Lenovo S850 Installing Android Lollipop 5.0 Custom ROM

02 Apr 2015

Lenovo S850 Installing Android Lollipop 5.0 Custom ROM  – This is an Android Lollipop for Lenovo S850 but this is custom ROM develop by russian developer from 4pda.ru, so if you wanna taste or feel the experience using Android 5.0 Lollipop then you must try to install this custom ROM to your device.
This is a custom ROM so there many bug on it, and it also have some requirements to be fulfilled, this guide will show you how to install a Android 5.0 Lollipop custom ROM on your Lenovo S850. This guide using flash tool method to install Android 5.0 Lollipop, so it will erase all your previous ROM and data so please make backup preparations before starting following this guide.

Disclaimer :
This guide for educational purpose only, We not responsible if your device bricked after following this tutorial. Even this guide is already tested but it has possibility to brick your phone, Until now i still cannot fix Lenovo S850 that have signal lost problem so do with your own risk (DWYOR)

Lenovo S850 Installing Android Lollipop 5.0 Custom ROM

Screen Shots :

Lenovo S850 Installing Android Lollipop 5.0 Custom ROM
Lenovo S850 Installing Android Lollipop 5.0 Custom ROM

Lenovo S850 Installing Android Lollipop 5.0 Custom ROM
Lenovo S850 Installing Android Lollipop 5.0 Custom ROM

Bugs :

  • Auto focus not working, but camera is 100% work with 13 Mp
  • The ROM is very buggy, so please very consider it before decide to follow the guide and change your ROM.
  • Network unstable, but can get 3G for SIM 1
  • Battery consumption
Downloads :
  • this ROM already out to date and the link is vanish, so i replace it with the link from 4pdu.ru lollipop ROM base on CM 12, you can install this ROM using TWRP or another custom recovery, ignore the rest guide CYANOGENMOD 12.1 Mark VII FINAL R36 (Open using chrome)
Lenovo S850 Installing Android Lollipop 5.0 Custom ROM 
  1. First thing to do is install USB Vcom driver on your computer, without this driver installed on your computer flash tool will not recognize your device and progress bar will stay at 0%, for installing USB Vcom driver please refer to this below :

    • turn off your device and remove the battery, If you device using non removable make sure that your device is completely turn off wait like 20 seconds after power off the device
    • open device manager on your computer
    • connect your device using USB cable
    • there will be MTK65xx Preloader Devices show on your device manager, PORT section for 5 second or less and then disappear
    • disconnect and connect your device again, right click on MTK65xx Preloader Devices before it disappear, select Update Driver Software 
    • point it USB VCOM extracted folder, and install the driver from there.
    • disconnect and connect your device again, there will be Mediatek PreLoader USB VCOM Port on your device manager PORT section.
  2. Extract the ROM download files, there will be contains 2 folder ROM folder and flash tool folder, now just go to flash tool folder and run flash_tool.exe
  3. On the flash tool, check DA DL All with Checksum option this is must checked option so please don’t forget it. Click Scatter-Loading button browse to target_bin folder and select MT6582_Android_scatter.txt file, when you select it will automatically load the rest files to flash tool.
    Lenovo S850 Installing Android Lollipop 5.0 Custom ROM
  4. When everything is set just press Download button or press F9, flash tool will begin to prepare the files that will be used for flashing process, wait until finish.
  5. Now turn off your device, because Lenovo S850 use non removable battery you must make sure that it completely turn off. Connect your device to your computer, flash tool will recognize the device and starting flashing process, the process will take 5-6 minutes to finish and when you can see GREEN CIRCLE on the middle of flash tool that mean flashing process already finish successfully
    Lenovo S850 Installing Android Lollipop 5.0 Custom ROM
  6. Done, you have successful install Android 5.0 Lollipop to your Lenovo S850. Disconnect your device and try to do normal booting, first booting will take longer than usually approx 5 minutes or less so be patient.
Congratulations, Please remember that this ROM is on develop stage so if you consider that this ROM cannot use for daily just change the ROM again, and plese don’t complain about bugs to me because i just share what i found on the net. You can see the source about this ROM on this forum 4pda.ru, if you have problems or found any broken link regarding this guide please leave comments and Thank you for visit
  1. Sir when i flash this rom using sp flash tool then its show me error that
    Sp flash tool error :8038
    PMT is ready and layout has been changed
    Hint:please use firmware upgrade instead of download to avoid important data lostlost

    Please tell me how to fix this…. Please me your ans. Quickly…..

