how to convert database back to NAV5.1

Hello all,

My NAV5.1 database is converted into NAV6.1 not upgraded. I haven`t any backup. Can I use converted objects of NAV6.1 ? How can I to convert it back to NAV5.1?



No way. Older version executables than that which converted the DB will not open anymore this DB.

But that is not a big problem, as it is even recommended to use the latest executables. It is called Technical upgrade - please search the forum for this term, you’ll get tons of threads about it, and what else you need to do after saying “Yes” for DB conversion - it varies from version to version.