Update 1.6.1 to 1.7

[tnfsmith]

I am currently running on 1.6.1 and now I want to update to 1.7.
Is it possible unzip new source to the old and done?
How I overwrite existed 1.6.1 with 1.7 without any lost data?

yes git pull

[iiiiik06]

I have tried to overwrite directly, but encountered a bug, such as having two selection boxes appearing in high-resolution repair.