1. Android Central Question's Avatar
    Whenever I try to start my phone it says:
    No bootable a/b slot
    Failed to boot Linux, falling back to fastboot
    Fastboot reason: Fall-through from recovery boot mode

    It starts into bootloader, but I cant use any options in there or the error above pops up

    Bootloader IS unlocked, TWRP is installed, this error occurred after I installed Magisk
    06-03-2019 08:25 AM
  2. belodion's Avatar
    Is the phone recognised if you try an ADB command?
    06-03-2019 08:57 AM
  3. Jack G2's Avatar
    Is the phone recognised if you try an ADB command?
    Sometimes it is sometimes it is not. Depends on the command.
    06-03-2019 09:02 AM
  4. Rukbat's Avatar
    fastboot boot boot.img (which you get from downloading the current ROM and unzipping it).

    If that works (it should), get back to the bootloader and

    fastboot flash boot_a patched_boot.img
    fastboot flash boot_b patched_boot.img

    Then

    flashboot boot
    06-03-2019 03:35 PM
  5. Jack G2's Avatar
    My phone is not being detected. Yikes
    06-04-2019 06:26 AM
  6. Seb H's Avatar
    My phone is not being detected. Yikes
    I'm running into the same issue: "No bootable A/B slot" and phone isn't detected by my device or any others I connect it to. Did you ever resolve this?
    Thanks.
    08-04-2019 03:44 PM
  7. Javier P's Avatar
    I'm running into the same issue: "No bootable A/B slot" and phone isn't detected by my device or any others I connect it to. Did you ever resolve this?
    Thanks.
    Welcome to the forums. What did you try before getting this error? Have you tried to root your phone or flash a custom ROM?
    08-04-2019 06:12 PM
  8. Seb H's Avatar
    No, this phone is stock from the manufacturer. I've tried selecting "reload bootloader" and factory reset, but it gives the same error screen.
    When plugging the device into other laptops, it isn't detectable, so I can't flash it.
    08-05-2019 03:17 AM

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