KerOS firmware v5.12.2 (March 2026)

Changes from v5.12.2

Fix upgrade when files to keep are too big
Fix upgrade from web interface when upgrade file is bigger than 100MB
Fix SNR values returned by lora tools and lorad in SF12
Kconf is able to read/write ofono configuration file if same section is present twice
Fix lorad init script return value if basicstation is not running
Fix GSM connection when there is no 3G and operator needs more than just APN to connect in LTE

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

Compatible with Wirnet™ i-series gateways (Wirnet iBTS, Wirnet iFemtoCell, Wirnet iStation, Wirnet iFemtoCell-evolution, Wirnet iZeptoCell Ethernet, Wirnet iZeptoCell Cellular).

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)

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

KerOS IPK 5.12.2:keros_5.12.2_klkgw-signed.ipk md5: a4eda5ad23edf84bea485b9903088666
Liveburner IPK 5.12.2: liveburner_5.12.2_klkgw-signed.ipk md5: 9c700114199ce071d20e22943ab2bfae
Liveburner IPK 4.3.3-2: liveburner_4.3.3-2_klkgw-signed.ipk md5: 12CFEFB8D4630A34AA90C77E6C73A193
Custom liveburner IPK 5.12.2: custom-liveburner_5.12.2_klkgw-signed.ipk md5: a45ef64d843d8fe64786625055ff2700
Update liveburner package: update_liveburner_package-v5.12.0.tar.gz md5: 46588b0de902679e048f171eafe02002
64-bit toolchain: poky-glibc-x86_64-keros-toolchain-klkgw-5.12.2.sh md5: b9cc8c6e1da489d45585f8885e4ff634