If you want to apply the 10.15.7.03 supplemental update, see instructions at this post.
Steps to install Catalina on a Dell Latitude E6410 (BIOS A17, NVidia 3100m)
Wi-Fi connection to an Access Point is delayed when using AppleALC for sound.
You MUST BE LOGGED-IN to download attachments from this forum. CLOVER configuration is specified below the installation steps. EFI and kexts for Catalina are attached to this first post in E6410-Catalina.zip. Versions of the software used in this installation are listed below the installation steps.
The DSDT attached to this first post (in E6410-Catalina.zip) is VERY SPECIFIC to the Nvidia graphics implementation and has not been edited for HD Graphics - there are elements required for HD Graphics that are missing from the attached DSDT and there are DSDT mods that have not been tested with HD Graphics. Important: This Thread is NOT intended to help you install macOS on a Latitude E6410 with Intel HD Graphics (without Nvidia graphics). If you are curious about the evolution of this solution and how sleep/wake was solved, review the Mojave installation thread. The instructions in this first post assume that you are installing Catalina in an APFS container.
This thread for installing Catalina on the Dell Latitude E6410 WITH NVIDIA GRAPHICS (BIOS A17, NVidia 3100m) will help you install a fresh installation of Catalina on your Dell Latitude E6410, it will help you upgrade from 10.15.2 to 10.15.x (if you originally installed Catalina from this thread) and it will also help you upgrade from Mojave 10.14.6 if you have already installed Mojave by following the instructions.