Yes, the new Logger function can also be used with all NanoLockits that were sold before the release of the Logger.
Since firmware version v6.30 the logging function is integral part of the NanoLockit firmware and usable on all generations of Nanos down to the first unit built. Just make sure to update your Nano to the latest version via the LockitToolbox and you are good to go.
You can use the LockitToolbox to extract the log file from the Nano. Additionally you need the Premiere panel to import the logs into your project.
All the required software can be found on our download page: https://ambient.de/en/downloads/