Problem with SET variables and IOS reinstallation

[s.steffensen]

I have a student who have done something to 2 of our 3650 switches.

The ios was gone and we did a sw reinstallation from TFTP.
That failed with this message: "Emergency Install failed - unable to set BOOT var
Restarting system."

Tried USB to flash install. Same result.
Tried via XModem. Same thing.

HW problem? Not likely because it is 2 identical units at the sam etime.

Did though observe this strange output from the set command in ROMMON mode (se attached txt file). It looks like garbage.

So my 1000$ question is:

Where is the SET parameter physical stored? How do I completely reformat this storage area?
Anyone with other ideas how I get this switch back in business?

[Leo Laohoo]

Baud rate?

[s.steffensen · Accepted solution]

As you may see the command is in clear text and that in between is garbage, so the baudrate is 9600 and is working perfectly until show the boot variables.