Im working on an PE2900 with a BIOS v 2.6.1.  I've been running Debian Linux 7.2 Wheezy to run a printer RIP server software.  We are in the process of upgrading the RIP software and require Debian Linux 9.6 Stretch.  The problem I have is that the Debian 9.6 version doesn't seem to want to install and I was told that the BIOS may not allow it.

I checked the Service Tag, it list all the past updates for the computer.  With the BIOS, last update date of 17 Dec. 2013 v2.6.1 is the latest in the list.  

I found this https://www.dell.com/community/PowerEdge-Hardware-General/How-to-Update-the-BIOS-in-a-PowerEdge-2900/td-p/4270325 and provided this link to version 2.7.0, https://www.dell.com/support/home/us/en/04/drivers/driversdetails?driverid=5vwcm but the last update date on it is 11 Dec. 2013 and the version is 2.7.0; older date than the BIOS v2.6.1.

Anyone think that 2.7.0 is the solution for my install problem?  The exact message during the Linux OS install is that it the isolinux.bin is missing or corrupted.  But we have used this same installation media on a Dell PowerEdge T440 without any problem.

I know it's an older computer but it still runs well for our use.  

TIA, Deo