A tool for merging whatsapp databases
Usage: java -jar merjapp.jar [-debug] [-simulation] -old old.db -new new.db
Please make backups of your databases, as this tool WILL change them. Your output will be the old databases as the entries in the new database will be merged into it.
This tool is released as is and the author takes no responsibility on any data losses. Please use at your own risk!
For more information go to the application thread on XDA developers: http://forum.xda-developers.com/android/apps-games/tool-merjapp-merge-whatsapp-databases-t2896496