[GUIDE] [EASY] Dual Booting LOLLIPOP with KK/JB ROM's [GT-I9100][Noob Friendly]

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koolkunz

Senior Member
May 13, 2013
910
1,272
Welcome to the NOOB Friendly GUIDE to DUAL BOOT Lollipop with KitKat/JellyBean Roms on Samsung Galaxy S2!!

We have been fortunate enough to have 2 Working Lollipop Rom's (CM 12 and Omni 5.0) so I present to you the Guide on how to Dual Boot them with Kitkat/JB ROMs


Prerequisites :

1) Need Atleast 2.5 GB free on Internal Storage
2) Download the 1st Rom( LOLLIPOP - Primary Rom) and save it on any storage on your phone
3) Download Dorimanx Test Kernel v10.44.v004 from Here - http://dorimanx.casoncia.org/V10-MA...COMP-mv3-[10-30]-[29-09]-JB-SGII-PWR-CORE.zip
4) Download the 2nd Rom (Kitkat/JB - Secondary Rom) and save it on any storage on your phone


Steps :
1)Make sure you are on a Lollipop Compatible Recovery
2) Flash your Lollipop ROM (along with GAPPS etc.) you want as your Primary ROM
3) Reboot and check weather the ROM is working fine.
4) Reboot to Recovery
5) Flash Dorimanx v10.44.x004 Kernel you downloaded earlier
6) Go to Reboot Recovery
7) Go to dual boot options in new CWM and select Wipe 2nd ROM data/cache (takes 5-10 minutes)
8) Then select Wipe 2nd ROM dalvik-cache
9) After that Install 2nd ROM from Internal SD card or External SD card and flash the 2nd ROM (Kitkat/JB).
10) Reboot System and Boot to Secondary ROM (Press HOME button on DualBoot Screen)
NOTE : -Now you have both ROM's Installed but for now only 2nd ROM will boot. To see how to boot Lollipop ROM see next post

PLEASE HIT THE THANKS BUTTON :good:

Checkout my other thread for Kitkat/JB Roms Dualboot
Credits :

@nik60 for his thread
@eskriminal and @dorimanx for Kernel
@Troubadour666 for Helping Out/Patches
And any others i forgot to mention


 
Last edited:

koolkunz

Senior Member
May 13, 2013
910
1,272
Boot to Lollipop Rom :
1) Download and Copy the latest Apolo Kernel Lollipop Version to your phone internal storage
2) Reboot to recovery from your Kitkat/JB ROM
3) In CWM Recovery flash the Apolo Kernel
4)Reboot System and Enjoy your Lollipop ROM
Note : You will have to Repeat these steps everytime you want to change from Kitkat/JB ROM to Lollipop ROM

Boot to Kitkat/JB ROM :
1)Boot into Recovery
2)Flash the Dorimanx Kernel again and Reboot System to boot to Kitkat/JB ROM
Note : You will have to repeat these steps everytime you want to change from Lollipop to Kitkat/JB ROM
 
Last edited:

Troubadour666

Inactive Recognized Contributor
Aug 3, 2012
3,140
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43.7031 - 7.2661
video review about dualboot :)

sory, its not branch 10 i used from DorimanX builds, its branch 8, but for ppl, result will be same as describe in OP.

when i made this review, i never though someone will make a thread :)

link to download this personal omni rom with gapps inside used in video :

omni-5.0-20141202-i9100-HOMEMADE-GAPPS_inside.zip - 267.19 MB

thanks
 

Yakap

Senior Member
Nov 4, 2012
369
84
Omni 5.0 with gapps,it's working? Thanks

Sent from my GT-I9100 using XDA Premium 4 mobile app
 

Troubadour666

Inactive Recognized Contributor
Aug 3, 2012
3,140
7,035
43.7031 - 7.2661
tip for dualbooters :)

Hi,
try :) its a test , i assume you know what you do with your device, if you dualboot, you know that !

For this tweak, on your good 2nd rom , install Nandroid Manager from Store :

https://play.google.com/store/apps/details?id=com.h3r3t1c.bkrestore

tweak details:

if you have a good running lollipop on 1rst rom, then flash your DorimanX kernel with TWRP or ODIN, reboot DorimanX recovery and using it, make a nandroid of your 1rst lollipop rom.

