FIELD SERVICE BULLETIN
PMP450 Upgrade Recommended
|Download the PDF version||Application||Global|
|Effective Date||August 24, 2020|
|BULLETIN TYPE||SEVERITY RECOMMENDATION|
|Warranty Service||High – Perform immediately|
|X||Informational||X||Medium – Perform at next scheduled maintenance|
|Customer Specific||Low – Perform when system exhibits symptoms|
SUBJECT: PMP450 Subscriber Modules Lose Factory Calibration Data.
MODEL / SYSTEM AFFECTED: All PMP450 Subscriber Modules running firmware
versions older than 188.8.131.52
Customers are reporting a symptom on the PMP450 subscribers GUI -> Home -> General Status – “Radio not calibrated” and the SM stops operating.
In all cases, the “Radio not calibrated” symptoms occurred on SMs being managed by cnMaestro and running firmware versions older than 184.108.40.206. These units are susceptible to factory calibration data being corrupted due to repeated configuration pushes from cnMaestro.
CURRENT STATUS OF INVESTIGATION: The problem has been determined to be caused by a software defect and it has been corrected in the official PMP450x software release of 220.127.116.11 or later.
RESOLUTION: If you have PMP450 SM running software older than 18.104.22.168, they should be upgraded to 22.214.171.124 or beyond to avoid this failure.
Upgrade path: 13.4.1 -> 14.1.1 -> 15.1.x -> 15.2.1 -> 126.96.36.199 or 16.2.x(latest software release at time of FSB issue is16.2.2) If you have a PMP450 device that is exhibiting the “Radio not calibrated” message, please open a support ticket with Cambium Technical Support to RMA the unit.
If you encounter an issue please open a support ticket with the Cambium Support team at the following URL: https://support.cambiumnetworks.com