Hello,
I tried to upgrade from 2.8.23 to 2.9.40 and i lost all the vpn configuration and some other stuff. I did a downgrade and i’ve restored my backup successfully.
but i’m still in 2.8.23 and i’d like to upgrade this router.
How can i do ? I’ve read that i need to upgrade first to the latest 2.8. But i can’t find the packages on the net… Is it the good method ?
Thanks.
You will have to re-create a lot of your configuration after upgrading…
Try export a script file and work from there…
Is’nt it possible to download the latest 2.8 somewhere ?
No, all available versions are on download page (2.9 supported release),
http://www.mikrotik.com/download.html
it doesn’t make any difference - if you upgrade to latest 2.8 or directly to latest 2.9.40
Ok. thanks for your answers.
I don’t understand why my old rules don’t migrate correctly.
I have 10 Mikrotiks Routers and they are all in latest versoin with no problem.
It’s the pptp server. when a pptp client arrives, the connection is initiated correctly but the client is disconnected immediatly.
Some one as an idea ?
new OS has completely different syntax for some rules, especially queues and firewall. you should be able to figure out what to change to make them working again.
enable debug logging to see why disconnections happen
is there a document with the syntax changes ?
yes 
http://www.mikrotik.com/testdocs/ros/2.9/
http://www.mikrotik.com/testdocs/ros/2.8/
just see what rules you use (firwall filter or queues) and compare examples.
Here i am in 2.9.40 and i have these errors in log:
After a good pptp connection i have:
pptp ppp error Could not add filter: jumps to buildin chains not allowed (6)
and it disconnects!
Somebody has an idea ?
check your filter rules that have action jump.
i have no more filter rules at all !
send supout.rif to support
ok
jumps to buildin chains not allowed (6)
means that you specified ‘input,forward,output’ chain as destination chain (most likely outgoing-filter/incoming-filter in ppp profile configuration or via RADIUS).