Thank you for your question! Your understanding of the canon update process is correct - players can canon update at any point via the canister download, or go home and come back with 2000 ACP.
There is no option for having a character return home with a round trip other than through the ACP process. Making it simple for a character to go home and come back would invalidate the premise of the game (specifically, that it is difficult to have the portal point back to the same world more than once) and that difficulty is signified by the 2000 point cost of a round trip.
no subject
There is no option for having a character return home with a round trip other than through the ACP process. Making it simple for a character to go home and come back would invalidate the premise of the game (specifically, that it is difficult to have the portal point back to the same world more than once) and that difficulty is signified by the 2000 point cost of a round trip.
I'm sorry for any disappointment this may cause.