Searching for a " Shin Megami Tensei IV undub decrypted ROM" typically refers to finding a pre-patched version of the game that uses the original Japanese voice acting with English text. While downloading copyrighted ROMs from the internet is generally considered , you can legally create your own "undub" version if you own the original physical game. How to Create an SMT IV Undub (Legal Method)
You're looking for a review of Shin Megami Tensei IV: Apocalypse (also known as Undub) on the 3DS, as well as information on a decrypted ROM. shin megami tensei iv undub 3ds decrypted rom free
: Be cautious of "free" ROM sites, which often host malware. Official archival sites like the Internet Archive sometimes host patches, but they are still subject to copyright laws. [3DS] Shin Megami Tensei IV Undub patch by Canzah & Slow Searching for a " Shin Megami Tensei IV