update from version 5 to 9

Can anyone help me how to do this upgrade smoothly as we are using dolibarr since two years now.

Backup your Database first!

  1. Disable all custom modules.
  2. Follow the guide here: https://wiki.dolibarr.org/index.php/Installation_-_Upgrade#Upgrade_Dolibarr

I can see this is little bit complicatedā€¦ and I am not sure if I can go back to the same status in case I am not able to do the upgradeā€¦ is their a way to copy the existing setup to other location so I can try it on the copy and keep the original setup untouched until I am sure I can do it.

You must not consider doing an upgrade any other way!
It is absolute madness to even think of upgrading a production site without having first done trial runs on a development server.

The process is detailed here

It would be helpful to get wiki editing permission and correct anything that is out of date for the benefit of others.

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