The dumps of these games haven't been (made and) released yet, according to http://www.abgx.net/3ds_releases_date.txt
Use 3DS Update Checker from eponymous thread http://gbatemp.net/threads/3ds-update-checker.352412/ to find out which firmware update is embedded in a given .3ds ROM dump.
Hasn't someone reported that both of them have 4.5 firmware partition?