Wanted to chime in and say I booted the '
TWRP 3.5 for Joyeuse build by
dungphp' from the 'fastboot boot' command and worked great.
So if you don't want to install permanently or to test if its working and future versions or to try different recoveries without actually flashing one.
You can run twrp through fastboot without flashing it, keeping the stock miui or whatever recovery you have installed.
This is my prefered method.
Follow this step in '
platform-tools' if you don't know commands the // are my comments.
Code:
// check if the device is connected
adb devices
// reboots to fastboot as fastbootd can't remotely boot recoveries
adb reboot bootloader
// boots twrp temporary without flashing 'NON DESTRUCTIVE' where the file is recovery.img in the folder
fastboot boot recovery.img
// actually flash twrp 'WHICH WILL OVERWRITE THE INSTALLED RECOVERY' if you need to
fastboot flash recovery.img
This way its non destructive and anything that has a issue you can just reboot as this only loads twrp without it actually being flashed to the phone.
You can test various twrp versions this way without risking your device.
Remember you can always remotely boot TWRP from a PC or Laptop to make backups and to restore the installed system whenever needed, as you do not need to install twrp at all.
@rbarat can you put a note in your first post for this to encourage people to load via the boot command first as a test before actually flashing and risking their recoveries.
As there are a lot of people that don't fully understand things as you can see by the above posts.