Summary:
This release delivers updates for KALLO testing configurations, including enabling voice call testing for appropriate devices, improving P25 test reliability and structure, and allowing SIM selection per task.
Revision E20 Devices on previous firmware will stop reporting metrics until updated to v8.3.5 as of 2025-12-04.
Compatibility & Upgrade Notice
Applies to: Revision E20 devices (serials beginning with KA-E20).
Delivery method: Automatic OTA update when the device is connected to mobile coverage (or a valid PoE Ethernet backhaul).
Important: Devices with revisions earlier than E20 will not receive v8.3.5 and should remain on the prior firmware.
Recommendation: Ensure device has stable power, remains connected, and is not interrupted during update.
What’s New
New Features
Voice Call Testing — Devices equipped with our latest modem firmware can now be configured to perform voice call tests, returning metrics through the "cell_voice_calls" field through the API.
P25 Testing Changes — To improve test sensitivity, P25 tests are now performed as tasks in-line with cellular testing and require channel frequency input.
Task SIM Selection — Users may now optionally define which SIM to use per task.
Enhancements
Modem OTA Optimisations — Various backend improvements to increase modem update reliability.
Bug Fixes & Stability Improvements
Fixed an issue where throughput tasks would stop after an OTA modem upgrade.
Fixed a variety of small bugs.
Known Issues & Limitations
Devices on versions earlier than Revision E20 are not supported for this firmware and will remain on the prior release.
Some carrier networks may still restrict or block passive RF testing; please verify local network compatibility before relying on this feature.
How to Update & Roll-out Schedule
The update is being rolled out in phases starting 11 November 2025. Most devices should complete the update within 24–48 hours once connected.
If your device remains on the previous version after 72 hours while connected and powered, please contact [email protected] for assistance.
All updates timeout 5 days after being scheduled. If a device is not powered on within 5 days of 11 November 2025, please contact [email protected] to reschedule an update.
Additional Resources
Full detailed release notes PDF → KALLO v8.3.5 Firmware Release Notes.pdf