[Milhouse]

Now openelec dev update addon don't work and since that

Why doesn't it work? Do you get an error? Anything in the log?

I downloaded new tar build, transferred to Update folder on raspberry pi but during reboot nothing happens.

Nothing happens at all? Do you see a message during the boot "Found new .tar archive. extracting...", or just a regular boot version number? If OpenELEC doesn't find the new tar archive then you must be naming the tar file incorrectly (no extension?) or copying it to the wrong location.

Another option for you to upgrade/downgrade would be to ssh in to your Pi, run

Code:

./devupdate -s  "Milhouse Builds"

then enter 0 at the prompt. Reboot when the download completes.