Conversion of crypt12 files to crypt9 file format

You can certainly convert .crypt12 WhatsApp backup files to the original .crypt file using WhatsApp Tri-Crypt / Omni-Crypt app, but you cannot convert it to any of the previously used version, including crypt9. Once you have the .crypt file, you can extract the messages with other tools.

Open CRYPT12 file    Open CRYPT9 file

Related software

WhatCrypt for Android icon

WhatCrypt for Android

WhatsApp crypt tool for Android

WhatsApp Tri-Crypt (Omni-Crypt) icon

WhatsApp Tri-Crypt (Omni-Crypt)

Android app used to decrypt and convert CRYPT files