[MOD][FEB 01] MultiROM v30x

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Peter____

Peter____

Member
Jul 24, 2017
16
2
Multirom

Hello,

If you are on stock rom, give this Kernel a chance:
[5.0-5.1][Kernel Z1C][.368 source][V 4.0] RockZ1L Kernel [04/10/2015] by venkat kamesh

https://xdaforums.com/sony-xperia-z1-compact/development/5-0-rockz1l-kernel-t3101784

On cm12 roms I have no experience, only tied cm13 roms up to now.
For the general development of the multirom for the z1c I got no feedback from the developers, so it will be hard to find working solutions for the z1c and multirom. The most Devs on this device have abandoned the device.

So far,

Peter

€D. said:
Hi Peter :)

Thank you for the link to version v33.
Now all the Error messages are gone!
However, it still doesn't work with latest stock based ROMs (.236 - I tested DStriker SP008 and kernel does not get injected (no multirom stratup screen nor posibility of booting into secondary)) with kexec enabled advanced v19 kernel.
Nevertheless it is possible, somehow, to dualboot latest cm12 (August security patch without kexec kernel as primary) and my desired legendary CarbonRom 4.4 as secondary. Somehow the no-kexec-workaround is working :laugh:

Problem definitely not solved, but I am happy with the workaround ;)

Recovery in use: TWRP 3.0.2 Real recovery
Click to expand...
Click to collapse
 
Peter____

Peter____

Member
Jul 24, 2017
16
2
Dual boot Z1C

Hello,

by the while I'm recommending the dual boot patcher Apk for multi boot the Z1C.
It is working with roms up to Nougat and I havn't found any errors so far and it's runnung stable from stock LL.

Peter
 
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  • 32
    Garcia98
    Garcia98
    vh3puLb.png
    Introduction

    MultiROM is one-of-a-kind multi-boot mod for Xperia Z1 Compact. 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.​



    Installation
    1. Via MultiROM Manager app
    This is the easiest way to install everything MultiROM needs. Install the app and select MultiROM and recovery on the Install/Update card. If the Status card says Kernel: doesn't have kexec-hardboot patch! in red letters, you have to install also patched kernel - either select one on the Install/Update card or get some 3rd-party kernel here on XDA. You are chosing kernel for your primary ROM, not any of your (future) secondary ROMs, so select the version accordingly.
    Press "Install" on the Install/Update card to start the installation.
    ​

    2. Manual installation
    Firstly, there are videos on youtube. If you want, just search for "MultiROM installation" on youtube and watch those.

    Note 1: Your device must not be encrypted (hint: if you don't know what it is, then it is not encrypted).

    MultiROM has 3 parts you need to install:
    • MultiROM (multirom-vXX-DDMMYY-amami.zip) - download the ZIP file from second post and flash it in recovery.
    • Modified recovery (TWRP_multirom-amami.img) - download the IMG file from second post and use fastboot to flash it.
    • Patched kernel - You can use either the stock one in second post or third-party kernels which include the patch, you can see list in the second post. Download the IMG file and flash it via fastboot.
    You current rom will not be erased by the installation.
    Download links are in the second post.    ​



    Adding ROMs
    1. Android
    Go to recovery, select Advanced -> MultiROM -> Add ROM. Select the ROM's zip file and confirm. As for the space, clean installation of a ROM after first boot (with dalvik cache generated and connected to google account) takes more or less 700MB of space.​



    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 (if USB drive partitions are not showed, disconnect USB drive and try again). 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 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.
    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 Advanced -> MultiROM 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 Advanced -> MultiROM -> List ROMs and select the ROM you want to update.
    • Select "Flash ZIP" and flash ROM's ZIP file.



