 but on step 7 navigate to MiuiAndroid Gapps 4.2.2 Small Signed file.
    Lenovo A850 Flashing MIUI V5 4.3.1 Android 4.2 Custom ROM
Congratulations !!! now you become more advanced on modified your device. When you try to modified your Lenovo A850 system please don’t forget to make full backup. Thank you for reading this guide don’t hesitate to leave comments when you have problem regarding this tutorial.
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crazymunky
5 years ago

Will this root my phone and enable me to transfer internal app to external sd card?

androidrookies
5 years ago
Reply to  crazymunky

hi,
miui include root just need to active it on system setting-> security. this is a ROM not a applications on something, if you install it it will erase all your DATA and ROM.
for transfer internal app to external sd card, i think android 4.2 already enabled it default

Ernest
5 years ago
Reply to  crazymunky

Yup. Anyone can confr on moving apps to SD? And also can it set External storage as default?

สำเนียง จำปาแดง

imie error ?

androidrookies
5 years ago

Hi,
Follow this guide for repair your imei http://bit.ly/1nKiGOH

A Concorned User
4 years ago

HOW CAN I GO BACK TO MY ORIGINAL FIRMWARE AFTER FLASHING THIS ROM?

androidrookies
4 years ago

You cannot if you not backup your current rom using mtk droid tool or flash tool read back. But you can use another international ROM from my blog if you want.

Unknown
5 years ago

my lenovo got problem with the keyboard. my keyboard doesn't appear….

androidrookies
5 years ago
Reply to  Unknown

Hi,
Just install keyboard from google play store, but i never see keyboard problem on miui. Just try re install the miui

MFACE
5 years ago

hello
why i cant install rom on cwm mode
its say installed aborted

androidrookies
5 years ago
Reply to  MFACE

Hi,
You must use custom recovery to install this rom, cwm or twrp

Joseph L
5 years ago

i use the TWRP to install MiuiAndroid Gapps 4.2.2 Small Signed but when i booted into the phone, i am not able to find the playstore ?

androidrookies
5 years ago
Reply to  Joseph L

thank you for your correction, this is an old guide and i think it need to be update.
i will update it right now, just try to re download the gapps, i am already update the download link

Zul Scofield
5 years ago
Reply to  Joseph L

Hi Andy,
Can you confirm if this rom allow moving apps to SD? And also can it set External storage as default?

becase the only rom that support set external storage is using Linerty s121 lenovo rom. This phone has problem with very less internal storage. Need to set external storage as the default write..

Is this possible in MiUi ?

thanks,

androidrookies
5 years ago
Reply to  Joseph L

hi zul,
no there is no option to allow and set external storage as defaulr write disk, but you can the function move to external sd card on apps system settings, or maybe you wanna use link2sd you can follow this guide http://bit.ly/1kUMlVy

Zul Scofield
5 years ago
Reply to  Joseph L

thanks andy!
i will try and let you know.

Zul Scofield
5 years ago

i use the TWRP to install "MiuiAndroid Gapps 4.2.2 Small Signed" but when i booted into the phone, i am not able to find any Gapps…no playstore…no google services….
i have try it multiple times….flashing the firmware again….but same…
please help

androidrookies
5 years ago
Reply to  Zul Scofield

Hi,
There are same user that like you, install but not able to find gapps. I will try to find out why but for now i cannot help you yet. And for gps it the common problem for mtk devices you must hack the gps configuration. I think you can try find it on google how to fix gps on mtk devices

Joseph L
5 years ago

Apparently i also faced the problem as you, but I manage to solve this issue. Once your A850 is already changed to MIUI 4.3.1 custom rom, install mobileUncle Tools. Give it a root access. I find that CWM 6.0.3.4 / TWRP 2.5.0.0 recovery wasn't able to flash the MiuiAndroid Gapps 4.2.2 Small Signed properly. You need to use this recovery instead. https://www.dropbox.com/s/fanj71r8khbjtvn/recovery_new.img Use uncleMobile tool to update the recovery to this version. Boot it to recovery. Install the gapps as per instruction above. Reboot and this time you will notice the android system will be updated with the gapps. btw… Read more »

androidrookies
5 years ago
Reply to  Joseph L

Hi,
Thank you by the way for your information i hope other users that face the problem with installing gapps can see this information. A great thank you

wismoyo setiawan
5 years ago

This miui support with latest lenovo baseband?

androidrookies
5 years ago

Hi,
This is an old guide, and i never try to change the baseband. So i cannot say support or not but before change the baseband please backup the original baseband first

jack sparrow tan
5 years ago

my phone stop at first time reboot why

androidrookies
5 years ago

Explain more please, are you already done installation and reboot for the first time or still not do installation? First boot will take longer around 4-5 minute to finish so be patient

Mirul Ikmal
5 years ago

Okay so your link's rom doesn't work. So I use miui official pages to install the rom. Is it okay? And only the lenovo logo appear. I think I might have a boot loop. I already factory reset like what you say but still can't. Help

androidrookies
5 years ago
Reply to  Mirul Ikmal

hi,
thank for your information and sorry for the inconvenience, i am already correct the download link you can try it. try re flash again with download link already fix and first boot will take 4-5 minute to finish so please be patient

Mirul Ikmal
5 years ago
Reply to  Mirul Ikmal

Oh an I was using Team WIn Recovery Project v2..5.0.0

androidrookies
5 years ago
Reply to  Mirul Ikmal

Do bavckup first with twrp so if something happen you can easly restore it. And i think it not problem

Viraj Kansara
5 years ago
Reply to  Mirul Ikmal

I have a bootloop in Lenovo A850 now. When I tried to install the MiUi ROM from CWRM 6 it say operation aborted. I have formated my /system partition and did not backup my old stock ROM.

androidrookies
5 years ago
Reply to  Mirul Ikmal

Hiviraj,
Following this guide to restore to Lenovo A850 Rom htp:://bit.ly/1z95Pic

Viraj Kansara
5 years ago

Bro but I want to install MiUi ROM and get out of this boot loop.

androidrookies
5 years ago
Reply to  Viraj Kansara

yes i know bro, first we must fix the bootloop, when it get fix do backup your whole system using MTK droid or custom recovery, then follow this guide http://bit.ly/1oB7qYH to install custom and root. After that you can install MIUI ROM.

Viraj Kansara
5 years ago
Reply to  Viraj Kansara

But I will go back to stock ROM and again I will have to do everything same. Where did I make a mistake? How will I be able to install MIUI?

androidrookies
5 years ago
Reply to  Viraj Kansara

yes, you already format your system, so you must bring it back first before you can continued to install miui. but if you force not wanna back to your old then just format all data, system, cache then install miui, then do factory reset format data and cache only then try to normal boot.

Amirul Asyraf Mohd Suhaimi

Is there any video tutorial?

androidrookies
5 years ago

Hi,
Sorry for now there is no video tutorial

Viraj Kansara
5 years ago

I am unable to download GApps.

androidrookies
5 years ago
Reply to  Viraj Kansara

Hi
Already try the link for gapps, i am able to download it. The link redirectwith adfly maybe your provider blobk it. Please try again.

Vinit Puril
3 years ago
Reply to  Viraj Kansara

i want miui5 firmware link to download

androidrookies
3 years ago
Reply to  Viraj Kansara

It reove by MAUI it self, try search on the download link. Maybe you can find that suitable with your device