• Listed: 06/14/2015 7:55 pm
  • ROM Version:v3.10 Android 4.4.2
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Overall Rating : 31

11583 total views, 2 today

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I have tried almost all type of roms with no luck.This one seems to work.Official ROM by UMI.06/01/2015 v3.10

No reboots,good battery life,solid warming,no issues yet .

You can use Rootjoy as your official ROM flashing solution.Always make a full backup,before you start the flashing process.!

Only for Offical ROM update /Don't use this if you have custom ROM installed /

1.Download Rootjoy

2.Plug your Phone and allow connection

3.Create a full backup of your phone

4.Flash your mobile device 

***Warning ***

Your device data wil be deleted permanently.Do it at your own risk !

***If you have custom ROM you can get an error that your mobile doesn't supported anymore***

If you are not familiar with flashing process please find previous ROM's posts, where you can find more detailed description about the "how to ",and also you can find answers in the comments for the upcoming issues.

Enjoy !

Useful tweaks for : 


1.download mobile uncle tool

front speaker fine tuning:


rear speaker audio tuning:

open mobile uncle tool –>engineering mode (MTK)—>Hardware testing/audio—>loudspeaker mode–>>type:media–>set level 0=120 (level1=130,level2=140..etc ) increase the number on different levels as you wish, till max level 14 =230 

don't use 255 value max level ,you might damage your speaker .

now adjust your media volume levels from low to max..reset your values if you feel it to harsh 


Zero produced for Chinese market,so you should personalize your gps settings to your country.

what you need is:

1.turn your wifi on

2.download the following tools from playstore :

mobile uncle tool,mt gps ,faster gps ,total commander (or root explorer )

3.open mobile uncle tool 

find power gps search on main screen

select GPS SET

reboot your machine 

4.open faster gps 

select your continent,select your country 

go to advanced settings select intermediate_pos type the value :1

select accuracy_thres value:500

enable wiper value=1

at the ntp server you should find your country's ntp sever /in my case hu.pool.ntp.org/ 

you can check here whether it was set properly http://www.pool.ntp.org/en/

supl_no_secure_port value=3425





reboot your machine

5.open total commander

select file system root

/system/etc you should find your gps.conf file

select and select edit file 

you should find the following settings more or less,check everything there :

NTP_SERVER=eu.pool.ntp.org /<–this is an extra row if you travel alot in europe added by me  in totalcmd/




6.open mt gps

download epo

7.go to open air,and turn data connection to ON

8.open mobile uncle tool

engineer mode–>engineer mode mtk–>location–>YGPS–>information–>hot–>wait 3 sec–>full–>wait 3 sec–>AGPS restart —>go to satellites tab–>now wait till red spots turn to green first fix could take more than 5 minutes 

9.if fixed ,start your gps app 


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※Please make a backup of your device before installing or updating ROM

39 Responses to“UMI ZERO OFFICIAL”

  1. fr4ita

    Posts: 2

    Good stuff man, this build works and look good for me, reboot problem is solved.

  2. 12/21/2014
    Posts: 4

    rom is ok but audio is a problem…..it's too low….do you have a solution??

  3. 12/15/2013
    Posts: 13

    Hi,I did not realize but try this one ..

    1.download mobile uncle tool from playstore

    2.here you can fine tuning the settings 



  4. 12/15/2013
    Posts: 13

    You can also try speaker boost from playstore if the first fix doesn't work..let us know the results

  5. fr4ita

    Posts: 2

    For fix audio problem, use this app: "AudioFX".



    Also you can go in Settings >Audio profiles >Under "Sound Enhancement"set on "BesLoudness –Volume booster for speaker", enjoy.

  6. 06/15/2015
    Posts: 1

    Hi…it is possible to flash this rom with TWRP? if yes…i can renome the rom in ota-update-zip?and which Wipe i can do…only cache e dalvik or cache dalvik and data'? please help me thanks

  7. 12/15/2013
    Posts: 13


    Try the flashing method what I have mentioned above.If not possible to flash with Rootjoy,you might get an error."your device doesn't supported anymore"and won't falsh it in a wrong way or your device need to be rooted(there is another fix for that).Rootjoy will do the job,wipes cahche dalvik cache and data.Be sure your all data backed up previously!

     if you failed somehow,please let me know it,and don't panic I have used all ROMs and all recovery and I could take back my phone to work again.


  8. 12/15/2013
    Posts: 13

    one more thing ,copy the ROM and http://www.needrom.com/download/umi-zero-2/ CWM recovery to your sd card before you do anything


  9. 06/17/2013
    Posts: 3

    I previously updated the phone without any external devivce in the process. I dont have windows so cannot use rootjoy. Can this update be done purely from the phone? Seems odd to use external devices to update a phone when there is a way to flash from the SD card. Seems there are no Linux options to update the phone? Anyone in a similar position?


  10. 04/17/2015
    Posts: 8


    just wanted to say that it went smoothly, but it lacks some high end smartphone's features, but overal great phone its even better than most high end smartphones. 


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