Can I run this module along with jquery update module?

[ugintl]

I have jquery update module. I am using default drupal version for admin pages and 1.7 for the site. I wanted to use bootstrap and it requires 1.9. After some search I found jqmulti module. I downloaded library 1.9.0. Extracted library and enabled the module. When I go to config page of jqmulti, it shows jquery 1.8.2.ajax_xhr. I have 2 questions.

1. Is it ok to do this?

2. I downloaded jquery 1.9 from github, but it is showing 1.8.2. Why?