DELL T320, Drivers and Firmware

Good afternoon gentlemen, I have a Dell T320 server

Here they told me the links where the drivers and firmware for my server are located. But there is a lot there and so I have questions:

1) What should I download so that I can connect to iDRAC 7 through a browser? All browsers, except Falcon (Linux), when trying to connect, report the old SSL protocol and refuse to connect. With the help of Falcon I manage to pass authentication, but on the next page it also stops working and I cannot connect via iDRAC 7 to the technical support server, from where I can download the necessary drivers and firmware.
I think this is my main problem at this stage, since the server currently only has two 1 TB hard drives and 16 GB of server memory.

2) I tried to insert different video cards into the motherboard, mainly NVIDIA GeForce GT 220 with and without a fan, but the motherboard does not see them? Which firmware should I download?

Thanks in advance for your answers.