Installing drivers for stereo HAT fails.

1.Which seller did you purchase the product(s) from?
uctronics
2.The Model number of the product(s) you have purchased?
https://www.arducam.com/docs/cameras-for-raspberry-pi/synchronized-stereo-camera-hat/camarry-1mp2-stereoscopic-camera-hat/
3.Which Platform are you using the product(s) on?
Raspberry Pi Buster
4.Which instruction are you following?
https://www.arducam.com/docs/cameras-for-raspberry-pi/synchronized-stereo-camera-hat/camarry-1mp2-stereoscopic-camera-hat/
5.Has your product ever worked properly?
hardware has worked on another system.
6.What problems are you experiencing?
Following the instructions at https://www.arducam.com/docs/cameras-for-raspberry-pi/synchronized-stereo-camera-hat/camarry-1mp2-stereoscopic-camera-hat/

Fresh install of Raspberry Pi OS from official site.

Step 3.
> ./install_driver.sh
Error
install: cannot stat ‘./bin/5.10.17-v7l+/arducam.ko’: No such file or directory.
install: cannot stat ‘./bin/5.10.17-v7l+/arducam.dtbo’: No such file or directory.
According to the instructions this type of error will occur if the OS in not an official release - but I’ve just made a clean install from the official Pi OS.

 

 
7.What attempts at troubleshooting have you already made?

8.How would you like us to help you?
I think you might need to update your drivers or provide a link to a download of Raspberry Pi OS that is compatible with your drivers