Install an update in joomla preserving our modifications

We need to update our TPjob component and modules preserving our data and some modifications that we made using another freelancer. The new freelancer must compare the versions then copy and past the last changes. TPjobs is a component from Templateplazza and the update changelog is Changelog in version 1.1 Changed Files Com TPJobs * com_ [login to view URL] * [login to view URL] * component/[login to view URL] * component/[login to view URL] * component/[login to view URL] * component/[login to view URL] (new file) * component/[login to view URL] (new file) * component/language/en-GB/[login to view URL] * component/images/[login to view URL] (new file) * admin/[login to view URL] * admin/[login to view URL] * admin/[login to view URL] * admin/[login to view URL] * admin/[login to view URL] * admin/tables/[login to view URL] * admin/tables/[login to view URL] (new file) * admin/tables/[login to view URL] (new file) * admin/sql/[login to view URL] * admin/languange/en-GB/[login to view URL] Mod TPJobCategory (v 1.1) * [login to view URL] * [login to view URL] * tmpl/[login to view URL] * images/[login to view URL] Mod LatesTPJobs (v 1.0.1) * [login to view URL] * tmpl/[login to view URL] Resume: Comp TPJobs * Fixed blind SQL Injection Issue * Added Create Custom Fields funtion for both of TPJobs user profile and Jobs detail (New) * Added RSS function for Jobs Category, Location, Industry, Position (New) * Added Community Builder (CB plugin for registration and profile) and Jomsocial Support (Jomsocial app) (New) * Added new free mode so you don't have to create package for free package (New) * No more hardcoded languanges * Fixed a lot of minor bugs + improvements Mod TPJobsCategory * Added RSSButton Mod TPJobsSearch, ModTPjobLates, Jobs Plazza template * Added avatar support for CB and Jomsocial Max Bid: $50 (Others will be ignored)