[LG G2 Mini] myllo.setya:
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Introduction

MultiROM is one-of-a-kind multi-boot mod for LG G2 mini D618. 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 (not for D618)

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.​

Instalation

1.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.

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 - download the ZIP file from second post and flash it in recovery.

Modified recovery - download the Recovery.zip file from second post and flash it in recovery.

Patched kernel - You can use either one of the stock ones in second post or third-party kernels which include the patch, you can see list in the second post. Download the ZIP file and flash it in recovery.​

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.

see this video:

How to install secondary ROM

2. Ubuntu Touch - Not available yet

3. Firefox OS - Not available yet

4. SailfishOS - Not available yet​

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.​

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, 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.​

Changelog

MultiROM v32
=====================
* Minor GUI improvements
* Support for device encryption (with Android-based secondary ROMs only). See
FAQ in this device's XDA thread for more info.
* Bunch of ROM compatibility fixes

MultiROM v31
=====================
* Add support for "multimount" fstab (fixes CM12)
* Support interlaced PNGs (fixes wrongly rendered icons in boot manager, e.g.
the L icon)

MultiROM v30
=====================
* Fix logs generated by the "emergency reboot" screen, they were incomplete

MultiROM v29
=====================
* Implement "autoboot if no key pressed" mode - the boot manager won't show up
unless you hold down a volume down button during boot. Must be enabled in
recovery.
* Android 5.0 preview related tweaks

MultiROM v28
=====================
* You can now swipe between the tabs in the boot manager
* Minor UI adjustments

MultiROM v27a
=====================
* Fix freezes in the boot manager
* Add support for SailfishOS

MultiROM v27
=====================
* Redesign the boot manager GUI. Looks much better now.
* Fix separate radio.img not working on Android L preview ROMs
* Fix issues with unaccessible /sdcard on Android L preview. Do NOT run
restorecon manually on /data/media, ever - it breaks MultiROM!
* Workaround bug which caused franco.Kernel on N5 to break secondary ROM's
boot
* Update Ubuntu Touch init scripts
* Use power+volume down (you have to press power first!) to save screenshots.
They are now PNG images and are saved to /sdcard/Pictures/Screenshots/.

MultiROM v26
=====================
* Fix boot into secondary ROM from the MultiROM Manager app broken in v25

MultiROM v25
=====================
* Add support for the Android L preview

MultiROM v24
=====================
* Add F2FS support
* Show icons in ROM list, configurable via MultiROM Manager app
* Improve compatibility with different ROMs and kernels when booting a ROM
from the Android app

MultiROM v23
=====================
* Fix compatibility with Ubuntu Touch rev 290 and higher. If your Ubuntu
installation won't boot, go to recovery and use "Re-patch init" option in
Advanced -> MultiROM -> List ROMs -> *ubuntu*.

MultiROM v22c
=====================
* Fix graphics corruption with some custom kernels

MultiROM v22b
=====================
* Mount the real /data partition to folder /android/realdata in Ubuntu Touch,
enabling sharing data between Android and Ubuntu Touch. See
http://bit.ly/ut_sharing for more info.

MultiROM v22a
=====================
* Add support for ROMs with DTB only as separate blob in boot.img (AOKP)

MultiROM v22
=====================
* Fix Ubuntu Touch boot taking long time
* Fix Ubuntu Touch freezing on Google logo for some users

MultiROM v21a
=====================
* Add support for testing builds of Ubuntu Touch (see XDA thread, post #323)

MultiROM v21
=====================
* Revert "mount /system in secondary ROMs read-only" - if done so, SuperSU
breaks the boot.

