It has come to our attention that Omega2 modules produced since November 2022 (date codes 2245 and later, MAC addresses starting with 88:1E:59) have an incompatibility with older builds of the v0.3.3 Omega firmware. The incompatibility in the older firmware causes a kernel panic, with the Omega2 failing to complete the boot process.

The devices work out of the box with the firmware that’s flashed during manufacturing. The problem arises when the devices are re-flashed with older builds of the v0.3.3 firmware, or customized firmware that’s based on these older builds.

This incompatibility does not affect any devices produced before November 2022.

Who does this affect?

This affects customers who use Omega2 modules in their products AND build their own firmware based on Onion’s v0.3.3 firmware (and older).

This does NOT affect:

  • Customers that use Omega2 modules with the firmware v0.3.3 b255 and higher
  • Customers that use Omega2 modules with custom firmware based on Onion firmware v0.3.3 b255 and higher
  • Customers that build firmware based on newer vanilla OpenWRT releases
  • Customers that use Onion’s new beta firmware based on OpenWRT 22.03
  • Customers using Omega2 modules with MAC addresses exclusively in the 40:A3:6B range

What needs to be done?

If you fall into the affected group outlined above, our recommended course of action is below:

Update or rebuild your firmware so that it is based on the latest v0.3.4 b257 version of the Onion firmware and uses WiFi Warp Core v1.2.
This latest firmware resolves the incompatibility, ensuring normal device operation.

We’ve added a v0.3.4-b257 tag to the OnionIoT/source repo to make it easy to find the latest version.

When does this need to be done?

We encourage affected customers to upgrade their custom firmware before using Omega2 modules with MAC addresses starting with 88:1E:59 or date codes 2245 and later.

Drop us a line in the Onion Community Forum if you have questions.
We appreciate your continued partnership and remain committed to providing top-notch IoT hardware modules for your products and projects.