[MOD] MultiROM v33x [20/05/2016]

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Olivier

Recognized Developer / Retired Forum Moderator
Nov 6, 2011
2,658
6,888
vUYXIiz.png

MultiROM is a one-of-a-kind multi-boot mod. It can boot any Android ROM as well as other systems like Ubuntu Touch, once they are ported to that device. Besides booting from device's internal memory, MultiROM can boot from USB drive connected to the device via OTG cable. The main part of MultiROM is a boot manager, which appears every time your device starts and lets you choose ROM to boot. You can see how it looks on the left image below and in gallery. ROMs are installed and managed via modified TWRP recovery. You can use standard ZIP files to install secondary Android ROMs and MultiROM even has its own installer system, which can be used to ship other Linux-based systems.

Features:
* Multiboot any number of Android ROMs
* Restore nandroid backup as secondary ROM
* Boot from USB drive attached via OTG cable

You can also watch a video which shows it in action.


WARNING
It is dangerous. This whole thing is basically one giant hack - none of these systems are made with multibooting in mind. It is no longer messing with data partition or boot sector, but it is possible that something goes wrong and you will have to flash factory images again. Make backups. Always.​



IMPORTANT
  1. I'm not responsible for anything, you do all this on your own risk.
  2. Once you have flashed and set up MultiROM, don't flash another boot.img using fastboot or normally. Always go to TheMultiROM Menu (3 bars in the top right corner) to flash ROMs/kernels or other mods.
  3. If you want to uninstall MultiROM, just flash the MultiROM uninstaller.
  4. I am not certainly sure about the compatibility with stock Roms, I still need to test this yet.
  5. Your device must not be encrypted.
  6. When booting another ROM, you'll notice that in some cases, you can enter the recovery of the boot.img of the ROM. Please don't use it, flash everything using MultiROM TWRP.



INSTALLATION
  1. Make sure you are on a Rom compatible with one of these kernels and flash it or use the non-kexec workaround. (See important Notices)
  2. Reboot into MultiROM TWRP and flash the MultiROM installer
  3. That's it. You can now go to TheMultiROM Menu (3 bars in the top right corner) to start flashing other ROMs.



Adding ROMs
Go to recovery, select TheMultiROM Menu (3 bars in the top right corner) -> Add ROM. Select the ROM's zip file and confirm.​



Using USB drive
During installation, recovery lets you select install location. Plug in the USB drive, wait a while and press "refresh" so that it shows partitions on the USB drive. You just select the location (extX, NTFS and FAT32 partitions are supported) and proceed with the installation.
If you wanna use other than default FAT32 partition, just format it in PC. If you don't know how/don't know where to find out how, you probably should not try installing MultiROM.
If you are installing to NTFS or FAT32 partition, recovery asks you to set image size for all the partitions - this cannot be easilly changed afterward, so choose carefully. FAT32 is limited to maximum of 4095MB per image - it is limitation of the filesystem, I can do nothing about that.
Installation to USB drives takes a bit longer, because the flash drive is (usually) slower and it needs to create the images, so installation of Ubuntu to 4Gb image on my pretty fast USB drive takes about 20 minutes.
Enumerating USB drive can take a while in MultiROM menu, so when you press the "USB" button in MultiROM, wait a while (max. 30-45s) until it searches the USB drive. It does it by itself, no need to press something, just wait.​



Updating/changing ROMs

1. Primary ROM (Internal)
  • Flash ROM's ZIP file as usual, do factory reset if needed (it won't erase secondary ROMs)
  • Go to TheMultiROM Menu (3 bars in the top right corner) in recovery and do Inject curr. boot sector.
2. Secondary Android ROMs
If you want to change the ROM, delete it and add new one. To update ROM, follow these steps:
  • Go to TheMultiROM Menu (3 bars in the top right corner) -> List ROMs and select the ROM you want to update.
  • Select "Flash ZIP" and flash ROM's ZIP file.



SOURCEs
MultiROM - https://github.com/XperiaMultiROM/multirom/ (branch master)
Modified TWRP - https://github.com/multirom-htc/Team-Win-Recovery-Project (branch android-6.0)
Kernel w/ kexec-hardboot patch - https://github.com/olivieer/android_kernel_sony_msm8994 (branch 32.1.A.0.xxx)


FAQs can be found here.

CREDITs
  • Tasssadar
  • Myself5
  • nkk71
  • Garcia98


XDA:DevDB Information
MultiROM for Sony Xperia Z4/Z3+, Tool/Utility for the Sony Xperia Z4

Contributors
Olivier

Version Information
Status: Beta

Created 2016-05-20
Last Updated 2016-05-20
 

MotexT

Senior Member
Aug 25, 2014
196
422
Paris
Ok, so can't root it - Systemless method with patching doesn't work anymore. Also can't flash any zip to main ROM - neither by main menu (flashing, but where - no idea), nor by ROM list (main ROM is hidden and cannot make it visible via settings, resets every time to hidden status).
 

