Originally Posted by dhaddow
Sent from my SM-G920F using XDA Free mobile app
Has anyone come across a rooting method that works on the Acer B3-A10.
I bought a Iconia One 10 B3-A20B to start developing but it is merely impossible without root access.
Bad luck: at the moment everything failed.
I tried to boot into bootloader with adb reboot bootloader. Before this step I erased my google user account on the android device and the pin security access (since I had the information from the internet that Lollipop 5.1 is preventing bootloader mode if one or both of these things are active). Also I enabled 2 more options in developers mode: USB-Debugging and the option enable unblock bootloader.
BUT: it happened not to work.
adb itself is working properly (on linux in my case). It shows me the device, I made a backup and both worked. As soon as I enter the command adb reboot bootloader the device switches of, shows a screen with a battery symbol loading (because it is connected to usb) but nothing more. Also no reaction of fastboot devices (nothing).
I managed also to find out to reboot in recovery mode by pressing the power button and volume up button for about 5 secondes. Also here appears a menu point saying reboot in bootloader, but also this is not working.
To reboot in a full check mode press the power button and the volume down for more than 5 seconds. A check is now starting with guess chinese letters on screen (with no guarantee that this ends good, so leave it).
Has anybody experience with Lollipop 5.1 and/or B3-A20 and to circumvent this barrier to boot in bootloader?