if it later than 2010 - 2013 i think the Nanocom will flash all ecus.I have one with the defender and disco 3 unlocked and it will flash all ECU s and im sure if the unlock codes are entered in it will do the L322
https://www.nanocom-diagnostics.com/product/ncom46-for-l322-range-rover-2010-2013-kit