- NOW, with DorimanX kernel, reboot and run your KitKat or JB 2nd rom and ,
- copy nandroid backup from clockworkmod folder on device (int or ext card) to PC ("omni-02122014-2014-12-02.19.02.55" for example) .
- from this nandroid, make an another safe copy in another folder of your PC.
- from folder named "test-omni-02122014-2014-12-02.19.02.55"
- with 7zip , open system.ext4.tar.a and delete all things except build.prop in /system/. close system.ext4.tar.a.
- with 7zip , open data.ext4.tar.a and
in data/data , delete :
com.andrew.apollo
com.bel.android.dspmanager
com.svox.pico
jp.co.omronsoft.openwnn
net.nurik.roman.dashclock
all folder with :
org.omnirom.*
com.android.*
com.cyanogenmod.*
delete contents in data/dalvik-cache/*
delete contents in data/users/*
you can try to clean some other folders if you want.
then close data.ext4.tar.a

- now, copy "test-omni-02122014-2014-12-02.19.02.55" from PC to your device, in same folder as original.
- reboot your 2nd rom again
- run nandroid manager and find your "test-omni-02122014-2014-12-02.19.02.55" in list of backups and tick it
- launch MD5 buton on screen and choose "generate MD5". When done, reboot recovery.

wait for new lollipop build.......
when , one day, one lollipop build appears (CM12 ALPHA, OMNI or CodeRom), then

- with DorimanX recovery, restore the modified nandroid backup "test-omni-02122014-2014-12-02.19.02.55" on your 1rst rom.
- then , go in mount and storage Menu, follow "mount /system" and go to "format system" partition.
- flash the NEW LOLLIPOP Build ROM now and enjoy to find your DATA APPs from precedent LOLLIPOP BUILD INSTALLED.

thanks
 

koolkunz

Senior Member
May 13, 2013
910
1,272
Guys if you want i can make Omni Recovery file for you guys...just someone send me the boot.img from latest build...im using bugaaty build
 

koolkunz

Senior Member
May 13, 2013
910
1,272
have also added files for Bugatty build...check the 2nd post of the thread :D
 

Yakap

Senior Member
Nov 4, 2012
369
84
Tried omni rom 5.0 internal storage not work, any help, tnx in adv.
 

koolkunz

Senior Member
May 13, 2013
910
1,272
The guide has been updated and is now working for all Lollipop roms...even CM12 now :D
Now the method is very simple...everything can be done on phone...no need to copy replace files in winrar etc
 
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  • 30
    Welcome to the NOOB Friendly GUIDE to DUAL BOOT Lollipop with KitKat/JellyBean Roms on Samsung Galaxy S2!!

    We have been fortunate enough to have 2 Working Lollipop Rom's (CM 12 and Omni 5.0) so I present to you the Guide on how to Dual Boot them with Kitkat/JB ROMs


    Prerequisites :

    1) Need Atleast 2.5 GB free on Internal Storage
    2) Download the 1st Rom( LOLLIPOP - Primary Rom) and save it on any storage on your phone
    3) Download Dorimanx Test Kernel v10.44.v004 from Here - http://dorimanx.casoncia.org/V10-MA...COMP-mv3-[10-30]-[29-09]-JB-SGII-PWR-CORE.zip
    4) Download the 2nd Rom (Kitkat/JB - Secondary Rom) and save it on any storage on your phone


    Steps :
    1)Make sure you are on a Lollipop Compatible Recovery
    2) Flash your Lollipop ROM (along with GAPPS etc.) you want as your Primary ROM
    3) Reboot and check weather the ROM is working fine.
    4) Reboot to Recovery
    5) Flash Dorimanx v10.44.x004 Kernel you downloaded earlier
    6) Go to Reboot Recovery
    7) Go to dual boot options in new CWM and select Wipe 2nd ROM data/cache (takes 5-10 minutes)
    8) Then select Wipe 2nd ROM dalvik-cache
    9) After that Install 2nd ROM from Internal SD card or External SD card and flash the 2nd ROM (Kitkat/JB).
    10) Reboot System and Boot to Secondary ROM (Press HOME button on DualBoot Screen)
    NOTE : -Now you have both ROM's Installed but for now only 2nd ROM will boot. To see how to boot Lollipop ROM see next post

