Step 1: Put your Vector into recovery mode by putting him on the charger, and holding his back button for ~15 seconds or until the 2 back lights turn dark blue.
Step 2: Head on over to this site. (alternative site if that one is down)
Step 3: On this site, you will see options for stacks. Select the Utility stack.
Step 4: Pair with Vector. Make sure to keep "auto flow setup" checked.
Step 5: Connect to WiFi, and then select Unlock-Prod.ota.
Step 6: Let Vector reboot, and flash the new images. (The proccess can take over 10 minutes so be patient)
Congratulations. You have unlocked your Vector, and can now install developer firmware.
Once Vector is on either the anki.com/dev screen or the u.p-2.xyz screen, head on over to this site (alternative website if that one is down), select the Custom Firmware stack, and then select your firmware of choice. Enjoy!
Step 1: Download this ssh key.
Step 2: Find Vector's IP. You can do this by accessing the CCIS menu once he is connected to WiFi.
Step 3: SSH in! You can do this by running:
ssh -i path/to/ssh_root_key root@yourvectorip
Running into a pubkey error while trying to SSH into Vector? Try sshing with this command:
ssh -o PubkeyAcceptedAlgorithms=+ssh-rsa -o HostKeyAlgorithms=+ssh-rsa -i path/to/ssh_root_key root@yourvectorip