I can't seem to get it working. With "Validate RAM Data" enabled, I get "FailValidate." When I disable that, reading RAM gives me all slots full with "Item #000" in each slot.
I've tried launching the game with the L button held down: hold L button, launch game, select profile, keep holding L, release L when theme music starts playing.
I don't have any cheats enabled (Tesla background service is disabled). I get a similar result when using ACNHPoker.
Firmware: 10.1.0
Game version: 1.4.2
Sys-bot 1.5 with \atmosphere\contents\430000000000000B\flags\boot2.flag