Problem with updating firmwares on Dell T110

Hi, i've recently got a T110 server (starting a homelab) and before installing an OS i'd like to update the machine's firmwares. Following the instructions found on a pdf on your website, i've downloaded the appropriate .iso file from box.com (1,1gb) and created a bootable usb drive with Rufus. I've booted into it and let it run. Most of the updates failed stating "Inventory collection failed" and also when it's POSTing it says in the upper right corner of the screen "System Services Update Required". What can i do to make sure it's all updated and functional? What did i do wrong? I'd wish i could attach a log file but i can't find anything on the usb drive.

Also, i'm very confused by all the Dell tools like iDRAC, LCC, OMSA, SUU, DSU, etc. Why there are so many tools? Is there a guide for newbies? Thanks in advance.