    1. this guide actually is for developer and not for daily uses, i just wanna share that developer already develop Android Lollipop 5.0 for Lenovo S850, so if you feel this ROM cannot use for daily just back to 4.4.2 or 4.2.2

  2. Hello Andy .. please help me . i downlaod and install it like all the instruction .. and all do fine n succes .. but im stuck at the android logo animation .. i tried reinstall it back .. but semmes nt working .please help me

    1. Hi,
      No there is no other way, you just need the update. Lenovo issue when change ROM or modified ROM is signal strength because lack of source resources so just need to wait the update. Until when, i dont know will update when new ROM is release

  3. Sir Andy, about the S850 network issue, fail to discover network and SN:00000000. Is there any solution so far? ( I've been following ur blog till now. The solution is to hand it over to the service centre. My device out of warranty. Just playing luck here.) TQ.

  4. Hi I have lenovo S850 ROW version. Can u help me how create a recovery? I am currently using your method on creating your own cwm. Is it safe to use this method? I have been waiting to for hours, i think its stuck on "system ext4.img". Hope u can help thanks

  5. As you said this ROM has many bugs, but since then surely it got many updates.
    I checked the 4pda.ru, but I don't speak russian so I absolutely don't understand this forum.

    Can you tell me where can I download the latest version of the lenovo 850's android 5.0?

    Bytheway: this will be my first ROOTing and manul android update.

  6. SUCCESS!!! Finally i got Lollipop 5.1.1 on my Lenovo S850!!!
    After 1 Weeks Searching for all information!!! i want to share tips , to ALL Lenovo S850 User (Non-Removable Battery) .

    Before u Start! u must Provide :
    3.USB Cable
    7.Cigarrette (if you r Smoker)
    8.and Specially PRAY!

    ————————Do With Your Own Risk———————

    Step 1 : your Lenovo S850 must be Rooted (i use iRoot http://www.iroot.com/iroot-for-pc)

    Step 2 : Install TWRP (Go To http://www.androidrookies.com/2015/04/lenovo-s850-install-twrp-v2840-for.html#.VxNfsOJ97Dc)

    Step 3 : Download ROM and Neccesary .Zip (Go To http://adf.ly/1ZLpIN)
    -CYANOGENMOD 12.1 Mark VII FINAL V3.1 (от mom36) для ROW
    After Finish Connect ur Lenovo S850 to USB , Move ALL Downloaded File to (ex:ComputerS850Internal storage(Here) ) not in folder.

    Step 4 : Power off your HH. (wait 1~2 Min) . and then do Hard Reset!
    Press [Power + Vol up] and Choose eMMc or (Go To https://www.youtube.com/watch?v=Nca37Bw5ENw) your HH will Restart Automatically After Complete.

    Step 5 : Power Off ur HH. Wait 1~2 Min. Then Go To TWRP Recovery by Press [Vol up + Vol Down + Power] and go to Wipe , then Swipe to Wipe . u have to wait about 3~5 Min. after success . go to install . choose from .Zip . then add ALL .Zip Downloaded .
    – CM_12.1_ROW_MARK_VII_Final_V3.1.Zip
    – open_gapps-arm-5.1-pico-20151225.Zip
    – BETA-SuperSU-v2.48.zip
    – Youtube.Zip

    and Swipe to Confirm Flash!!!

    Step 6 : DONE!!! YOUR HH WILL REBOOT AND CONGRATULATION UR Lenovo S850 has a Cyanogenmod 12.1!!!

    Thanks to Andy Suwito and Many People for Make Tutorial Lenovo S850!!!

    1. this ROM already out to date and the link is vanish, so i replace it with the link from 4pdu.ru lollipop ROM base on CM 12, you can install this ROM using "TWRP or another custom recovery", ignore the rest guide CYANOGENMOD 12.1 Mark VII FINAL R36 (Open using chrome)

  7. Hey I have rooted my phone 3 months ago… I want to install custom ROM… I have installed twrp recovery using ur guide.many users saying that lolipop ROM is buggy… so what should I do?? I can't use KitKat anymore because it is so boring… help me do or not??

  8. If I wipe data and system in twrp before flashing ROM then my stock rom backup in my device also deleted??
    My device have not otg support and not memory card support. hence I couldn't store it in. It store in internal store but if I cleaned it then how can I recover stock rom?

    1. Do you know that in the recovery mode your device still can be recognize as removeble disk by computer. Put custom rom file at cpu after wipe connect to cpu as removeable disk then move custom rom to your device

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