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I have followed all the steps of this guy but flashing twrp-3.2.3-0-cedric.img failed.

When I open my Ubuntu console and type fastboot flash recovery /home/username/folder/twrp-3.2.3-0-cedric.img, it says:

(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:recovery: not found
target reported max download size of 536870912 bytes
sending 'recovery' (14572 KB)...
OKAY [  0.463s]
writing 'recovery'...
(bootloader) Image not signed or corrupt
OKAY [  0.502s]
finished. total time: 0.965s

What did I do wrong? Did I use the wrong version? Looking at this similar problem did not help me. sudo fastboot flash recovery /home/username/folder/twrp-3.2.3-0-cedric.img does not help either.

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The locked bootloader doesn’t let unsigned images to be flashed. So, the Image not signed... error indicates that there is a possibility of the bootloader not being unlocked.

  • Make sure the bootloader is unlocked.
  • Make sure you are using right version of TWRP for your device.
  • Try fastboot boot /path/to/twrp.img instead of flashing. If it boots, flash the recovery image from within the recovery. Afterwards, any zip should be successfully flashed (custom ROM, GApps, mods etc.).
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    fastboot boot /path/to/twrp.img boot and path shoud have space in between
    – bh_earth0
    Jul 16, 2019 at 9:26

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