How do I get some of new features?

Hi siyamudheen
To update Techone theme:
Step 1: Please go to the http://themeforest.net/download to get the latest theme version ( included TechOne' documentation)
Step 2: Backup your site( Include codes + Database)
Step 3: From the dashboard>>Appearance>>Theme, you need to activate the default template( Ex; Twenty Seventeen theme)
( you can refer this document, it's the same http://test.kutethemes.net/koolshop_doc/#mazanoupdate)
Step 4: Click on the TechOne theme and then click Delete( look down in the right). NOTE: DO NOT delete theTechone-Child
Step 5: Return the dashboard choose Plugins then deactive theTechone Toolkit, Slider Revolution, WPBakery Visual Composer and delete them.
Step 6: Return the Appearance menus choose Theme>>Add New>>choose your latest theme version>>Install
Step 7: Return the Plugins menus>>New>>and choose the techOne Toolkit (Slider Revolution, WPBakery Visual Composer plugins are the same)>>Install>>and activate them.
Please do it and let me know.
Thank you and Have a great day!

Please answer my question, it was not "how to update theme".

find attached screenshot, the version indicates 1.2.7. Is that the latest? if yes, how do I get following features?
Ver 1.2
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Added: List ajax load (Ajax load?)

Ver 1.2.1
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Fixed: Input Display on Check Out page

- About Input Display on Check Out page issue: They fix the Option buttons in the checkout page ( see the attachment screenshot)
These features fixed and included in the latest theme version( we just fixed the coupon codes issues on mobile. Please update to the theme version 1.2.8, it sent to your email). If you have other questions, do not hesitate to contact with me. I will help you.
Thank you and Have a great day!