Olivier

Recognized Developer / Retired Forum Moderator
Nov 6, 2011
2,658
6,888
Ok, so can't root it - Systemless method with patching doesn't work anymore. Also can't flash any zip to main ROM - neither by main menu (flashing, but where - no idea), nor by ROM list (main ROM is hidden and cannot make it visible via settings, resets every time to hidden status).

You need to use my kernel; it can be found in the second post.

EDIT: I can reproduce your problem and will check it once I get home (~ 1-2 days).
 
Last edited:

MotexT

Senior Member
Aug 25, 2014
196
422
Paris
You need to use my kernel; it can be found in the second post.

EDIT: I can reproduce your problem and will check it once I get home (~ 1-2 days).

Actually I'm using your kernel. Systemless Root in recovery says like it's already patched and terminal returns "abort operation". Looks like you already patched it by Systemless SU, so I can't repatch it again. If you did so, revert this change. By other side, MultiROM along with TWRP works good, except zip flashing from main TWRP menu - it flashes, everything seems to be good, but actually changes did not appear to be applied on main ROM, even when I inject everything, like described in guide (tried both Systemless SU and DRM fix - neither works :/). Also there is bug with main ROM - can't uncheck "Hide internal ROM", so main ROM couldn't be shown in ROM list. If any ideas - I'm up for testing.
 
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Olivier

Recognized Developer / Retired Forum Moderator
Nov 6, 2011
2,658
6,888
Actually I'm using your kernel. Systemless Root in recovery says like it's already patched and terminal returns "abort operation". Looks like you already patched it by Systemless SU, so I can't repatch it again. If you did so, revert this change.
Alright - systemless root doesn't work because my kernel uses a combined ramdisk, meaning the actual ramdisk of the ROM is in /sbin/ramdisk.cpio. SuperSU doesn't know that, tries to treat the main ramdisk as a normal one and fails (hence the abort). I'll try to find a solution...
 
Last edited:
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MotexT

Senior Member
Aug 25, 2014
196
422
Paris
Alright - systemless root doesn't work because my kernel uses a combined ramdisk, meaning the actual ramdisk of the ROM is in /sbin/ramdisk.cpio. SuperSU doesn't know that, tries to treat the main ramdisk as a normal one and fails (hence the abort). I'll try to find a solution...

We need either edit Systemless SU zip to patch proper boot image or make regular SU zip working (aka system mode) - for now, with .185 kernel it gives bootloops due to SELinux changes
 

Olivier

Recognized Developer / Retired Forum Moderator
Nov 6, 2011
2,658
6,888
We need either edit Systemless SU zip to patch proper boot image or make regular SU zip working (aka system mode) - for now, with .185 kernel it gives bootloops due to SELinux changes
Fixed, please re-downloaded the boot image (from the same link), I have updated it. You can now also use the MultiROM Manager to install MultiROM. It can download TWRP, MultiROM and my kernel.
 

MotexT

Senior Member
Aug 25, 2014
196
422
Paris
So, tested it for a while. Bugs: second ROM doesn't booting properly - just rebooting to black screen, then red LED blinks 3 times and reboots to that state again and then just after second reboot boots to multirom ROM menu.
 

Olivier

Recognized Developer / Retired Forum Moderator
Nov 6, 2011
2,658
6,888
So, tested it for a while. Bugs: second ROM doesn't booting properly - just rebooting to black screen, then red LED blinks 3 times and reboots to that state again and then just after second reboot boots to multirom ROM menu.

@MotexT, yes, for me same behavior. Even stock kernel sometimes reboot device on bootanimation.

Try now; use the MultiROM Manager to upgrade.
 
I've just ordered a 16GB microSD to test this :)
You said you haven't tested it with stock ROM well that's precisely what I plan on doing... I'm running CM13 and after a couple of days of research there doesn't seem to be any solution in sight for the camera bugs. However after seeing your thread, I figured if all goes well I could be running CM13 daily and just reboot to the stock ROM when I need to shoot a video (necessary for my professional activity... I'd rather do this than always have my old phone with me).
I'll keep you updated once I get the microSD.

Edit: looks like your server is offline, I can't download your APK... I'll try to download it again tomorrow.
 
Last edited:

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    vUYXIiz.png

    MultiROM is a one-of-a-kind multi-boot mod. It can boot any Android ROM as well as other systems like Ubuntu Touch, once they are ported to that device. Besides booting from device's internal memory, MultiROM can boot from USB drive connected to the device via OTG cable. The main part of MultiROM is a boot manager, which appears every time your device starts and lets you choose ROM to boot. You can see how it looks on the left image below and in gallery. ROMs are installed and managed via modified TWRP recovery. You can use standard ZIP files to install secondary Android ROMs and MultiROM even has its own installer system, which can be used to ship other Linux-based systems.

    Features:
    * Multiboot any number of Android ROMs
    * Restore nandroid backup as secondary ROM
    * Boot from USB drive attached via OTG cable

    You can also watch a video which shows it in action.


