"only 2.0.10 and above versions of ESP32 appear"
what do you mean be versions of esp32? Are you talking about the expressif arudino framework?
If so, do you have good reason for needing that exact framework? Compatibility with a library, for example?
if not, I'd advise you to use the newest version available. If using the the arduino IDE, simple serach esp32 under board manager & select the one you want to install (3.10 & 3.11) are available that way.
I couldn't find a copy of 2.0.8, seems like they've hidden it. If you use platformIO ( a much better IDE), you could install it simply by adding "framework = arduino@2.0.8" to your platformIO.ini file.
Platform IO has a learning curve, but does EVERYTHING better than arduinoIDE. If you think you'll do more than just 1 arduino project, its worth the investment.
here is a link to expressif's site on arduino support, both for arduino IDE & platform IO:
https://docs.espressif.com/projects/ard ... lling.html