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Upgrade Your Unison Network Time Server
Free software upgrades

We provide upgrades and enhancements to our products at this site for no charge.  The software available on this page is for the Unison Network Time Server.


The latest binary image files:

Linux/NTP Subsystem
What is the number of your current software?  You need to know this number in order to get the correct binary image for upgrading the Linux/NTP Subsystem of your Unison.

To get the software number type command: "cntpversion" for Unison CDMA or "gntpversion" for Unison GPS.
You will see the software number displayed like this:
   Unison CDMA 6010-004x-000
   or
   Unison GPS 6010-004x-000

Click here if x=2 (software number is 6010-0042-000).

Click here if x=4 (software number is 6010-0044-000).

Receiver Subsystem (GPS or CDMA)
Current revision level is v5.11.
Click here to download Receiver Subsystem 6010-0020-000 v5.11.


Upgrade Instructions
For complete instructions, please refer to "Appendix B - Upgrading the Firmware" of your User Manual.  If you want to download the latest manual click here for the Unison (GPS) User Manual and here for the Unison (CDMA) User Manual.

If you have any problems with the upgrade please contact customer support by email or phone: 1-877-749-3878.

History of Software Changes for Linux/NTP Subsystem
(Software Numbers 6010-0042-000 and 6010-0044-000)
Version
Changes
5.70 Patches applied to correct Shellshock vulnerabilities.  Please see Field Service Bulletin FSB140926-02.
RECOMMENDATION: Please upgrade unless you have secured the network port on your Time Server per the instructions in the Bulletin.

NOTE 1:  If you are upgrading and the current version in your unit is 5.50 or less, then please read this first.
NOTE 2:  IPv6 users - If you want the IPv6-capable kernel then click here to download.  For information on IPv6 capabilities read these release notes.
5.67 Minor bugs fixed in the PTP option.
RECOMMENDATION: No need to upgrade unless you have the PTP Option.
5.64 1. Fixed bug where sometimes, at first power-up after being shipped from factory, the NTP daemon would take a longer time than normal to indicate lock status.
2. Fixed bug in HTTP interface where it reports NTP Stratum 16 when the actual Stratum is any level greater than 2.
3. Fixed bug introduced at version 5.60 where the ntp daemon continues to serve Stratum 1 time after receiver subsystem goes unlocked for an extended period.
RECOMMENDATION: No need to upgrade unless one of these items is important to you.
5.63 Fixed minor bug - erroneous SNMP traps when NTP is flooded with packets.
RECOMMENDATION: No need to upgrade unless this is important to you.
5.62 1. PTPv2 Option: Removed PTP "Port State = Listen" which could prevent the clock from becoming "Port State = Master".
2. Fixed polling fault that may occur when the unit is powered up the very first time only.
RECOMMENDATION: Upgrade if one of the above items is important to you.
5.61 1. PTP Option: Fixed mishandling of packet sequence numbers when packets are dropped.
2. Fixed bug where password is displayed when upgrading firmware using the Web Interface.
3. Fixed bug that prevents you from upgrading firmware using the Web Interface and the "Upgrade From Local File" option.  Because of this flaw in your current version you must upgrade using the Web Interface and the "Upgrade From FTP Server" option, or by using the command line interface.
4. Fixed bug introduced with change to NTP distribution 4.2.6p3 where ntpd would terminate if user did not configure network settings.
RECOMMENDATION: Upgrade if you have the PTP Option or use the Web Interface.
5.60 1. Updated NTP distribution version to 4.2.6p3 which solves the vulnerability below (item #5) and also improves timing jitter performance.
