• Title: JIAYU G3
  • Listed: 04/29/2013 1:50 pm
  • ROM Version: ROM Android 4.1.2
  • You must be logged for ROM download.

Overall Rating : 123

79554 total views, 3 today

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Author adMember Info


ROM Mobile JIAYU 3G/3GN  – ROM Android 4.1.2


Update 04/30/2013

added new programs:
video wallpaper;
google voice;
video editor;
factory mode full worjing now, no more bootloop after use it!!!;
mods on settings:
now, JB, o 3 fast taps on "Android version" into android infos;
deleted voice "wireles update"
added button "screen-rotate" on notifications tab…..
better dualsim ringer:
addedsound boost (louds ring/notify volume…..)


flash 30.04.2013 rom, and after flash G3-to-G3N tranformer pack, reboot!!!


Update 04/10/2013

 - Rom G3 4.1.2 for CWM

- G3_TO_G3N Transformer pack for CWM

- Patch: WAKEUP volume +/- for CWM


Features ROM:

Note that there are two different examples of G3:
1) G3
2) G3N

1) has a chipset MT6620
2) has a chipset MT6628

how to recognize: all devices with build (in product info): 20130223-071508 G3N and later fitted with a chip MT6628, the oldier mount MT6620 chipset

the roms for the G3 are not compatible with the G3N and vice versa
flashate if a wrong rom (for example a rom on G3N G3) not work properly: WIFI, BT, FM radio and GPS, so if you do not work none of this hardware, you probably have the wrong rom, download the one for the other device and riflashate .
said what '…..

JB custom roms 4.1.2:

1) ROM for G3

2) transformer pack From G3 to G3N

settings added:
in developer options: factory mode and engineermode launcer;
in management sim, dualsim Ringer settings
fixato dualsim ringer and added some scripts to:
optimize and speed up your system: Zipalign, optimization and system ram, and supercharger
(If you do a restore after the installation you lose a part of the supercharger script …..)
more … in: -> tethering / portable hotspot: Ervius tether natter settings
updated boot logo, changing image!
applications that are put in settings are invisible in "programs"
optimized still the build.prop, and, of course the old changes:
reduction to 10 ms vibrio button operation
SMS long (No more self-transformation in mms sopo 3 concatenated SMS!)
extended PowerMenu (adding the "recovery" to reboot in recovery mode)
disbilitato the red LED to charge less than 15%
stretched to  5 seconds the flashing LED notifications (blue and green!)
dialer buttons marked.

ATTENTION ALL ROMS MAKE A FULL WIPE! (Before flashing make a full backup of your system and data)
you can 'perform two types of installations for the roms
a) clean istall: installed the rom from recovery modded!
b) istall with recovery: from clockwork mod, make a backup (only data and cache), installed the rom, you restore and reboot, you will have all vistri data and programs but on a brand new rom!
PS: If you come from a ICS 4.0.4, nn do a restore after you have installed the 4.1.2 JB, or the phone to reboot will go in boot-loop (nn will start and you will have to reflash the rom!)



Install ROM:

Only add to the procedure used  with Recovery LEWA:
1) Backup essential, always.
2) Factory reset
3) Wipe Dalvik cache and cache
4) Install zip (Rom)
5) Wipe cache and Dalvik cache
6) Reboot
So start the first time, quickly and completely clean.
With Titanium restore all your applications.

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

309 Responses to“JIAYU G3”

  1. 01/02/2013


    thanks. is it based on the latest official beta?

  2. 01/06/2013


    hi, ervius, i installed your last rom. i feel it's ok. thank you for it. but one question: where can i find the difference between g3 and g3n? where can i look for? thanx in advance.

    • 01/15/2013


      in rom sdescription I told how recognize, btw, if you install ROM for G£ and doesn't work WIFI, (you cannot activate it, if you press button to turn on it after few seconds, it return automatically to OFF!!!), and BT, GPS, FM RADIO, probally, you have to install instead the G3N ROM!! :) easy!!!

    • 01/06/2013


      ok, ervius, then i have the rigtht one. :-D thank you, for this nice rom once more.

    • 04/19/2013


      mobileuncle / device info / MTK Build / mediatek.wlan.chip = MT6628 G3N

      mobileuncle / device info / MTK Build / mediatek.wlan.chip = MT6620 G3

    • 06/22/2013


      hello pls anyone tell iam using micromax a44,which rom is working for micromax a44 pls tell me immediately

    • 10/31/2013


      hey can you tall me that how do you install TWRP

  3. 01/18/2013

    United Kingdom

    why jiayu not releasing official stable release for G3? They already released for G2S two months before. In all the G£ rom, bluetooth not syncing contacts with my car? In one of my backup it is working but I think I have applied the Bluetooth Fix Repair from market. Do anybody have any idea why bluetooth not syncing contacts or call history in car kits?


  4. 12/31/2012


    can you confirm me that the volume buttons wake up the phone? I need this as its quite uneasy to press the power button each time. tell me how to do it if you disable it as I want to try your ROM. thanx

  5. 03/12/2013


    With your previous rom sim 1 only gave 1 ring when called and then stopped. Is this solved?

  6. 03/20/2013

    United Kingdom

    Thank you very much for releasing Jelly Bean for the G3N. Did you port it from the Official G3 ROM or have Jiayu released a 4.1.2 ROM for the G3N? Also, do you know what the answer to the registration question on the ejiayu forums is? ' 输入下面问题的答案 我们的品牌是?(两个字)'
    Because I cen't register without it :p.

  7. 03/26/2013

    United Kingdom

    Which CWM should I have ? Now i have should I upgrade CWM recovery to 6.x.x.x ? Or it doesn't matter …

  8. 12/31/2012


    hey can anyone who has tested this ROM tell me if the volume keys wake up the phone on pressed or not

  9. 03/12/2013


    Does it still have the problem that it hangs up on an incoming call after first ring?

  10. 01/22/2013

    Czech Republic

    Hi ervius, why volume keys don't wake up the phone? Is it possible to enable this function? Thanks.

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