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Downloads for the current stable release (SmartServer IoT 3.2 Update 2) are available here:

Descriptions and direct links for the current and previous releases are available in the following sections.

SmartServer IoT 3.2 Update 2

Release Date: August 26, 2021


  • SmartServer IoT Software: 3.25.014
  • IzoT Net Export Utility: 1.30.335
  • Platform
    • Ubuntu Linux: 20.04
    • Ubuntu kernel: 5.4
    • Node.js: 14
    • Java VM: 11
    • Python: 3.8
    • PHP: 8.0
    • NginX: 1.18.0



  • The following problems have been fixed:
    • Extracting data logs using a web socket sometimes failed after 24 hours. (LUM-8275)
    • Exporting an IzoT Net Server or LNS network with the IzoT Net Export utility sometimes failed if any IP-852 routers were defined in the network that were not available online at the time of the export. (AP-8429)
    • Exporting an IzoT Net Server or LNS network with the IzoT Net Export utility failed for any network variables with changeable types if the type had been changed.  The SmartServer CMS now creates a unique device type for each unique combination of network variable types on a device with changeable type network variables. (AP-8030)
    • Creating LON dynamic network variables on the SmartServer from IzoT CT failed if the dynamic network variables used a user-defined type. (AP-8370)


  • You can update an installed SmartServer running an earlier release of the SmartServer software to the 3.2 Update 2 release.  However, you cannot go back without clearing all devices out of the SmartServer.  If you attempt to load an earlier version of the SmartServer software on a SmartServer with 3.2 Update 2 and provisioned devices, the earlier software is not compatible with the 3.2 Update 2 database and will fail to run.  Always backup your SmartServer prior to updating it to the 3.2 Update 2 software.  If you have to go back to an earlier release, either restore one of your backups with the earlier release, or re-image your SmartServer with a clean version of the earlier release as described in Updating with the SmartServer Configuration Page.  Links to prior releases are available on this page. (LUM-8271)
  • The SmartServer may fail to communicate with LON devices when using LON independent management mode (IMM) and changing a SmartServer network interface after importing an IzoT Net Server or LNS database. If you lose communication with LON devices in IMM after changing a network interface, backup your SmartServer and then reset your databases as described in Resetting the SmartServer to Factory Defaults. (AP-8563)
  • If your SmartServer has any BACnet devices with a discovered device interface (XIF) and you export your device types using the Settings button or the Devices Widget Export action, your discovered BACnet XIF will not be included in the export.  You can get a copy of the discovered XIF in the /var/apollo/data/bacnetrouter/res directory on your SmartServer. (LUM-8265)
  • You cannot include leading zeros in the device unique ID (UID) and the BACnet object instance numbers that you specify in the BACnet XIF (BAC) file.  The CMS will accept the definitions, but some operations will fail due to the leading zeros. (AP-8018)
  • You cannot update IAP output datapoints (which are the same as BACnet input datapoints) from calendar events.  You can update IAP input datapoints (which are the same as BACnet output datapoints).  This includes writes to BACnet inputs such as BACnet AI and BI objects. (LUM-7839)
  • In some cases, when you create a connection between two LON datapoints, the devices involved in the connection may be deprovisioned.  You can recover by reprovisioning the devices after they become deprovisioned. (AP-8360)
  • In some cases, the CMS displays stale data after you make a change.  If a datapoint value, context, preset, or other value is not displayed as you expect, refresh your browser window (Ctrl-F5 in many browsers).  If you are using the CMS Datapoint Browser, you can click the Refresh button in the upper right corner of the widget. (LUM-7145, AP-7677)
  • The SmartServer requires free space on the SD card for normal operation and requires logged data to be less than 8 GB.  For optimal performance, keep logged data below 100 MB.  The SmartServer includes a 32 GB SD card.  You can run out of free space on the SD card if you create many backups or retain too much data in the data log, and performance will degrade if the storage for logged data exceeds 100 MB, and will degrade significantly if the storage for logged data exceeds 8 GB.  The Datapoint Properties widget displays an estimate of how much SD card space will be required for logged data based on your data log configuration.  You can use this value to manage the space required for data logs and keep the size below 100 MB for best performance, or keep the size below 8 GB for acceptable performance.  If required, you can free up space on the SD card by deleting backups.  To delete backups from the SD card, see Managing the SmartServer SD Card. (LUM-7271)
  • If you are using an IOX I/O Expansion Module, always plug the IOX into a USB port on the SmartServer and do not plug it into a USB hub.

SmartServer IoT 3.2 Update 1