MultiROM v20
=====================
* Support booting ROMs directly from Manager App
* Fix FCs on CyanogenMod-based ROMs
* Fix support for USB drives formatted with NTFS, broken in v17
* Mount /system in secondary ROMs read-only

MultiROM v19
=====================
* Initial version

Recoveries

08.7.2015
=====================
* Update to TWRP 2.8.7

28.3.2015
=====================
* Update to TWRP 2.8.6
* Added "restorecon" option to secondary ROMs (in MultiROM -> List ROMs),
should be used to fix broken SELinux contexts, which can be causing
bootloops of secondary ROMs
* Bunch of ROM compatibility fixes - recovery now uses entirely new way to
inject ZIP installation files, which should be much more robust and reliable
* Big ZIPs (> 450MB) are no longer permanently modified when flashed as
secondary ROMs
* Fix sideloading of big ZIP files (> 450MB) into secondary ROMs

12.2.2015
=====================
* Update to TWRP 2.8.5
* Fix support for ROMs containing a supersu.zip in their installation file
(e.g. AICP)

15.11.2014
=====================
* Support for ZIP files which are using the new 'block_image_update' command
(e.g. SimpleAOSP ROM)

29.10.2014
=====================
* Update to TWRP 2.8.1

21.10.2014
=====================
* Update autoboot settings for MultiROM v29

14.9.2014
=====================
* Update with changes from 2.8.0.1 upstream version: fix a bug that causes
weird graphics glitches and touch issues

11.9.2014
=====================
* Update to TWRP 2.8.0
* Fix adding ROMs from backup to a FAT32 USB drives
* Remove "share kernel with internal?" from "Add ROM" page, there is usually
no reason to use it anymore and it might be confusing to figure out what it
actually does. You can still get the same behavior by clicking "Remove
boot.img" on the List ROMs -> *rom name* page.

12.8.2014 - 1
=====================
* Fix 'Flash ZIP' function for Android ROMs, broken by a typo in previous
version

11.8.2014
=====================
* Remove Ubuntu Touch installation, installing via recovery is deprecated
* Add SailfishOS installation

8.8.2014
=====================
* Show secondary ROM's name in the title bar while executing it's script (e.g.
during OTA update)
* Update Ubuntu Touch updater
* Fix failure to swap ROMs if it contains filenames starting with a dot
* Fix add ROM from a backup producing unbootable ROM with Android L preview
* Add option to remove radio.img from secondary ROMs
* Add config options for MultiROM v27

5.6.2014
=====================
* Update to TWRP 2.7.1
* Hide misleading "Mount: Unable to find partition for path '/data'" message
which appeared during secondary ROM installation, it is not _actually_ an
error.

4.6.2014
=====================
* Fix installation of bigger (>350MB) ZIPs as secondary ROMs

12.5.2014
=====================
* Fix crash during settings loading, causing a bootloop with certain settings

11.5.2014
=====================
* Add F2FS support
* Add tool to switch F2FS<->ext4 to Advanced menu
* Fix problems with backups introduced by TWRP 2.7.0

8.3.2014
=====================
* Update to TWRP 2.7.0
* Remove "save" button from MultiROM settings page, it is saved automatically
now

27.2.2014
=====================
* Support for system-image based (from the Manager app) Ubuntu Touch
installation
* Fix time in recovery
* Some rendering optimizations, resulting in noticeably higher FPS in recovery

4.2.2014
=====================
* Update to support latest Ubuntu Touch testing builds
* Fix date and time in recovery
* Add support for mice connected via USB-OTG
* Fixup scrollbar behaviour in file list

26.1.2014
=====================
* Fix radio in Ubuntu Touch

24.12.2013
=====================
* Fix installing ROMs to USB drive
* Fix ZIP verification
* Support ZIP verification for secondary ROMs

Credits :

Tassadar for the entire multirom

LuK1337 for multirom port

Nikita Pro Android for the kernel

Tested Configuration:

Primary Rom: Stock ROM / CM 11 / CM12 / CM12.1

Sec. Rom: Stock ROM 4.4.2 / CM11 / CM12

Donations (Tasssadar)

I'd be glad if you could spare a few bucks. You can use either PayPal or Bitcoins, my address is 172RccLB2ffSnJyYwjYbUD3Nx4QX3R8Ris

or buy me a coffee

Thanks to all donors, it is much appreciated

XDA:DevDB Information

MultiROM, Tool/Utility for the LG G2 Mini

Contributors

myllo.setya, Nikita Pro Android

Version Information

Status: Stable

Created 2015-04-28

Last Updated 2015-06-18