    WARNING
    It is dangerous. This whole thing is basically one giant hack - none of these systems are made with multibooting in mind. It is no longer messing with data partition or boot sector, but it is possible that something goes wrong and you will have to flash factory images again. Make backups. Always.​



    IMPORTANT
    1. I'm not responsible for anything, you do all this on your own risk.
    2. Once you have flashed and set up MultiROM, don't flash another boot.img using fastboot or normally. Always go to TheMultiROM Menu (3 bars in the top right corner) to flash ROMs/kernels or other mods.
    3. If you want to uninstall MultiROM, just flash the MultiROM uninstaller.
    4. I am not certainly sure about the compatibility with stock Roms, I still need to test this yet.
    5. Your device must not be encrypted.
    6. When booting another ROM, you'll notice that in some cases, you can enter the recovery of the boot.img of the ROM. Please don't use it, flash everything using MultiROM TWRP.



    INSTALLATION
    1. Make sure you are on a Rom compatible with one of these kernels and flash it or use the non-kexec workaround. (See important Notices)
    2. Reboot into MultiROM TWRP and flash the MultiROM installer
    3. That's it. You can now go to TheMultiROM Menu (3 bars in the top right corner) to start flashing other ROMs.



    Adding ROMs
    Go to recovery, select TheMultiROM Menu (3 bars in the top right corner) -> Add ROM. Select the ROM's zip file and confirm.​



    Using USB drive
    During installation, recovery lets you select install location. Plug in the USB drive, wait a while and press "refresh" so that it shows partitions on the USB drive. You just select the location (extX, NTFS and FAT32 partitions are supported) and proceed with the installation.
    If you wanna use other than default FAT32 partition, just format it in PC. If you don't know how/don't know where to find out how, you probably should not try installing MultiROM.
    If you are installing to NTFS or FAT32 partition, recovery asks you to set image size for all the partitions - this cannot be easilly changed afterward, so choose carefully. FAT32 is limited to maximum of 4095MB per image - it is limitation of the filesystem, I can do nothing about that.
    Installation to USB drives takes a bit longer, because the flash drive is (usually) slower and it needs to create the images, so installation of Ubuntu to 4Gb image on my pretty fast USB drive takes about 20 minutes.
    Enumerating USB drive can take a while in MultiROM menu, so when you press the "USB" button in MultiROM, wait a while (max. 30-45s) until it searches the USB drive. It does it by itself, no need to press something, just wait.​



    Updating/changing ROMs

    1. Primary ROM (Internal)
    • Flash ROM's ZIP file as usual, do factory reset if needed (it won't erase secondary ROMs)
    • Go to TheMultiROM Menu (3 bars in the top right corner) in recovery and do Inject curr. boot sector.
    2. Secondary Android ROMs
    If you want to change the ROM, delete it and add new one. To update ROM, follow these steps:
    • Go to TheMultiROM Menu (3 bars in the top right corner) -> List ROMs and select the ROM you want to update.
    • Select "Flash ZIP" and flash ROM's ZIP file.



    SOURCEs
    MultiROM - https://github.com/XperiaMultiROM/multirom/ (branch master)
    Modified TWRP - https://github.com/multirom-htc/Team-Win-Recovery-Project (branch android-6.0)
    Kernel w/ kexec-hardboot patch - https://github.com/olivieer/android_kernel_sony_msm8994 (branch 32.1.A.0.xxx)


    FAQs can be found here.

    CREDITs
    • Tasssadar
    • Myself5
    • nkk71
    • Garcia98


    XDA:DevDB Information
    MultiROM for Sony Xperia Z4/Z3+, Tool/Utility for the Sony Xperia Z4

    Contributors
    Olivier

    Version Information
    Status: Beta

    Created 2016-05-20
    Last Updated 2016-05-20
    1
    Reserved

    DOWNLOADs

    MultiROM

    Kernel with kexec-hardboot:
    - For use with the 32.1.A.1.185 only
    - Works on both variants (Single SIM + Dual SIM)
    - MultiROM TWRP is already built-in
    1
    You need to use my kernel; it can be found in the second post.

    EDIT: I can reproduce your problem and will check it once I get home (~ 1-2 days).

    Actually I'm using your kernel. Systemless Root in recovery says like it's already patched and terminal returns "abort operation". Looks like you already patched it by Systemless SU, so I can't repatch it again. If you did so, revert this change. By other side, MultiROM along with TWRP works good, except zip flashing from main TWRP menu - it flashes, everything seems to be good, but actually changes did not appear to be applied on main ROM, even when I inject everything, like described in guide (tried both Systemless SU and DRM fix - neither works :/). Also there is bug with main ROM - can't uncheck "Hide internal ROM", so main ROM couldn't be shown in ROM list. If any ideas - I'm up for testing.
    1
    Actually I'm using your kernel. Systemless Root in recovery says like it's already patched and terminal returns "abort operation". Looks like you already patched it by Systemless SU, so I can't repatch it again. If you did so, revert this change.
    Alright - systemless root doesn't work because my kernel uses a combined ramdisk, meaning the actual ramdisk of the ROM is in /sbin/ramdisk.cpio. SuperSU doesn't know that, tries to treat the main ramdisk as a normal one and fails (hence the abort). I'll try to find a solution...
    1
    but the z3+/z4 dont have any rom and dont have any romer ╮(︶︿︶)╭
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