The GV fiasco has prompted many posts which cover the process of downloading the OBi1x0 2886 firmware to a local computer, logging in to the ATA's local WEB GUI and uploading the new firmware.
But if the OBi in question is at a remote location, that process is not available. Are you SOL?
No. If remote provisioning has not been disabled, the updated firmware can be loaded using the Obitalk Portal Expert Mode.
Fill in the fields as shown in the screenshot. At the time of writing this, the full URL of the lastest OBi1x0 firmware is
http://fw.obihai.com/OBi110-1-3-0-2886.fwScroll down and click 'Submit', wait a few minutes and when you next look at the Device Status you should see the updated firmware version.
Then, if you wish, put the method back to 'Disabled', clear the URL box and submit again.
I've done this on an OBi100 on the other side of the world from me. No reason the same method wouldn't work on an OBi2xx if it became necessary.