Looking at koreader's github, there are a lot of changes, but not that much nightlies. Last is pretty old.
I saw that OTA versions also use just zysnc method (or just didn't found right link?, this is the one I found out:
http://vislab.bjmu.edu.cn/apps/koreader/ota/ ), so it looks I'll need to use wifi on my reader, which is something I'd like to avoid.
Is there a way to get kobo version from changes applied to source code, without having linux environment, compiling, etc?
Or can there be a more nightlies, at least one each month?
For example, I just saw that my suggestion about live clock is implemented and I'd like to have that very much.