Is there already a way to boot to android and back to linux by pressing a button for a long time or something?
A way without a pc and console command?
Thanks
If you have a key board, CTRl alt DEL will do it. There are some apps that will let you fast reboot too.
I would like to know which app does this with the latest Android image. 
Even an app that I can run from my phone and crash the Vero2 will be usefull, as long as the crash forces a reboot and you don’t fix the crash with future updates. 
for me none of these apps are working, cuz all of them need root, and actually android is not rooted 
I think you can download ‘Recovery’ apps etc that let you choose between Reboot, Shutdown, Bootloader, Recovery. But nothing controllable from a phone per se. I believe this is a general limitation of Android.
Which apps? There shouldn’t be many applications requiring root. This is a difficult situation as some users want Android rooted, and some don’t, as some applications will complain if the device is rooted.
We will probably ship an updated image soon with rooted firmware. We could also look at shipping two versions.