Update the Galaxy Grand Duos to Lollipop with CyanogenMod 12

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The Galaxy Grand duos was a hit in the midrange segment when it first launched. Since then it has been eclipsed by it’s better spec’d predecessor, the Grand 2 (read more about custom ROMs on the Grand 2 in here). Yet this veteran of the Galaxy series, abandoned by Samsung, is still supported by the devs of CyanogenMod. So join us after the break as we take a closer look at how you can update the Galaxy Grand Duos to the latest version of Lollipop.


Pre Requisites

  • You phone must be rooted.
  • You must have the latest CWM installed.
  • Your phone must have over 80% charge


  • The FM radio app doesn’t work.
  • Waking the device from the lock screen may cause random stutters in background music playback.
  • Random force closes on Camera App.
  • Unable to un-pin screen (guest-mode) without rebooting.
  • Some users have reported issues with call audio.
  • Some users reported random low video recording volume.
  • Launcher shortcut of apps moved to SD might disappear.
  • Does not work on 4.1 stock ROM’s bootloader, please upgrade to stock 4.2 before flashing

Additionally, Dual SIM has the following limitations:

  • Both SIMs are always enabled (no way to disable one SIM)
  • “Receive incoming call while data is enabled” is always enabled


With that out of the way, let’s get started on the installation process

Step 1

Make a backup!

Step 2

If you were on CM 10.1 or a stock ROM prior to 4.2, upgrade to stock 4.2 first.

Step 3

Install ClockworkMod recovery with SELinux support (.tar) (.zip). Older CWM will result in a “status 7″ error.

Step 4

Reboot into recovery

Step 5

Wipe data if coming from stock or another non-CM ROM (You may get a “staus 7″ error if you fail to wipe.)

Step 6

Install the ROM

Step 7

Optionally install the Google Apps Addon.

Step 8

To enable root go into developer settings and enable root acess.

To upgrade to a newer build, simply flash the zip. There’s no need for data wipe or flashing Google Apps again. (However, during this ALPHA stage, if you are experiencing strange issues, you may want to try a wipe.)

Possible Fixes

Audio Bug : The real cause of this is unknown, but this is often found with people using the I9082DDUBNB1 baseband/modem. Some people have reported that flashing a different baseband (e.g. I9082XXUBMK3) has resolved the problem. A collection of basebands can be found at here Or you can also try I9082LUBUBMK1 that I use.

Dual SIM : Dual SIM support is enabled by default. If you only use 1 SIM and wants to disable Dual SIM support, you can use the following instruction:


setprop persist.radio.multisim.config dsds




setprop persist.radio.multisim.config none

OTA : This is an official CM release so you can download the latest OTA’s from the about phone> Update section. Please remember though, CM 12 is not a stable release and as such nightlies may break functionalities. Remember to take a backup before you flash any OTA’s.

Launcher Issue : Use an alternate launcher like Nova.


Screenshot_2014-11-16-17-05-37 Screenshot_2014-11-16-17-05-41 Screenshot_2014-11-16-17-05-48 (1) Screenshot_2014-11-16-17-05-48 Screenshot_2014-11-16-17-06-06 Screenshot_2014-11-16-17-06-51 Screenshot_2014-11-16-17-06-56 Screenshot_2014-11-16-17-07-17 Screenshot_2014-11-16-17-05-29

If you have any comments or queries, sound off below, and we’d be happy to answer them for you.

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