This isn't a simple "plug-and-play" software update. There are two ways to get LineageOS on a Passport:
from Zinwa Technologies is targeted for a . This kit is expected to be a full mainboard swap, replacing the original internals with modern Android hardware (potentially a Helio G99-class chip with 12GB of RAM) while retaining the original Passport chassis and keyboard. Blackberry Passport Lineage Os
: The conversion is primarily confirmed for the original Passport (AT&T, Black, White, Red) and the Silver Edition . This isn't a simple "plug-and-play" software update