you can update for free, but you have to Download this firmware for the Obi110 http://fw.obihai.com/OBi110-1-3-0-2886.fw
(Yes, I know its for the Obi110 but it will work in the Obi100).
as stated elswhere by yorktown:
If you don't know how to install the firmware:
Dial * * * 1
It will give you the IP Address: 192.168.XXX
.XXX (example 192.168.1.27 )
In your browser, enter the IP Address as the URL.
User Name: admin
On the left side, navigate to SYSTEM MANAGEMENT
Click DEVICE UPDATE
At the top where it says "Firmware Update
Select file to update firmware [BROWSE] ...."
Click BROWSE and add the file. Then click UPLOAD
Once it reboots its done.
i went around and around for 3 days until i ran across this info. it worked for me on an Obi100 that i've had for years. thank you yorktown!!!