Teldio Service Advisory: GPS Week Number Rollover (GWNR)

Restoring GPS location reporting in TruFleet for legacy MOTOTRBO radios

Issued: June 2026 | Ref: TELDIO-SA-2026-01 | Applies to: TruFleet / MOTOTRBO GPS

Summary

A GPS Week Number Rollover (GWNR) event is affecting GPS reporting on older MOTOTRBO radios across the industry. On affected systems, these radios appear in Teldio TruFleet to have stopped reporting, even though they are still transmitting. Teldio has a workaround available today that restores correct, current-dated location reporting, and Motorola is releasing a permanent firmware fix expected in July 2026. This advisory explains how to recognize the issue and the options for resolving it.

Are your radios affected?

The most common sign is simple: affected radios appear to have gone silent in Teldio TruFleet. Before assuming a unit is offline or has a hardware fault, it is worth checking for the pattern below.

What you see in TruFleet | What is actually happening
Vehicles or radios stop updating and drop off the live map, with no recent GPS activity — as though the units were switched off or out of coverage. | The radios are still transmitting. Their GPS is reporting a date roughly 19 years and 8 months (1,024 weeks) in the past, so TruFleet treats each update as outdated and does not display it. The position itself is still accurate — only the timestamp is wrong.

You may be experiencing GWNR if all of the following apply:

Only location stopped. Voice and other data still work normally — it is specifically GPS / location reporting that went quiet.

It began in mid-April 2026. The units were reporting normally until on or around the weekend of 11–12 April 2026. A fleet may drop off gradually as individual radios reach the rollover point rather than all at once.

Newer radios are unaffected. Other, newer radios on the same system continue to report without issue.

*For the full list of affected currently shipping and discontinued products, refer to Appendix A.

What is causing it

GPS satellites broadcast the date using a week-number counter that resets every 1,024 weeks — roughly every 19.6 years. The legacy NL5500 GPS chipset used in older, non-E / non-refresh MOTOTRBO radios does not account for this reset, so after the rollover it reports a date about 19.6 years in the past. Motorola has confirmed this behaviour in Technical Notification MTN-0098-26. It is a limitation of the radio’s GPS hardware — not a fault in TruFleet, the Teldio server, or your network.

The Teldio workaround (available now)

Teldio has a workaround that restores correct, current-dated reporting so affected units reappear and track normally in TruFleet. The approach depends on how each radio reports its location:

Standard (Regular GPS) reporting. The TruFleet server automatically corrects the date — applying the current date while preserving the reported time — so these units are restored once identified, with no radio re-programming required.

Sprite location (indoor / outdoor tracking). A server-side date correction alone is not enough here, because Sprite location-history (contrail) data is tied to the original timestamp. Teldio has developed updated Sprite firmware that corrects the timestamp while preserving contrail history. Applying it requires re-programming all affected radios with the new firmware, which Teldio will help you plan and carry out.

Motorola’s permanent fix (expected July 2026)

Motorola is releasing a firmware update that resolves the issue at the radio level. According to Technical Notification MTN-0098-26:

Currently shipping models. Addressed in the M2026.01 firmware release, expected July 2026.

Discontinued / out-of-support models. This covers most of the legacy radios affected by this issue. A fix (S2021.01) is being made available to apply through your radio dealer. Depending on a radio’s current software version, additional upgrade steps or licensing may apply.

Because the applicable models and timing vary, refer to MTN-0098-26 or your radio dealer to confirm what applies to your specific radios. We recommend applying Motorola’s firmware fix once it is available for your model, as the permanent resolution. Until then — and for any radios that remain on legacy hardware — the Teldio workaround keeps your fleet visible and reporting correctly.

To view the Motorola Solutions Technical Notification MTN-0098-26, please visit the Motorola portal.

How Teldio can help

If units have stopped reporting in TruFleet and the criteria above match your situation, contact Teldio Support. We will:

Confirm whether GWNR is the cause on your system.

Plan and execute the Sprite firmware update for affected radios, with minimal disruption.

Help you coordinate the transition to Motorola’s permanent firmware fix when it becomes available.

Contact Teldio Support
Email: support@teldio.com
Phone: +1-855-743-1333
Knowledge Base: support.teldio.com

The workaround is delivered through Teldio Support. If you are not currently covered by a support agreement, contact us and we will walk you through the available options.

Appendix A

Affected Currently Shipping Products — NAG

Product Name | Regional Super Tanapa | Sales Model No.
XPR 7550 IS | PMUD3254ABCNAA | AAH56JDN9PA3AN
XPR 7550 IS | PMUD3254BBCNAA | AAH56JDN9PA3AN
XPR 7550 IS | PMUE4174ABCNAA | AAH56QDN9PA3AN
XPR 7550 IS | PMUE4174BBCNAA | AAH56QDN9PA3AN

Affected Discontinued / Out of Support Products — NAG

Product Name | Regional Super Tanapa | Sales Model No.
XPR 5350 | PMUD2566ABCNAA | AAM28JNC9KA1AN
XPR 5350 | PMUD2567ABCNAA | AAM28JQC9KA1AN
XPR 5350 | PMUE3645ABCNAA | AAM28QNC9KA1AN
XPR 5350 | PMUE3649ABCNAA | AAM28QPC9KA1AN
XPR 5350 | PMUE4140ABCNAA | AAM28TRC9KA1AN
XPR 5380 | PMUF1651ABCNAA | AAM28UMC9KA1AN
XPR 5550 | PMUD2566ABDNAA | AAM28JNN9KA1AN
XPR 5550 | PMUD2567ABDNAA | AAM28JQN9KA1AN
XPR 5550 | PMUE3645ABDNAA | AAM28QNN9KA1AN
XPR 5550 | PMUE3649ABDNAA | AAM28QPN9KA1AN
XPR 5550 | PMUE4140ABDNAA | AAM28TRN9KA1AN
XPR 5580 | PMUF1651ABDNAA | AAM28UMN9KA1AN
XPR 7350 | PMUD2906ABANAA | AAH56JDC9KA1AN
XPR 7350 | PMUE3681ABANAA | AAH56RDC9KA1AN
XPR 7380 | PMUF1615ABANAA | AAH56UCC9KB1AN
XPR 7550 | PMUD2904ABCNAA | AAH56JDN9KA1AN
XPR 7550 | PMUE3675ABCNAA | AAH56RDN9KA1AN
XPR 7580 | PMUF1614ABCNAA | AAH56UCN9KB1AN

Note: The tables above reflect the NAG region only. For the full list of affected products across all regions, refer to Appendix A (currently shipping) and Appendix B (discontinued) of MTN-0098-26.