I am a noob to xda and this is my first post, but have been using custom ROMs for the past 3 years. Using the recovery partition was fairly easy, but A/B is driving me nuts.
I have tried to follow these instructions to the T, unfortunately my MiA3 is refusing to behave. I have the latest platform tools, but I am simply unable to change my partition to b. getvar current-slot works and tells me I am on partition 'a'.
I have tried various combination of fastboot commands such as:
fastboot set_active b
fastboot --set-active=b (when I use double hyphens, the text grays out in PowerShell)
I almost always get this error, and the commands list pops up.
usage: fastboot [ <option> ] <command>
(or) in case of the last command I get this error "unknown option -- set_active=b"
I also tried the method of erasing the boot partition and flashing twrp to the boot partition. I am unable to boot into recovery. I press Vol + and then execute 'fastboot reboot', but it always boots back into fastboot mode after the android One logo. Am I supposed to wait till the Android One logo flashes, before I execute the command in PowerShell? I waited for up to 20 seconds and nothing happened.
I don't know what I am doing wrong. I have been trying to get this to work for the last four hours and am really sleepy - hope I have not missed something elementary in the process. Let me know if you need screenshots (I can't find an attachment button to upload files from my PC, do I have to host the images somewhere to be able to post it? - sorry I have never used XDA before)
Try putting .\ before like this
And if that's not it make sure you typed it correctly it's