Android Boot Manager:Installation Tutorial

Important Information

Depending on the manufacturer of your mobile phone, rooting your devise will lead to the termination of your warranty.

Android 9 installed on your phone (the team is working on Android 10 implementation)
SD card for installing further ROMs
- at least class 10 for good experience
- at least 8 GB for each ROM (more than 20 GB are recommended)

Install a custom recovery on your phone (TWRP is recommended) [Device specific: On the Moto G5, don't use the stock ROM.]
Install Magisk to get root rights. You can download Magisk from github releases.
Boot into TWRP, go to ‘wipe’ > ‘advanced’, choose ‘wipe cache’, unmark all other options and choose ‘change data system’ to ext2.
Download the most-recent build of the ABM App from github releases. Copy the apk file on your smartphone (eg. via SD card, USB or Bluetooth)
Install the App by clicking on the apk file in the Files app. You may be asked to allow installations from non-secure sources...

Open the app and allow root access (with Magisk).
Check that the app shows ‘Root: OK’. A restart of the app might be required for this.