2. Added version 2 for PTP/IEEE-1588.  This only pertains to those who have purchased the PTP Option.  For information on PTP version 2 see Appendix H in the latest User Manual (click here for GPS and here for CDMA).
3. Fixed domain name bug for domains with more than one '.' in them.
4. Fixed rare Secure Shell permissions bug.
5. Workaround for ntpq/ntpdc remote query vulnerability.  Did this even though the updated NTP distribution should solve the problem.
RECOMMENDATION: Upgrade if one of the above items is important to you.
5.50 1. Added capability for PTP/IEEE-1588 Option that allows setting of multicast time-to-live (ttl) variable.
2. Fixed a bug related to erroneous SNMP FaultStatus2 traps.
3. Fixed a bug in the "gpsrefpos" command which inhibited showing reference position in "unknown" and "dynamic" modes (GPS model only).
4. Added Web Interface (HTTPS) for monitoring status of all functions and for upgrading software.  This new capability is only for units with Software Number 6010-0044-000.  The Web Interface is disabled for units with Software Number 6010-0042-000 (because these are older units and the required hardware is not available).
RECOMMENDATION: Upgrade if one of the above items is important to you.
5.11 Fixed a bug related to the gntpuser or cntpuser login.  If you are having trouble logging in to your unit then upgrading your software will not correct the problem.  Please see this Field Service Bulletin.
RECOMMENDATION: No need to upgrade.
5.10 New option added to the product line: Precision Time Protocol (PTP/IEEE-1588).
RECOMMENDATION: No need to upgrade.
5.00 Changes not relevant to the Unison.
RECOMMENDATION: No need to upgrade.
4.00 1. Added capability for CDMA model to operate in India.
2. Added additional format selections to the Serial Time Output Option.
3. Changed TFOM value for GPS model to be in the range of 9-3 (was 9-4).  Note: TFOM is usually irrelevant for time server customers.
4. Added CRC checking on the time information going from the Receiver Subsystem to the NTP Subsystem.  This will further bulletproof the timekeeping ability of the product and prevent any possible time jumps in the rare case (seen only once) of a hardware glitch on the circuit board.
RECOMMENDATION: No need to upgrade.
3.02 1. To enhance SSH security, the default was changed from accepting versions 1 and 2 protocol connections to only accepting version 2 protocol connection.  Version 1 is considered insecure.
2. Fixed a bug wherein the unit continued to serve time for too long after loss-of-lock to synchronization signal (GPS/CDMA).
RECOMMENDATION: Please upgrade.
3.01 Added 0.1 meter resolution capability to the console "setgpsrefpos" script for GPS products.
RECOMMENDATION: No need to upgrade.
3.00 1. Added ability to set optional Serial Time Output format via console port command.
2. Added ability to mask off certain alarms - the Antenna Fault in GPS products and the Signal Loss Fault in both GPS and CDMA products.  If you are operating your time server as a Stratum II Server then you may want to mask off these alarms.
3. Added more selections for the optional Programmable TTL Output.
4. Fixed a bug related to unprivileged user in cntpstat/gntpstat reporting.
RECOMMENDATION: Upgrade if you care about one of the items listed above.
2.63 Added capability to discipline new oscillator type.  Irrelevant for previously shipped products.
RECOMMENDATION: No need to upgrade.
2.62 Fixed a bug when entering positive time zone offsets via console port command "timemodeconfig".
RECOMMENDATION: Upgrade if you are in a positive time zone (east of Greenwich Mean Time).
2.61 Added capability for options in the Unison.  Irrelevant for previously shipped products.
RECOMMENDATION: No need to upgrade.
2.60 Major upgrade with updated versions of all applications, utilities and shared libraries typically installed in an embedded Linux-based system.  Please click here for IMPORTANT information.
RECOMMENDATION: Please upgrade.

