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wiki:firmware:release_5.12
Table of Contents
KerOS firmware v5.12.0 (November 2025)
Changes from v5.11.0
Release corrections
- Lighten some unnecessary logs which were in verbose mode
- Prevent Basic Station and lorad from restarting each other in loop
Evolutions
- Fix various security vulnerabilities
- CVE-2024-32384
- CVE-2024-39148
- CVE-2024-32388
- Remove LNS credentials from debug logs
- Set temperature limit to 95°C on iBTS before cooldown
- Lower MTU for cellular communications down to 1420
- Extend Network Monitoring to handle new unstabilities experienced on the field
Restrictions
- IPSec is not yet supported
- Some issues with the Wi-Fi interface (instabilities, no fallback…) on Wirnet iFemtoCell
- When upgrading from KerOS firmware 4.x, all trustzone secrets are lost
- When upgrading from KerOS FW 4.3.3, a hardware reset is necessary for FW 5.x burner to correctly detect USB
- Update status for an update from KerOS FW 5.1.x, FW 5.2.x or FW 5.3.x is in error, but the update is working fine
- No more support of GSM dongles (please contact Kerlink if you plan to use one)
- When iZepto-E is powered by a computer, it cannot benefit from the connection of a gateway in router mode
- The activation/deactivation of the GSM from the local web interface takes some time to execute, so previous activation status remains displayed for a while. A page refresh after a delay of 15-20s after the action shows the right status
- TAI clock offset can not be set on iStation with NEO-M9N. Class B does not work.
Firmware
Compatibility
- Compatible with Wirnet™ i-series gateways (Wirnet iBTS, Wirnet iFemtoCell, Wirnet iStation, Wirnet iFemtoCell-evolution, Wirnet iZeptoCell Ethernet, Wirnet iZeptoCell Cellular).
Software
- Compatible with Wirnet™ i-series gateways secured with Kerlink Production fuses or without any fuses flashed.
- Regular update (
keros.ipk) is incompatible with firmware older than v5.x
- To upgrade the system from KerOS version 4.3.3 to KerOS version 5.x the use of a liveburner is MANDATORY. Two possibilities are available:
- Upgrade with a custom liveburner. It allows to keep some elements like gateway configuration. To use a custom liveburner, please refer to the dedicated page: Major version upgrade with a custom liveburner.
- Upgrade with a regular liveburner (erasing the whole partition to reinstall the firmware)
Delivery
The firmware is released in two formats: KerOS and Liveburner.
KerOS : Update the Firmware
To update the firmware from v5.x, the regular update procedure can be used.
See system upgrade page.
Liveburner : Reset the Firmware of the product
- Update stock version with FW 5.12.0.
- Reset the default password on your gateway.
- Erase the whole partition to reinstall the firmware.
Download
If you are using SSH keys, you must complete the following step before running the upgrade to make sure your keys are preserved.
Run this command:
echo "/home/root/.ssh" > /etc/sysupgrade.d/ssh.conf
This ensures that your SSH keys are retained during the upgrade process.
- KerOS IPK 5.12.0:keros_5.12.0_klkgw-signed.ipk md5:
0f890bd1dde1d43e8ea1b2e1961257ec - Liveburner IPK 5.12.0: liveburner_5.12.0_klkgw-signed.ipk md5:
ef534a01d5eb4ad44533d557ef98a00a - Liveburner IPK 4.3.3-2: liveburner_4.3.3-2_klkgw-signed.ipk md5:
12CFEFB8D4630A34AA90C77E6C73A193 - Custom liveburner IPK 5.12.0: custom-liveburner_5.12.0_klkgw-signed.ipk md5:
d425f32b3d92f8fff4eb762a92c66a85 - Update liveburner package: update_liveburner_package-v5.12.0.tar.gz md5:
46588b0de902679e048f171eafe02002 - 64-bit toolchain: poky-glibc-x86_64-keros-toolchain-klkgw-5.12.0.sh md5:
dfeb4c04b2a3855241a8f17c2ecfe0df - Lorad 2.5.2 package: lorad-hotfix_2.5.2_klkgw.ipk; md5: 112e54f4740f2aa614d578c936783a00
wiki/firmware/release_5.12.txt · Last modified: 2026/02/23 08:52 by edr
