How to change Android system boot slot form A to B

Stuck FastBoot Mode fastboot change slot 8GB MEMORY Built-in Wifi Built-in Camera with NumPad Flat Keyboard VGA SLOT HDMI SLOT SD CARD SLOT DVD DRIVE USBLAN PORT fastboot set active slot First you need the actual fastboot, 3 Then the correct command is: fastboot --set-active=a

fastboot change slot slot; don't forget to disable AutoReboot Start flashing the recovery 6 To change 7 Allow system modifications by