Downgrading

I am building some new CPE using RB133c’s with 3.2 installed.
My AP is running 2.9.5 so I uploaded 2.9.5 via FTP to downgrade the CPE (2.9.5 on the existing CPE in the field is working well).
Both Winbox and terminal show them running on 3.2 after reboot, but the log shows 2.9.5 installed.
Now I don’t really know what version they are running.
Any help on this?

to downgrade you must run command “/system package downgrade” after uploading 2.9 packages.
/system package print detail will show you information on package version and build date.