    Source code

    XDA:DevDB Information
    MultiROM for Xperia Z1 Compact, Tool/Utility for the Sony Xperia Z1 Compact

    Contributors
    Garcia98

    Version Information
    Status: No Longer Updated

    Created 2015-01-17
    Last Updated 2016-06-10
    View
    14
    Garcia98
    Garcia98
    Downloads

    1. Main downloads

    MultiROM: MultiROM-v30x-170115-UNOFFICIAL-amami.zip
    Modified recovery (based on TWRP): TWRP_multirom-amami_20150201-00.img
    MultiROM Manager Android app: Google Play or link to APK

    Kernel w/ kexec-hardboot patch (Stock 4.4.4 - .157): stock-kexec-boot.img
    Kernel w/ kexec-hardboot patch (Stock Lollipop): http://xdaforums.com/showpost.php?p=61802911&postcount=119
    Kernel w/ kexec-hardboot patch (CyanogenMod 12): kernel.zip
    You need to have kernel with kexec-hardboot patch only in your primary ROM!​

    2. third-party kernels with kexec-hardboot patch
    * Validus LP kernel
    * Resurrection Remix LP kernel

    Nicely ask your kernel developer to merge kexec-hardboot patch.​

    3. Uninstaller

    MultiROM uninstaller: MultiROM_uninstaller.zip
    Flash this ZIP file to remove MultiROM from your device. It will erase all secondary ROMs. If you don't want MultiROM menus in recovery, re-flash clean TWRP, but it is not needed - those menus don't do anything if MultiROM is not installed.
    ​

    Changelog
    Code: 
    MultiROM v30x
=====================
* Initial release


    Recoveries:
    Code: 
    01/02/2015
==========
* Disabled screen timeout.
* Added filesystems tools.
* Latest TWRP updates and changes.

21/01/2015
==========
* Fixed the installation of block images OTAs through MultiROM.
* Latest TWRP updates and changes.

17/01/2015
=====================
* Initial amami release
    View
    12
    OmarEinea
    OmarEinea
    I don't know if there's one already but I couldn't find it and as I upgraded to stock LP,
    I wanted MultiROM to test other ROMs on and still enjoy stock as primary so I made a stock kernel with kexec patch,
    and here I am sharing if anyone is interested:

    Download link for boot.img: https://www.androidfilehost.com/?w=files&flid=35194

    As you can see in the Sources, no changes added except for the kexec patch
    the other thing that's different from stock is that I compiled it with Linaro GCC 4.9.3-2015.03 Toolchains
    the ramdisk is almost stock as well {if anyone can provide pure stock ramdisk, that'd be great ;)} and it doesn't contain a recovery.

    I tested it (and still using it) on DstrikerZ1 Kai ROM 5.6 but it should work on all LP ROMs as well.

    I hope that's useful for someone,
    Regards,
    Omar.
    View
    9
    Garcia98
    Garcia98
    FAQ and other notes
    About security
    In order to make multi-booting possible, MultiROM has to sacrifice some security measures. Firstly, on secondary Android ROMs, /system is not mounted read-only. While there are other things preventing malicious software from messing with /system, this might potentialy make it easier for such software to attack that system.
    Next, MultiROM doesn't work with /data encryption. Not many people who use custom ROMs also use encryption anyway, so that isn't much of a concern.​

    What do the ROMs share?
    All ROMs are separate, except /sdcard, which is shared between all Android ROMs.​

    How many ROMs can I have?/Where are the ROMs stored?
    You can have as many ROMs as you can fit in your /sdcard. All the ROMs are stored in /sdcard/multirom/roms or on an USB drive./external SD card. This folder is unaccessible in Android, to prevent mediascanner from scanning it. You can either in recovery, or obtain root and go to /data/media/0/multirom/roms.
    ​

    Can I have different versions of Android working alongside
    Yes.​

    MultiROM recovery says it's 2.8.4. Why isn't it updated to 2.8.4.*highernumber*?
    It is, it just shows wrong version.​

    The menu with all the ROMs won't show up during boot, how to fix it?
    Either re-flash the MultiROM zip or go to recovery, Advanced -> MultiROM -> Inject curr. boot sector.

    The reason for this is that something rewrote your boot.img, which happens for example when you flash a kernel. MultiROM's boot menu is part of the boot image, so it has to be added into it again.
    ​
    View
    8
    Garcia98
    Garcia98
    New recovery release is out!

    Hi! I bring you good news, thanks to @Tasssadar finally we can install any Lollipop ROM as secondary ROM, even if it has a block image based OTA, so you'll be able to install official CyanogenMod 12 releases, etc.

    Also the new update of the MultiROM Manager app includes full support for this device ;)

    Download latest recovery: TWRP_multirom-amami_20150121-00.img
    View

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