There was a network change (not by us) a little while ago that broke the ArduSub download process, which we fixed in 0.0.30. If your Companion version is <0.0.30 then it’s not possible to update ArduSub without opening up the enclosure and connecting the Pixhawk to QGC.
If the Network page (http://192.168.2.2:2770/network) shows that your Companion is connected to the internet:
then the System page (http://192.168.2.2:2770/system) should have the option for you to update Companion:
The Companion update from 0.0.26 is expected to take a while, as discussed here.
If you’d prefer to open the enclosure and flash on new Companion and ArduSub softwares directly that’s also possible (and is a robust fallback if the web interface updating isn’t working for whatever reason).
- For flashing ArduSub onto a Pixhawk you want 4.0.3, and
- for flashing the Companion SD card 0.0.29 is the latest prebuilt version, after which it should be possible to update to 0.0.30 from the web interface once internet is connected - the update from 0.0.29 to 0.0.30 should be quite fast