[Sony Xperia L] STRYDER~007:
Introduction

MultiROM is 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.​

Installation

Manual installation

Firstly, there are videos on youtube. If you want, just search for "MultiROM installation" on youtube and watch those, big thanks to all who made them. There is also an awesome article on Linux Journal.

MultiROM has 2 parts you need to install + one optional (deprecated) :

MultiROM (multirom-YYYYMMDD-v33x-taoshan.zip) - download the ZIP file from second post and flash it in recovery.

Modified Recovery (multirom-YYYYMMDD-recovery-taoshan.zip) - download the ZIP file from second post and use a recovery to flash it into the FOTA partition (see TWRP 3 thread for more informations).

DEPRECATED: Patched kernel - You can use those kernels on most Marshmallow and Lollipop based primary ROMs to add kexec boot support.

Be aware that those patchers will be updated when possible after kernel sources updates

Kexec support no longer required thanks to the no-kexec workaround by nkk71.

For convenience reasons, I enabled the workaround by default if kexec is not found.

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.

Recommended values are :

Cache : Keep default value

Data : Minimum 4000

System : 1000 is enough for most installs

​

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.

OPTIONAL: Reflash the kernel patcher to add kexec support

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.

​

Explanation of recovery menus

Main menu

- Add ROM - add ROM to boot

- List ROMs - list installed ROMs and manage them

- Inject boot.img file - When you download for example kernel, which is distrubuted as whole boot.img (eg. franco kernel), you have to use this option on it, otherwise you would lose MultiROM.

- Inject curr. boot sector - Use this option if MultiROM does not show up on boot, for example after kernel installation.

- Settings - well, settings.

Manage ROM

- Rename, delete - I believe these are obvious

- Flash ZIP (only Android ROMs) - flash ZIP to the ROM, for example gapps

- Add/replace boot.img - replaces boot.img used by this ROM, this is more like developer option.

- Re-patch init - this is available only for ubuntu. Use it when ubuntu cannot find root partition, ie. after apt-get upgrade which changed the init script.

​

Source code

MultiROM - https://github.com/STRYDER-007/multirom_xperia (branch multirom-7.1)

Modified TWRP - https://github.com/nkk71/android_bootable_recovery/ (branch android-7.1-mrom)

Device Tree - https://github.com/STRYDER-007/multirom_device_sony_taoshan (branch master)

Kernel w/ kexec-hardboot patch - https://github.com/STRYDER-007/android_kernel_sony_msm8930 (branch multirom)

​

MultiROM available for Taoshan also thanks to :

- Tasssadar

- The XperiaMultiROM team

- The MultiROM HTC team

- @Olivier and @Adrian DC for lot of precious help and guidance in fixing many things

- @nkk71 for no-kexec workaround

- @Agent_fabulous for testing

- My Xperia L for surviving this!

​

XDA:DevDB Information

MultiROM for Xperia L, Tool/Utility for the Sony Xperia L

Contributors

STRYDER~007

Source Code: http://xdaforums.com/google-nexus-5/orig-development/mod-multirom-v24-t2571011

Version Information

Status: Stable

Created 2016-06-13

Last Updated 2016-09-24