Changing Picross rom's serial number from EU to USA

Discussion in '3DS - ROM Hacking, Translations and Utilities' started by nine0nine, Jan 13, 2015.

  1. nine0nine

    nine0nine Advanced Member

    Jan 21, 2006
    Currently, E1 / E2 and E3 are available ripped from the Europe eshop, where as E4 and E5 are from the USA shop.

    I want to change the serial number the Euro releases of the Picross games to what I expect the USA releases are, in an attempt to unlock the extra puzzles in Picross E4 and E5 which are triggered when you boot the game and it sees you have already bought the previous games.

    The extra games are unlocked in E3 by running E2, but nothing is unlocked in E4/5, so I can only assume its working via the games serial number ID.

    So, I know its possible from reading the early .cia making tutorials, but to be honest they are a little over my head. Could someone give me a few pointers here on the easiest way to do this using the more recent rom tools?

    Looking at the current releases below, it may just be a case of changing the E to a P.

    1355 PICROSS e Jupiter Corporation [​IMG] en,fr,de,it,es BigBlueBox 1024 CTR-JEXP
    1335 PICROSS e2 Jupiter Corporation [​IMG] en,fr,de,it,es BigBlueBox 1024 CTR-JP2P
    1328 PICROSS e3 Jupiter Corporation [​IMG] en,fr,de,it,es BigBlueBox 1024 CTR-JETP
    1317 PICROSS e5 Jupiter Corporation [​IMG] en,fr,es BigBlueBox 1024 CTR-KPQE
    1207 Picross e4 Jupiter Corporation [​IMG] en XPA 1024 CTR-JEPE
    mmn likes this.