Rated 5 out of 5 stars

I can't select google for the about:homepage search, selecting it will makes FF use default search engine, while bing or yahoo is working fine. Everything other than that worked well.

This review is for a previous version of the add-on (1.0.5.1-signed). 

That was by design since the page defaults to Google, but you're right. I should have allowed selecting Google because then it won't change with a different search engine. I'll fix.

Rated 5 out of 5 stars

Can you make this addon change the search engine in the about:homepage as well?
UPDATE: in 1.0.5 every search engine works except for google. Select google for the homepage search just makes it use default search engine, while I can select bing or yahoo. This is weird.

This review is for a previous version of the add-on (1.0). 

Yes, I'll work on that.

This is fixed in 1.0.4.