[SOLVED] Download DexterOS 1.1.1

Can someone help me find where to download DexterOS 1.1.1
I need the old version to use our Ultrasonic sensors. I would use a distance sensor instead, but I have older boards that only have 1 I2C port and I’m using the line follower on that port.

We’re looking. If any one here has it, please come forward.

Thank you. The new line follower would be great, but I also still need the OS 1.1.1 so I can teach my lesson with the supplies I have this year.
Thank you!!

DexterOS 1.1.1 has been found.