FF3 and lineageOS

[taipan]

Hi Alex,
I checked what I did yesterday.
I followed this link:

FP3/FP3+: Complete guide for installing LineageOS

This post is a #wiki, you can edit it by clicking the green pencil icon. Wiki meta discussion here How to: Installing LineageOS on your FP3/FP3+ Since there is no easy, complete, all-in-one guide available, I thought about writing one. Feel free to join this wiki post and optimize it;) 1. ATTENTION WARNING: You’ll loose all your data. So back up everything you want to keep! WARNING: the wiki hasnt been updated since some time and things might have been changed,…

and here is where i ran into problems.
Chapter 4:

1. Now, enter fastboot oem unlock
   This didnt work… I got an error. I searched the community and found something with 8901_unlock or so. Didnt help. I search the internet and it offered another solution. which worked. When I finished and entered what fastboot oem unlock I got the same message as from the other solution. Done.
2. Next, you have to accept the unlocking on your phone.
   Navigate with Volume + / Volume - buttons and press the Power button to proceed with the unlocking.
   I did not get this. I saw some lines, the first in red, the last in red indication the bootloader is unlocked. When I pressed the volume buttons it said: Start, Restore, Reboot, and I had no clue which one to use.
   3.This step will unlock the bootloader and wipe all your data!*
   I had no clue what is wanted here.

5. Installing LineageOS

…

• Boot your FP3 into the bootloader
  which comment? adb or fastboot. I am not a techie. And old, so my memory is poor
• Connect your FP3 to your computer
  I wondered. Shall it be disconnected before this. Is this a must?
• Open Minimal ADB and Fastboot and enter the command fastboot boot RECOVERY-FILENAME.img
  Did that and it failed.
  Obviously because of what happened before in chapter 4.