Hi,
I just wanted to let everyone know that the firmware and instructions for the HiveAP121 found here:
Also works flawlessly on the HiveAP141. That is to be expected since they are almost the same device but with external antenna's. But since I couldn't find any mention of it working on the 141 anywhere I'd like to put it out there if anyone wonders in the future.
Maybe the page/guide/firmware could be updated so it mentions HiveAP141 support.
If anyone is interested in details, I can provide whatever is needed now that I have access to one running openWRT