Slow migration – older theme versions

Hi!

I’m really happy with the theme so far and I’m using it for a few years already.
I have neglected updating the theme for a long time though and I am trying to do it now.

I have a problem with updating:
I’m running raindops theme v 0.994
If I replace that with the current version (1.297), I get a blank screen.

I want to try a slow updating process, so I can adapt to the changes better.
For example from:
0.994 >> 1.000 >> 1.102 and so on…

Where do I find the older versions of the theme (if possible)?
Is there an archive somewhere?

Have a nice day