Cannot Flash If Memory Manager (Eg. HIMEM) Pr

Hi,

I don’t have a floppy disk in my PC, so to upgrade my BIOS I’m trying to boot MSDOS Millenium with a USB stick, that also contains the flash application and the new rom. I do it, but when I execute phlash16 application I get the message:

Cannot flash if Memory Manager (eg. HIMEM) pr

NOTE: There is no config.sys, autoexec.bat either HIMEM.sys files in the usb.