Upgrade BIOS & Firmware on Power edge R420 from command line

Hi,

You can update the firmware and BIOS from the CLI. http://www.dell.com/support/home/us/en/19/product-support/product/poweredge-r420/drivers?os=rh60

Dell Update Package Instructions for Linux DUP:
Download
1. Click the "Download Now" link to download the file.
2. When the File Download window appears, click "Save" to save the file to your hard drive.
Installation
1. Read over the release information presented by executing the "./[model]_BIOS_LX_[revision].BIN --version" command from the shell.
2. Download and install any prerequisites identified in the above step before proceeding.
3. Install any necessary Embedded Systems Management firmware prior to this BIOS update.
4. Run the update by executing "./[model]_BIOS_LX_[version].BIN" from the shell.
5. Follow the remaining prompts to perform the update.

Thanks Josh,

Is there any order in upgrading idrac, bios, LCC and  firmware?

Usually it is iDRAC, firmware and then BIOS, but there is not an order that they are required to go in. 

Dear Josh,

I have tried to update firmware through command line, however it failed. All I could see in log is "update failed. Is there any reason why I am unable  to  execute firmware from OS command line?

Were there any errors in the update logs? Which firmware update were you doing?