Update: :Extension: Could not open https://update.hotjoomlatemplates.com/sparky_

Upgrading from 4.2.9
I have installed all extensions listed in the pre check, some twice or more
I have proceeded with the upgrade multiple times and failed, used the back button to resolve
   

Try uninstallation of pkg_search. It should be uninstalled on Joomla 4 anyway because it's replaced with Smart Search. Also, I am not sure if RSForm blocks the upgrade, but I am 100% sure that our Sparky Framework and Swipe Carousel are not blocking it. We have just upgraded 100+ template demos to Joomla 4.3.0.

Regards,
Milos

Success!!, Thanks for your assistance, I uninstalled RS Forms, upgraded to J4.3.0, re-installedRSForms.
Strange part is I have upgraded about 5 of my sites already with RSForms without any issues, all hot templates so far have been a breeze, Thanks again.