Watchguard Firebox M400/M500

[korenchkin]

@jriofrio this is efi shell,it just needs filesystem...it should pick up the right file...i think...for efi there is no mbr/boot sector...bios should know the name of the file to load(and be set to boot uefi,hopefully default)...i'm not certain about mbr/gpt partition table,windows uefi needs gpt,but here i probably didn't overthink it and it just booted...just try and see (and google for uefi flash boot/uefi shell,if something does not work right)

[jriofrio]

@korenchkin .... Alright, thank you very much for the clarification, it really did help.

I did the flashing and tested it. I restart it by the serial console and the web interface, both worked as was hoping for.
A little reading with your comment about efi it help a lot.

anyway, a quick question if i may. Before the flashing ME91, i was checking the bios and i saw that the image re-flash for the ME was disable, so i enable it, just in case.
Q: should i disable it back?

thanks one more time...

[stephenw10]

Normally you set that and it applies to the following boot only and will automatically go back to disabled.

Out of interest I found I didn't need to set that to update the ME. Moving the jumper was sufficient.