NOTE: This software release is IPv6-capable.  IPv6 is in the experimental stage but some of our customers want it now.  In order to enable IPv6 operation you must perform a second upgrade operation to replace your IPV4-only kernel.  If you want IPv6 operation then:
1. Click here for IMPORTANT information, AND...
2. Click here to download the IPv6-capable Linux kernel.
2.05 Added capability to discipline new oscillator type.  Irrelevant for previously shipped products.
RECOMMENDATION: No need to upgrade.
2.04 Changes not relevant to the Unison.
RECOMMENDATION: No need to upgrade.
2.03 Fixed a bug in NTP that continued to report Stratum 1 with TFOM=9.  However, the unit correctly refused to reply to NTP client requests, so this problem was only seen in reports.
RECOMMENDATION: No need to upgrade.
2.02 Changes not relevant to the Unison.
RECOMMENDATION: No need to upgrade.
2.01 Changes not relevant to the Unison.
RECOMMENDATION: No need to upgrade.
2.00 This release was an integration of Time Server and Time & Frequency products into the same firmware image with automatic boot time configuration of the model and receiver type.
RECOMMENDATION: Please upgrade.


History of Software Changes for Receiver Subsystem (GPS or CDMA)
(Software Number 6010-0020-000)
Version
Changes
5.11
Changes include:
1.  Improved spoofing & error protection on data received from GPS.
2.  Corrected bug in GPS Subsystem, where leap second does not occur properly unless the unit is locked to a GPS signal at UTC midnight.  (Does not apply to CDMA-Synchronized Unison.)
RECOMMENDATION: GPS users please upgrade.  If the Linux Subsystem in your Unison is prior to version 5.00, you must also upgrade the Linux Subsystem.
5.10
Changes include:
1.  Corrected week rollover problem caused by GPS receiver from 3rd-party vendor.  Problem began at UTC midnight on Feb 14, 2016.  After upgrading to v5.10, this product should not be affected by another GPS week rollover until the year 2035.  For details, read this Field Service Bulletin.
2.  Added error checking on UTC offset parameters received from GPS receiver.
RECOMMENDATION: GPS users please upgrade.
5.09
Corrected TFOM changing too quickly for some GPS antenna installations.  TFOM would quickly change from 3 to 4 and back again, which caused unwanted SNMP trap notifications.  (This behavior will continue to be appropriate for some GPS window-mount installations.)
RECOMMENDATION: GPS users upgrade if you have experienced this problem.
5.08
Changes not relevant to the Unison.
RECOMMENDATION: No need to upgrade.
5.07
Added new CDMA frequencies for operation in Korea and Hong Kong.
RECOMMENDATION: CDMA users in Korea please upgrade.
5.06
Changes not relevant to the Unison.
RECOMMENDATION: No need to upgrade.
5.05
Changes not relevant to the Unison.
RECOMMENDATION: No need to upgrade.
5.04
1. Improved CDMA receiver operation in noisy/multipath environments.
2. Corrected bug that wore out FLASH memory chips on GPS units operating for long periods of time without an antenna - such as during Stratum 2 operation.  See this Field Service Bulletin.
RECOMMENDATION: GPS users please upgrade.
5.03
Corrected bug introduced in version 5.00 (GPS only).
RECOMMENDATION: GPS users please upgrade.
5.02
Improved IRIG-B time code generation. 
RECOMMENDATION: No need to upgrade unless your unit has the IRIG-B option and the time code reader you are using is having trouble reading the IRIG.  (Rare problem - seen only once.)
5.01
1. Most changes not relevant to the Unison.
2. Added capability for CDMA model to operate in Sri Lanka.
RECOMMENDATION: No need to upgrade.
5.00
1. Most changes not relevant to the Unison.
2. Corrected rare bug in GPS leap second processing.
RECOMMENDATION: GPS users upgrade before next leap second occurrence.
4.00
1. Added capability for CDMA model to operate in India.
2. Added additional format selections to the Serial Time Output Option.
3. Changed TFOM value for GPS model to be in the range of 9-3 (was 9-4).  Note: TFOM is usually irrelevant for time server customers.
4. Corrected bug in the IRIGB-120/IEEE1344 output.
5. Added CRC checking on the time information going from the Receiver Subsystem to the NTP Subsystem.  This will further bulletproof the timekeeping ability of the product and prevent any possible time jumps in the rare case (seen only once) of a hardware glitch on the circuit board.
RECOMMENDATION: Upgrade if you are using the optional IRIGB-120/IEEE1344 output.
3.03
Added NMEA0183 format to the Serial Time Output option.
RECOMMENDATION: No need to upgrade.
3.02
Change not relevant to the Unison.
RECOMMENDATION: No need to upgrade.
3.01
Added software to work with new version of hardware circuit board.  Irrelevant for previously shipped products.
RECOMMENDATION: No need to upgrade.
3.00
No change.  Version bumped to maintain synchronization with NTP Subsystem version.
RECOMMENDATION: No need to upgrade.
2.13
Added capability to discipline new oscillator type.  Irrelevant for previously shipped products.
RECOMMENDATION: No need to upgrade.
2.12
Test routine added for factory manufacturing.  Irrelevant for customer.
RECOMMENDATION: No need to upgrade.
2.11
Added new string format selections for optional Serial Time Output.
RECOMMENDATION: No need to upgrade.
2.10
Test routine added for factory manufacturing.  Irrelevant for customer.
RECOMMENDATION: No need to upgrade.
2.09
Changed the optional time code format selection list.  Irrelevant for most Unison users unless you have the timecode output option.
RECOMMENDATION: Upgrade if you have the timecode output option.
2.08
Changes not relevant to the Unison.
RECOMMENDATION: No need to upgrade.
2.07
Corrected extremely rare bug for GPS units that occurred only in very high interference environments.
RECOMMENDATION: GPS users upgrade if your Unison is having trouble staying locked.
2.06
Added capability to discipline new oscillator type.  Irrelevant for previously shipped products.
RECOMMENDATION: No need to upgrade.
2.05
Added capability to discipline new oscillator type.  Irrelevant for previously shipped products.
RECOMMENDATION: No need to upgrade.
2.04
Changes not relevant to the Unison.
RECOMMENDATION: No need to upgrade.
2.03
Added capability to discipline new oscillator type.  Irrelevant for previously shipped products.
RECOMMENDATION: No need to upgrade.
2.02
Improved error handling for GPS receiver.
RECOMMENDATION: GPS users please upgrade.
2.01
Changes not relevant to the Unison.
RECOMMENDATION: No need to upgrade.
2.00
Change in communication between the Receiver Subsystem and the NTP Subsystem.
RECOMMENDATION: Please upgrade.
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