Finally updated all the firmware using LiveCD - very straight forward and a lot better than doing the monkey-business with Windows VM etc. Just for the record (if anyone else lands here searching the same thing): Booting LiveCD by using the Linux-Based Diagnostic Tools (Dell 12G-14G servers) option. then open up the terminal and run this command I will do an inventory and do the required updates, by following the on-screen instruction. You may have to wait for 15 mins to run that command as PackageKit holds onto yum and needs to wait until it finishes. I also had to use  --ignore-signature as it couldn't find the GPG key where it supposed to be. In the end, my system was updated with all the latest firmware.   Thanks all for helping!! -S
Hi there, I picked up a used R220 of eBay couple of days ago and wanted to update the BIOS, other firmware etc. before putting it in action. So I started with PER220_BOOTABLE_20.04.00.126 <ADMIN NOTE: Broken link has been removed from this post by Dell> to update whatever available but I cannot boot into it off an USB stick. First I used [Balena] Etcher to create the bootable USB but it keeps telling me it doesn't look like a bootable image as it cannot find a partition-table information. I went ahead in spite of that but then got stuck at F1 prompt, saying cannot find a bootable media. I also tried to with dd to write iso on the stick bot ended up with the very same result.  Does anyone know what I'm missing or doing wrong? I'd really appreciate some help! -San
PER220 - Bootable ISO, PER220, 20.04.00 fails to boot