    PLEASE HIT THE THANKS BUTTON :good:

    Checkout my other thread for Kitkat/JB Roms Dualboot
    Credits :

    @nik60 for his thread
    @eskriminal and @dorimanx for Kernel
    @Troubadour666 for Helping Out/Patches
    And any others i forgot to mention


    7
    video review about dualboot :)

    sory, its not branch 10 i used from DorimanX builds, its branch 8, but for ppl, result will be same as describe in OP.

    when i made this review, i never though someone will make a thread :)

    link to download this personal omni rom with gapps inside used in video :

    omni-5.0-20141202-i9100-HOMEMADE-GAPPS_inside.zip - 267.19 MB

    thanks
    6
    tip for dualbooters :)

    Hi,
    try :) its a test , i assume you know what you do with your device, if you dualboot, you know that !

    For this tweak, on your good 2nd rom , install Nandroid Manager from Store :

    https://play.google.com/store/apps/details?id=com.h3r3t1c.bkrestore

    tweak details:

    if you have a good running lollipop on 1rst rom, then flash your DorimanX kernel with TWRP or ODIN, reboot DorimanX recovery and using it, make a nandroid of your 1rst lollipop rom.

    - NOW, with DorimanX kernel, reboot and run your KitKat or JB 2nd rom and ,
    - copy nandroid backup from clockworkmod folder on device (int or ext card) to PC ("omni-02122014-2014-12-02.19.02.55" for example) .
    - from this nandroid, make an another safe copy in another folder of your PC.
    - from folder named "test-omni-02122014-2014-12-02.19.02.55"
    - with 7zip , open system.ext4.tar.a and delete all things except build.prop in /system/. close system.ext4.tar.a.
    - with 7zip , open data.ext4.tar.a and
    in data/data , delete :
    com.andrew.apollo
    com.bel.android.dspmanager
    com.svox.pico
    jp.co.omronsoft.openwnn
    net.nurik.roman.dashclock
    all folder with :
    org.omnirom.*
    com.android.*
    com.cyanogenmod.*
    delete contents in data/dalvik-cache/*
    delete contents in data/users/*
    you can try to clean some other folders if you want.
    then close data.ext4.tar.a

    - now, copy "test-omni-02122014-2014-12-02.19.02.55" from PC to your device, in same folder as original.
    - reboot your 2nd rom again
    - run nandroid manager and find your "test-omni-02122014-2014-12-02.19.02.55" in list of backups and tick it
    - launch MD5 buton on screen and choose "generate MD5". When done, reboot recovery.

    wait for new lollipop build.......
    when , one day, one lollipop build appears (CM12 ALPHA, OMNI or CodeRom), then

    - with DorimanX recovery, restore the modified nandroid backup "test-omni-02122014-2014-12-02.19.02.55" on your 1rst rom.
    - then , go in mount and storage Menu, follow "mount /system" and go to "format system" partition.
    - flash the NEW LOLLIPOP Build ROM now and enjoy to find your DATA APPs from precedent LOLLIPOP BUILD INSTALLED.

    thanks
    4
    Boot to Lollipop Rom :
    1) Download and Copy the latest Apolo Kernel Lollipop Version to your phone internal storage
    2) Reboot to recovery from your Kitkat/JB ROM
    3) In CWM Recovery flash the Apolo Kernel
    4)Reboot System and Enjoy your Lollipop ROM
    Note : You will have to Repeat these steps everytime you want to change from Kitkat/JB ROM to Lollipop ROM

    Boot to Kitkat/JB ROM :
    1)Boot into Recovery
    2)Flash the Dorimanx Kernel again and Reboot System to boot to Kitkat/JB ROM
    Note : You will have to repeat these steps everytime you want to change from Lollipop to Kitkat/JB ROM
    2
    Little tuto

    Hi all :)

    tell me what you think about this ;)


    thanks