901 B
Installation issues
If OEM-unlock code doesn't work
If you get the message "Password verification failed" on your phone after entering the unlock code. It might be the problem, that you are using an old Android version. So update your Android and try it again.
For additional information see here: https://forum.fairphone.com/t/bootloader-unlocking-code-for-fairphone-3-not-working/66685/6
If "5. Install LinegaeOS recovery image" does not work
You an try fastboot flash boot_a <image_filename.img> or fastboot flash boot_b <image_filename.img>. The boot_a is the name of our recovery boot partition. If your FP was rooted several times this my result in a non factory partition name ...
With fastboot getvar current-slot you can find out whether your suffix should be _a or _b. Find more possible names at https://forum.fairphone.com/t/find-out-boot-partitions-name/77171
